Pcs Key Guide 6k276j

DVM DOCTORS PRESENTS

A KEY GUIDE FOR

PCS

(Provincial Civil Service) Held By

Punjab Public Service Commission (PPSC)

& ALL OTHER INSTITUTIONAL COMPREHENSIVE EXAMS Compiled & Presented by:

MUHAMMAD SAJJAD HUSSAIN DVM (UAF)

Sole Distributor:

UNIVERSITY PHOTOSTAT

Liaquat Hall, University of Agriculture, Faisalabad

Introductory Edition

A KEY GUIDE FOR

PCS (Provincial Civil Service) & All other Institutional Comprehensive Exams For Veterinary Graduates

Compiled & Presented by:

MUHAMMAD SAJJAD HUSSAIN Student of DVM (Final Year) Faculty of Veterinary Science University of Agriculture, Faisalabad For your and Suggestions: Email: [email protected] Cell: +92 322 6272278 Website: www.dvmdocs.webs.com For Free Veterinary eBooks Visit: www.dvmdocs.tk

To Get SoftCopy of PCS-Key Guide : 0322-6272278 "Your PC is Your Library Now" Check out a Series Launched by DVM DOCTORS Veterinary eBooks Collection (55 Important eBooks, Manuals) Animal Science eBooks Collection (60 Important eBooks, Manuals) To Get List of Books: Send a request mail on above ID

Sole Distributor and Publisher:

UNIVERSITY PHOTOSTAT SHOP

Liaquat Hall, University of Agriculture, Faisalabad (Hafiz Zaheer Ahmad: 03016071073

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

DEDICATED TO The Veterinarians for their Sense of Dedication and Commitment towards the Dumb Animals

3

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

VETERINARY SCIENCE THROUGH AGES      

First written record of veterinary medicine from ancient Egypt was provided by Kahum Papyrus (1900 BC). First mention of Rabies was reported in Eshuna code of 2300 B.C. Ashoka (269-232 B.C.) made compulsory provision of charitable animal hospitals. First veterinary school at Lyon in in 1761 (). In 1776, second veterinary school at Alfort near Paris. Royal charter (1844) recognized the Veterinary Art as a profession.

Historic Milestones/Discoveries                       

Louis Pasteur - coined term vaccine; Fowl cholera vaccine, Rabbies vaccine, Anthrax vaccine, and concept of attenuation. Paul Ehrlich - Antibody production, Humoral theory, Acid fast staining, Father of chemotherapy. Edward Jenner – Small pox vaccination Waksman – Streptomycin discovery Bruce – Malta fever Loeffer and Shutz – Glander Moore – Fowl typhoid Nicolaier – Tetanus Ricketts – Rocky spotted mountain fever Bordet – Complement discovery Loffer – Swine erysipelas A. Flemming – First antibiotics as Penicillin J. Lister – Aseptic surgery, Carbolic acid R. Bucchim – Father of Pharmacology M.J.B. Orfla – Father of Toxicology Otto-lewi – Neurotransmitter discovery O.W. Holmes – Coined term Anaesthesia Rudolphi – Father of Parasitology Virchow – Father of Cellular Pathology Kohler & Milstein – Hybridoma (Monoclonal antibodies) technique E. Porter – Structure of antibodies Landsteiner – Blood Group Celsus – Four cardinal signs of inflammation

COMMON PHYSIOLOGICAL VALUES OF VARIOUS DOMESTICATED LIVESTOCK Particulars

Cattle

Buffalo

Sheep

Goat

Horse

Rectal Temperature (F )

o

101.5

101.0

103.0

103.0

100.5

Normal Pulse Rate/min

50-70

48-65

70-80

70-80

30-40

Normal Resp. Rate/min

20-30

20-28

20-30

20-30

10-16

Age at First Service (mo) 15-18

24-27

8-12

8-12

16-18

Gestation Period (days)

304

150

150

340

283

A KEY GUIDE FOR

Particulars

PCS

& OTHER COMPREHENSIVE EXAMS

Dog

Cat

Camel

Fowl

Rectal Temperature (F )

101-102

101.0

99.5

107.0

Normal Pulse Rate/min

70-130

110-130

30-50

120-160

Normal Resp. Rate/min

15-30

20-30

10-12

15-50

Age at First Service (mo) 6-12

6-15

--

--

Gestation Period (days)

56

370

21 (hatch)

o

63

SCIENTIFIC NAMES OF ANIMALS Common Name Alpaca Ass Buffalo Camel Cat Cattle Dog Goat Guanaco Horse Llama Mithun Pig Rabbit Reindeer Sheep Vicuna Yalk

Scientific Name Llama pacos Equus asinus Bubalus bubalis Camelus dromedarianus (Single hump) Camelus bacterianus (Double hump) Felis domesticus Bos indicus / Bos taurus Canisfamilaris Capra hircus Lama guanicoe Equus caballus Llama glama Bos gaurus Sus scrofa Oryctolagus cuniculus Rangifer tarandus Ovis aries Vicugna vicugna Bos grunniens

SCIENTIFIC NAMES OF BIRDS Common Name Chicken Duck Geese Golden eagle Guinea fowl Muscovy Ostrich Pea fowl (peacock) Pigeon Pheasants Quail 5

Scientific Name Gallus domesticus Anas platyrhynchos Anser anser Aquila chrysactes Numida meleagris Cainna maschata Struthio camelus Pavo cristatus Columba livia Phasians colchrices Coturnix spp. Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Red horned owl Screech owl Swan Turkey

Bubo bubo Tyto albo Cygnus spp. Meleagris gallopovo

COMMON AND COLLOQUIAL USED FOR DIFFERENT CONDITIONS/DISEASES Sr.

Colloquial Term

1.

Equivalent English Term --

2. 3.

Hydropsy --

4.

--

5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28.

Uterine torsion Prolapse Debility Canine distemper in dog Surra in camel Strangles Glanders Diarrhea Bovine Ephemeral Fever Drench Pregnant Non-pregnant Cow heifer Yearling cow bull Female cow calf Male cow calf Female buffalo calf Male buffalo calf Exotic Early lactation Edema -Pyometra Docile Halter

Explanation (if any) A non specific condition characterized by decrease in appetite, halitosis in some cases, slight depression, decrease in production. It is perhaps due to presence of noctious agents in blood and organs. -To push air into the vagina for letdown of milk Wheat bran, bread crums, oil cakes, or gram hulls etc with wheat straw is given to animal when there is shortage of green fodder. ----Trypanosomiasis in camel ----------------Cow/buffalo near to end of lactation ----

A KEY GUIDE FOR 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 51. 52. 53. 54. 55. 56.

PCS

& OTHER COMPREHENSIVE EXAMS

Muzzle -Maize fodder -Three teater Animal having three teats Two teater Animal having two teats Foal -Black buffalo with blue eyes -Black buffalo with black eyes -Tumor on third eyelid Worms/Parasite --Lesions at the teat opening -Panj Kalyan + Blue eyes Leather halter -Constipation Animal is unable to defecate Red water -FMD Foot and Mouth Disease Abortion -Abomasal displacement -Actinobacillosis -Actinomycosis -Alopecia -Anemia -Anoestrus -Anthrax -Arthritis -Aural hematoma -Bed sore -Skipping of one milking to show that a cow/buffalo is producing more milk that the actual should on a plan of regular evening and morning milk.

WATER-BORN DISEASES 1. Amoebiasis 3. Black Quarter 5. Borreliosis 7. Brucellosis 9. Cholera 11. Fasciolosis 13. Hog cholera 15. Influenza 17. Johne's disease 19. Leptospirosis 21. Parasitic gastroenteritis 23. Pasteurellosis 25. Schistosomiasis 27. Trachoma 29. Vibrio cholera 7

2. Anthrax 4. Bordetellosis 6. Bovine Contagious Abortion 8. Compylobacteriosis 10. E.coli Infection 12. Giardiasis 14. Infectious canine distemper 16. Jaundice 18. Kidney worm infection 20. Parasitic bronchitis 22. Parvovirus infection 24. Salmonellosis 26. Swine erysipelas 28. Tuberculosis 30. Viral hepatitis Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

MILK-BORN DISEASES 1. Anthrax 3. Diphtheria 5. Foot and Mouth Disease 7. Mastitis 9. Paratyphoid fever 11. Septic sore throat 13. Tuberculosis 15. Undulant fever

2. Cholera 4. Dysentery 6. Gastro-enteritis 8. Milk sickness 10. Scarlet fever 12. Small pox 14. Typhoid fever

AIR-BORN DISEASES 1. Air pollution syndrome 3. Aspergillosis 5. Cancer 7. Carbon monoxide poisoning 9. CP (Con. Caprine Pleu. Pneum) 11. Dermatitis 13. Equine viral rhinopneumonitis 15. Fowl cholera 17. Histoplasmosis 19. Infectious bronchitis 21. Infectious Bursal Disease 23. Newcastle Disease 25. Paramyxovirus type III infection 27. Q-fever 29. Sheep pox and Goat pox 31. Tuberculosis

2. Allergy rhinitis 4. Asthma 6. Canine distemper 8. CBPP (Contag. Bov. Pleuro Pneum) 10. Chronic Respiratory Disease (CRD) 12. Equine influenza 14. Fluorosis 16. Hay fever 18. Immuno-suppression 20. Infectious Bovine Rhinotracheitis 22. Marek's Disease 24. Papillomatosis 26. Plumbism 28. Sever acute respiratory syndrome 30. Swine influenza 32. Psittacosis

FOOD-BORN DISEASES 1. Bacillary dysentery 3. Cholera 5. Diphtheria 7. Staphylococcal enterotoxic gastritis 9. Tick-borne encephalitis 11. Typhoid fever

2. Brucellosis 4. E. coli infection 6. Q-fever 8. Streptococcal infections 10. Tuberculosis 12. Paratyphoid fever

DISEASES OF LIVESTOCK; Common Name & Causative Agent A) VIRAL DISEASES Name of Disease

Synonym

Causative Agent

Foot and Mouth Disease Rinderpest

FMD; Apthous fever Cattle plague; Bovine

Apthovirus, Picornaviridae Rinderpest virus of family

A KEY GUIDE FOR

Peste Des Petitis Ruminants Bovine Viral Diarrhea Malignant Catarrhal Fever Blue Tongue Vesicular Stomatitis Ephemeral Fever Infectious Bovine Rhinotracheitis Pseudo rabies Cow pox Goat pox Sheep pox Swine pox Horse pox Pseudo cow pox Swine Fever Vesicular Exanthema African Swine Fever Transmissible Gastroenteritis Japanese Encephalitis Contagious Ecthyma Maedi Pulmonary Adenomatosis Bovine Leukosis Corona virus infection Equine Influenza Equine Infectious Anemia Pulmonary Disease in Horse Respiratory Disease Complex 9

PCS

& OTHER COMPREHENSIVE EXAMS

typhus PPR; Pseudorinderpest, Kata, Goat plague BVD; Mucosal disease MCF; Catarrhal fever; Gangrenous coryza Sore mouth; Epizootic catarrh; Pseudo FMD Mouth thrush; Sporadic aptha; Estomatitis Three day sickness; Stiff sickness IBR; Red nose; Necrotic rhinitis Aujeszky's disease; Mad itch Variola vaccina Variola capra Ovine px; Variola ovina Variola suilla; Contagious impetigo Variola equine; Contagious pustular stomatitis Milker's nodules; Ring sore Hog cholera; Peste porcine -African pig disease; Wart hog disease T.G.E. -Contagious pustular dermatitis; ORF; Scabby mouth Progressive interstitial pneumonia Jaagsiekte Bovine lymphosarcoma CCV; Viral gastroenetritis Equine distemper; Typhoid fever; Pink eye EIA; Swamp fever Chronic obstructive pulmonary disease (COPD) Kennel cough

Paramyxoviridae Morbillivirus of family Paramyxoviridae Pestivirus of family Togaviridae Gamma herpesvirus Orbivirus of family Reoviridae VS virus of family Rhabdoviridae EF virus of family Rhabdoviridae Bovine herpes virus-I Herpes virus Cow pox virus Capri pox virus Capri pox virus Sui pox virus Equi pox virus Para pox virus Togavirus Calicivirus Irido virus Corona virus Arbovirus of family Togaviridae ORF virus of family Poxviridae Lentivirus of family Retroviridae Not yet defined Bovine leukemia virus of family Retroviridae Corona virus Myxovirus EIA virus; Lentivirus of family Retroviridae Multifactorial Borderella bronchoseptica

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

in Dog Equine Viral Rhinopneumonia Scrapie Louping ill Bovine Spongiform Encephalopathy Canine Distemper

Rhinopneumonitis; Equine viral abortion Rida; Tremblante du mouton Ovine encephalomyelitis BSE; Mad cow disease

Rotavirus Diarrhea

Hard pad disease; Canine influenza Rubarth's disease; Contagious hepatitis Mad dog; Hydrophobia; Jalatanka; Lyssa --

Parvovirus Infection in Dog

--

Feline Panleukopenia

Feline distemper; Feline parvovirus; Feline ataxia Cat flu, FVR;

Infectious Canine Hepatitis Rabies

Respiratory Disease Complex in Cat Feline Leukemia

Lymphosarcoma

Equine herpes virus -I Prion Flavivirus of family Togaviridae Prion Canine distemper virus of family Paramyxoviridae Adenovirus I & II of family adenoviridae Lyssa virus of family Rhabdoviridae Retavirus of family Rotaviridae Parvovirus of family Parvoviridae DNA virus Feline herpes virus-I Retrovirus

B) BACTERIAL DISEASES Name of disease Anthrax Hemorrhagic Septicemia Brucellosis Tuberculosis Paratuberculosis Leptospirosis Listeriosis Colibacillosis Salmonellosis Actinomycosis Actinobacillosis

Synonym Splenic fever; Charbon; Wool sorter's disease Pasteurellosis; Shipping fever; Stockyard disease Bang's disease; Infectious abortion; Enzootic abortion Pearl's disease; Pthisis; Scrofula Johne's disease; Chronic bacillary dysentery Weil's disease; Stuttgart disease; Rice field worker's disease; Canine typhus Circling disease; Silage disease Calf scour; White disease; Calf septicemia Paratyphoid Lumpy jaw Wooden tongue; Timber

Causative Agent Bacillus anthracis Pasteurella multocida B.abortus, B. melitensis, B. suis, B. ovis, B. canis Mycobacterium spp. Mycobacterium paratuberculosis Leptospira spp. (L.interrogans, L.pomona, L.canicola, L.hardjo) Listeria monocytogenes Eschericia coli (E.coli) S. typhimurium, S.dublin Actinomyces bovis Actinobacillus lignieresi

A KEY GUIDE FOR

Dermatophylosis Swine Erysipelas Compylobacteriosis Glanders Strangles Exudate Epidermitis Impetigo Glasser's disease Ulcerative Lymphangitis Foot Rot Infectious Kerato Conjunctivitis Black Quarter Tetanus Enterotoxemia Bacillary Hemoglobinurea Botuslim Braxy Infectious Necrotic Hepatitis Malignant Edema t Ill Mastitis Lyme Disease Contagious Bovine Pleuropneumonia Contagious Caprine Pleuropneumonia

PCS

& OTHER COMPREHENSIVE EXAMS

tongue; Big head Mycotic dermatitis; Senekobo disease of cattle, Lumpy wool of sheep Diamond skin disease Vibriosis Farcy; Malleus; Morve; Pacin; Carn Equine distemper; Infectious adenitis Greasy pig disease -Infectious polyarthritis Ulcerative cellulitis; Caseous lymphadenitis Infectious pododermatitis Pink eye; Infectious keratitis Black leg; Quarter ill; Symptomatic anthrax Lock jaw -Red water disease; Infectious hemoglobinuria Limber neck; Loin disease Brad sot Black disease -Naval ill; Poly arthritis; Omphalitis, Urachitis Mammitis; Mammite -CBPP; Lung plague; Lung sickness CP; Pleuropneumonia contagiosa

Dermatophilus congolensis Erysipelas rhusiopathiae Campylobacter foetus Pseudomonas mallei Streptococcus equi Staphylococcus hyos Staphylococcus aureus Haemophilus suis Corynebacterium pseudotuberculosis Spherophorus necrophorus Moraxella bovis Clostridium chauvoei Clostridium tetani Clostridium perfringens Clostridium hemolyticum Clostridium botulinum Clostridium septicum Clostridium novyi Clostridium septicum Mixed etiological agents (E.coli, Strepto, Staph, Actino, Enterococcus) A no. of organisms involved Borrelia burgdorferi Mycoplasma mycoides var mycoides Mycoplasma mycoides caprae

C) FUNGAL DISEASES Name of disease Dermatophytosis Rhinosporidiosis Sporotrichosis Nocardiosis Aspergillosis Aflatoxicosis 11

Synonym Ringworm; --Bovine farcy; Mycotic lymphangitis -Myotoxicosis

Causative Agent Trichophyton verrucosum Rhinosporidia seeberi Sporotrichum schenckii Nocardia farcinicus Aspergillus spp. Aspergillus flavus

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Candidiasis Phycomycosis

Moniliasis Mucormycosis; Zygomycosis

Candida albicans Mucorales spp.

D) PARASITIC DISEASES Name of Disease Amphistomiasis Schistosomiasis Hepatic Fascioliasis Esophagostomosis Bovine Verminous Bronchitis Coenurosis Echinococcosis Hemonchosis Ascariasis

Synonym Stomach fluke disease Nasa Liver fluke disease Nodule worm disease Verminous pneumonia Gid; Sturdy ----

Causative Agent Paramphistomum cervi Sschistostoma bovis Fasciola hepatica E. radiatum, E. columbianum Dictyocaulus viviparous Ceonurus cerebralis Echinococcus granulosus Hemonchus contortus A. vitulorum, A. canis

E) PROTOZOAN & RICKETTSIAL DISEASE Name of Disease Anaplasmosis Ehrlichiosis Babesiosis Theileriosis Trypanosomiasis Leishmaniasis Toxoplasmosis Cryptosporidiosis

Synonym Gall Sickness Canine rickettsiosis Tick fever; Texas fever; Splenic fever; Red fever East coast fever; Rhodesian tick fever Surra ----

Causative Agent Anaplasma marginale Ehrlichia canis B. bigemina, B. bovis, B.equi, B. cabalii Theileria parva, T. annulata, T.mutans Trypanosoma evansi Leishmania donovani Toxoplasma gondi Cryptosporidium parvum

DISEASES OF POULTRY; Common Name & Causative Agent Name of Disease Marek's Disease

Fowl Plague

Synonym Range paralysis; Neural lymphomatosis Ranikhet disease; Avian pneumoencephalitis IB AE; Epidemic tremor; New England disease Avian influenza

Infectious Laryngotracheitis

ILT; Avian diphtheria

Newcastle Disease Infectious Bronchitis Avian Encephalomyelitis

Causative Agent MD virus; Herpes virus Paramyxovirus group I IBV of family Coronaviridae Picornavirus of family Picornaviridae AI virus of family Orthomyxoviridae ILT virus of family Herpesviridiae

A KEY GUIDE FOR Avian Leukosis Complex

PCS

& OTHER COMPREHENSIVE EXAMS

Infectious Bursal Disease

ALC; Avian sarcoma; Big liver disease; IBD; Gumboro disease

Avian Influenza

--

Chicken Infectious Anemia

CIA;

Avian Collibacillosis

Colisepticemia;E.coli infection Fowl cholera; Avian cholera Infectious leukemia Avian salmonellosis Bacillary white diarrhea MG infection --

Avian Pasteurellosis Fowl Typhoid Fowl Paratyphoid Pullorum Disease Chronic Respiratory Disease Coccidiosis in Poultry

Rotavirus type C of subfamily Oncovirinae IBD virus of family Birnaviridae Influenza A virus of family Orthomyxoviridae CIA virus of family Circoviridae Escherichia coli Pasteurella multocida Salmonella gallinarum Salmonella typhimurium Salmonella pullorum Mycoplasma gallisepticum Eimeria spp. (e.g. E.tenella)

INCUBATION PERIODS OF COMMON DISEASES Diseases Anaplasmosis Anthrax Babesiosis Black quarter Brucellosis Contagious ecthyma Canine distemper Foot and Mouth Disease Glanders Hemorrhagic Septicemia Influenza (equine) Influenza (piglets) Johne's disease Leptospirosis Malignant oedema Pox (sheep, cow) Pustular dermatitis Rabies (all animals) Rinderpest Strangles Swine erysipelas Tetanus Trypanosomiasis Tuberculosis Vibriosis

13

Range (Days) 17-48 5-10 7-21 1-5 21-180 5-8 3-7 2-10 30-90 2-5 3-10 2-7 30-730 7-9 2-5 2-7 4-7 9-450 3-9 3-8 1-5 7-21 4-13 30-90 20-60

Average (Days) 30 7 --60-120 -4 3 30 3 4 -90 8 3 --30-90 3 --15 7 30 35

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

ORIGIN OF ORGANS Ectoderm Epidermis, hair, nail and lens Epithelium of sensory organs, enamel, mouth, and anal canal Nervous tissue

Mesoderm All type of muscles Blood, bone marrow

Endoderm Pharynx epithelium Larynx, Lungs

Lymphoid tissue, Blood vessels Body cavities Kidney, Ureter Gonads t cavities

Digestive tube Bladder Vagina Urethra

CRANIAL NERVES No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

Name Olfactory Optic Occulomotor Trochlear Trigeminal Abducens Facial Glossopharyngeal Vagus Spinal Accessory Hypoglossal

Type Sensory Sensory Motor Motor Mixed Motor Mixed Mixed Mixed Motor Motor

TYPE OF BODY TS Sr. 1. 2. 3. 4. 5. 6. 7.

Type of ts Ginglymus (hinge) t Arthrodial (plane) t Trochoid (pivot) t Enarthrodial(ball & socket) t Suture t Synsarcosis Syndesmoses

Example Fetlock t ts between adjacent carpals a Atlanto-axial t Coxo-femoral t Skull bone ts ts between scapula and bony thorax t of shaft of split bones & canon bone of horse

IMPORTANT TS OF BODY Name of t Stifle t Hip t Shoulder t Elbow t

Between the bone Femur and tibia Pelvis and femur Scapula and humerus Humerus and radius

A KEY GUIDE FOR Fetlock t Pastern t Coffin t

PCS

& OTHER COMPREHENSIVE EXAMS Metacarpus and proximal phalanx Proximal phalanx and middle phalanx Middle phalanx and distal phalanx

SYNONYMS OF BONES / PROCESSES Real Name Tuber coxae Tuber ischii Metacarpal First phalanx Second phalanx Third phalanx Oleocranon process

Synonyms Point of hip or hook bone Pin bone Canon Long pastern bone Short pastern bone Coffin bone Point of elbow

SITE OF THORACOCENTESIS Animal Horse Cattle and Sheep Dog and Cat

Right (ICS) 6th 5th 6th

Left (ICS) 7th 6th 7th

LIVER BIOPSY Animal Horse Cattle & Sheep Dog, Cat, Pig

Site Right dorsal half, 11th – 14th ICS Upper third right side, 11th ICS Last 2 ICS close to the costal arch

SITE FOR PULSE RECORDING Horse Cattle Sheep, Goat, Dog, Cat Fowl

Lower jaw, where the external maxillary artery is continued across the face as facial artery. Coccygeal artery on either side of the under aspect of tail. Femoral artery inside the hind limb, more than the half way between stifle and hip t Wing artery on the inner aspect of the wing

SUTURE MATERIALS Category Absorbable (organic) Non-absorbable a) Organic b) Inorganic c) Synthetic 15

Example Catgut, Fascia lata, Kangaroo tendon, cargile membrane, Amniotic membrane, Polyglycolic acid (Dexon) Cotton, Silk, Silk warm gut, Horse hair, Linen, Umbilical tape Metallic, suture wire, steel wire, Wound clips, Pin suture. Nylon, Terelene, Vetafil, Polyester, Surgilene Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

ABSORBABLE SUTURE MATERIAL Name Cat gut Kangaroo tendon Cargile membrane Collagen Amniotic membrane

Obtained from Submucosa of small intestine of sheep Tendon of tail of Kangaroo Bovine caecum Bovine flexor tendon filament Foetal amnion

VETERBRAL COLUMN IN DIFFERENT ANIMALS Species Horse Cattle Sheep Hog Chicken Human

Cervical 7 7 7 7 14 7

Thoracic 18 13 13 14-15 7 12

Lumber 6 6 6-7 6-7 14 (fused) 5

Sacral 5 5 4 4 6 5

TYPE OF MUSCLES Sr. 1. 2. 3. 4. 5. 6.

Type of Muscles Flexor Extensor Sphincter striated Cutaneous muscle Antagonistic Synergists

Example Biceps brachii for elbow Triceps brachii for elbow Obricularis oculi Cutaneous trunchi muscle Biceps brachii and brachialis Triceps brachii and Anconeus

SENSATION AND NERVE ENDINGS Sensation Touch Deep pressure Heat Cold Muscle sense

Receiving nerve endings Meissner's corpuscles, Morke's discs Vater Pacinian corpuscles Corpuscles of Ruffini Krause end bulbs Neurotendinous organ

TASTE PERCEPTION IN TONGUE Area of tongue Base Lateral side Tip

Type of taste Bitter Sour, salt Sweet or salt

Coccygeal 15-20 18-20 16-18 20-23 -4

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

CARCASS CHARACTERISTICS Parameters Side length Muscular development of hind quarter Thoracic cavity Ribs Superior spinous process of first six vertebrae Extension of ulna Articulation among last three lumber vertebral Flesh

Horse Unusual Great Longer 18 pairs Markedly developed

Ox Lesser Less Shorter 13 pairs Less developed

Up to half the length of radius Articulates

Articulates with carpus

Dark bluish red, sweet taste, fibrous

Lacks blue tinge

Do not articulate

CARCASS CHARACTERISTICS Features Back and withers Thorax Tail Radius Scapula Flesh

Sheep Round and well fleshed Barrel shaped Fairly broad 1 1/4 times length of metacarpus Short and broad Pale red and fine

Goat Sharp, little flesh Flattened laterally Thin Twice as long as metacarpus Long Dark red of coarse with goaty odour

IODINE VALUE OF MEAT Animal species Horse Ox Sheep Pig Good Lard

Iodine value of meat 71-86% 38-46% 35-46% 50-70% 66%

REFRACTIVE INDEX OF MEAT Animal species Horse Ox Pig

R.I. of meat fat 53.5 < 40 < 51.9

BLOOD AS % OF LIVE BODY WEIGHT Species % of blood 17

Cattle 3-4

Calves 5-6

Pigs 3-4

Sheep 4-4.5

Lamb 3.5-4

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

TIME OF EGG FORMATION IN THE CHICKEN Part of egg formed Yolk Thick mucin Albumin Shell membrane Watery solution Shell Bloom (mucus)

Site of formation Ovary Infundibulum Magnum Isthmus Shell gland Shell gland Vagina

Time of formation 7-9 hours 15-30 minutes 2-3 hours 1.5 hours 3-5 hours 19-20 hours 1-10 minutes

COMPOSITION OF MILK AND EGG Nutrients Water (gm) Protein (gm) Fat (gm) Calcium (mg) Phosphorus (mg) Iron (mg) Vit. A (IU) Riboflavin (mg) Niacin (mg)

Milk 87 4 3.5 118 93 Trace 140 0.17 0.11

Egg 60 12 4 48 180 2.1 1080 0.27 0.07

DUNG AND URINE EXCRETION IN DIFFERENT SPECIES Type of Animals Horse Cattle Sheep Pig Poultry

Dung (kg) 16.10 23.50 1.13 2.70 0.04

Urine (kg) 3.6 9.0 0.60 1.5 --

APPEARANCE OF CONJUNCTIVA IN DIFFERENT SPECIES Animals Cattle, buffalo, and sheep Horse Pigs Dogs Cats

Conjunctival colour Light pink Pale pink/ roseate Reddish Pale Pink Pale

PERCENT CAPACITY OF RUMINANT STOMACH Animals Cattle and buffalo

Rumen 55

Reticulum 5-7

Omasum 26-30

Abomasum 13-14

A KEY GUIDE FOR Sheep and goat

62

PCS

& OTHER COMPREHENSIVE EXAMS

11

5

22-23

RUMINANT STOMACH Part of Stomach Rumen

Reticulum Omasum Abomasum

Remarks Largest compartment of stomach, on left side. Dorsal sac is the largest sac of rumen. Lined by glandless stratified squamous epithelium (Turkish towel appearance). Rumen liquor has pH 5.8 to 6.8, also known as Paunch. Temperature inside rumen is 39 C. Also called Honey comb. Made up of stratified squamous epithelium located immediately behind diaphragm in opposition to heart. Inside temperature is 39 C. Primary function is to remove water by about 50% and to absorb VFAs. (Absent in Camel) True stomach. Glandular. pH = 2.0. Enzymatic digestive site. It is similar to fundic region of non-ruminant stomach.

PANCREATIC JUICE Sr. 1 2 3 4

Parameters Enzyme precursors Active enzyme Cations pH

Components Trypsinogen, Chymotrypsinogen Elastase, Amylase, Lipase Sodium, Potassium, Calcium 7.5-8.0

DIGESTIVE JUICE Secretion

Source

Target

Contents

Remarks

Saliva

Mouth

Gastric juice

Salivary glands Gastric glands

Break starch into dextrin and maltose Milk curdling, Protein protease and peptones

Bile

Liver

Pancreatic juice

Pancreas

Small intestine Small intestine

Intestinal juice

Duodenal glands and goblet cells

Amylase, salt, mucus water HCl, Pepsinogen, Renin, Mucus Bile pigments, bile salts Lipase, Amylase, Trypsinogen and Chymotrypsin Enterokinase, Peptidase, Maltase, Sucrose, and Lactase

19

Stomach

Small intestine

Fat emulsification, Neutralize chyme Fat degradation, starch and dextrin break into maltose, amino acids liberation Splits amino acid, maltose, sucrose and lactose

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

VARIATION IN THE COLOUR OF FECES Animals Calves Adult Cattle/Buffalo

Conditions Unweaned Diarrhea Grazing on pasture Stall feeding Constriction of bile duct Acute acidosis (Grains overload) Excess bile Poor ration, Ketosis Occult blood Blood from caudal intestine

Colour Yellowish-brown or grey Whitish or yellowish Dark green (loose) Brownish Pale to grey Yellowish-brown Yellowish Brown-black surface Dark brown or tarry Dark red

BLOOD CHEMISTRY CHART Blood constituents Blood glucose

Variation Decrease Increase

Urea nitrogen Creatinine

Increase Increase

Bilirubin

Increase

Calcium

Decrease Increase Decrease Increase

Phosphorus Magnesium

Decrease

Ketone Alkaline phosphatase Aspartate aminotransferase (AST) LDH & K Sodium Potassium

Increase Increase Increase

Chloride Bicarbonates

Increase Decrease Decrease Increase Decrease Decrease Increase

Associated diseases Hypoglycemia, Ketosis, Starvation Diabetes mellitus, Hyperglycemia, Hypoinsulinemia Nephritis, Urinary calculi Severe renal damage, Wasting disease, Increased protein breakdown Intra/extra biliary obstruction, Severe hepatopathy or hemolysis Milk fever, Hypocalcemia, Osteoporosis Hyperthyroidism, Hypervitaminosis D3 Hypophosphatamia, Osteomalasia, Bone fracture healing, advance chronic renal insufficiency Hypomagnesemia, Grass tetnay, Whole milk tetany in calves Ketosis, Starvation, Advance diabetic mellitus Bone repair, Fracture healing Myocardial necrosis, Muscle dystrophy, Hepatitis, Azoturia Liver damage, Carbon tetrachloride toxicosis Muscular dystrophy and Muscle damage Vomition, Diarrhea, Low intake Hyperkalemia, Acidosis Vomition, Diarrhea, Low intake of salt Acidosis, Grain engorgement Alkalosis, Urea toxicity, Amonia toxicosis

CHROMOSOME NUMBERS Species

Chromosomes Pairs Total

Male

Female

A KEY GUIDE FOR Man Horse Cattle Buffalo Sheep Goat Swine, Cat Dog Poultry

23 32 30 24 27 30 19 39 39

PCS

& OTHER COMPREHENSIVE EXAMS

46 64 60 48 54 60 38 78 78

XY XY XY XY XY XY XY XY ZZ

XX XX XX XX XX XX XX XX ZW

CLASSES OF CARBOHYDRATES Class 1. Monosaccharides a) Pentoses (C5H10O5) b) Hexoses (C5H12O6) 2. Disaccharides (C12H22O11) 3. Trisaccharides (C18H32O16) 4. Polysaccharides a) Pentosans (C5H10O16)x b) Hexosans (C6H10O5)x c) Mixed type

Examples Arabinose, Xylose, Ribose Glucose, Fructose, Galactose, Mannose. Sucrose, Maltose, Lactose, Cellobiose Raffinose Araban, Xylan Dextrin, Starch, Cellulose, Insulin, Glycogen Mimicellulose, Pectingums, Mucilages

MINERALS Macro-Minerals Calcium Phosphorus Sodium Potassium Magnesium Sulphur Chlorine

Micro-Minerals Iron Copper Zinc Cobalt Iodine Manganese Selenium Molybdenum Fluorine, Vanadium, Chromium, Silicone

QUARANTINE PERIOD Disease Infectious bronchitis Rabies Bacterial infection Fowl cholera Fowl typhoid African swine fever Newcastle Disease Fowl Plaque Chlamydiosis 21

Species Fowl Dog, Cat Zebra Poultry Poultry Swine Birds Wild birds Pigeon

Period (OIE guidelines) 28 days 4 months 2 weeks 14 days 28 days 40 days 21 days 21 days 45 days

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Aspergillosis Rinder pest CBPP Anaplasmosis Tuberculosis Enzootic bovine leucosis Hemorrhagic Septicemia (H.S.) Infectious bovine rhinotracheitis Swine fever Porcine brucellosis Swine Transmissible Gastroenteritis Pox Blue Tongue CP Dourine Glanders Salmonellosis Equine Influenza Japanese Encephalitis Contagious Equine Metritis

Psittacine birds Cattle Bovine Ruminants Bovine Bovine Cattle Bovine Swine Swine Swine Sheep, Goat Sheep Sheep Horse Horse Pregnant mares Equine Domestic and wild pig Equine

45 days 21 days 180 days 100 days 3 months 4 months 28 days 30 days 6 weeks 30 days 28 days 30 days 40 days 180 days 28 days 28 days 6 weeks 28 days 28 days 30 days

DENTAL FORMULA Species Horse

Cattle, Buffalo, Sheep, Goat Cat Dog Pig Camel

Deciduous or Temporary 2 x [IM/IM] 3030 = 24 3030 0030 4030 3130 3120 3130 3130 3130 3130 1130 3120

= 20 = 26 = 28 = 28 = 26

MOUTH GAGS Name Varnell's gag Butler's gag Haussman's gag Probang (Wooden) gag Spring gag

Animals Horse Horse Horse Cattle Dog

Permanent 2 x [IM/IM] 3133 = 40 (Male) 3133 3033 = 36 (Female) 3033 0033 = 32 4033 3131 = 30 3121 3142 = 42 3143 3143 = 44 3143 1133 = 34 3123

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

INFLAMMATION Sr. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33.

Myelitis Pachymeningitis Leptomeningitis Poliomyelitis Typhilitis Proctitis Oophoritis Salpingitis Metritis Orchitis Posthitis Balanitis Gonitis Coxitis Bursitis Acne Laminitis Blephritis Stye or Hordeolum Keratitis Iridocyclitis or Anterior uveitis Phlebitis Omphalitis Adenitis Lymphangitis Rhinitis Pneumonia Sialadenitis Cholangitis Cholecystitis Ingluvitis Pyelonephritis Cystitis

Organ/Structure Spinal cord Dura mater Pia mater Greymater in brain Caecum Rectum Ovary Oviduct Uterus Testes Prepuce Glans penis Stifle t Hip t Bursa over t Sebaceous gland Laminae of hoof Eyelid Eyelid hair follicle Cornea Iris and Ciliary body Veins Navel Gland Lymph vessel Nasal mucosa Lungs (also Pneumonitis) Salivary glands Bile duct Gall bladder Crop (bird) Pelvis and parenchyma of kidney Urinary bladder

MEDICAL TERMINOLOGY 1. 2. 3. 4. 5. 6. 7. 8. 9. 23

Hyperorexia Polyorexia Inappetance Anorexia Anophagia Allotriophagia Osteophagia Infantophagia Coprophagia

Increased appetite Increased food intake Partial absence of appetite Complete absence of appetite Decreased food intake Abnormal appetite Chewing of bone Eating of young Eating of feces Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

DIFFERENCE BETWEEN SMALL INTESTINE DIARRHEA AND LARGE INTESTINE DIARRHEA Characteristics Frequency of defecation Fecal volume Urgency Tenesmus Mucus in feces Blood in feces Weight loss

Small Intestine No change Increased Absent Absent Absent Dark black (Malena) May be

Large Intestine Increased Decreased Present Present Present Red (Fresh) Rare

TYPES OF PLACENTA Sr. 1 2 3 4 5

Type of Placenta Epitheliochorial Syndesmochorial Endotheliochorial Hemochorial Hemoendothelial

Gross Shape Diffuse Cotyledonary Zonary or Discoid Zonary or Discoid Shperoidal or Discoid

Example Horse, Donkey, Pig Cattle, Sheep, Goat Dog, Cat, Ferret Primates Rat, Rabbit

ANTIBACTERIAL AGENTS Category Penicillin

Classes Narrow spectrum (β-lactamase sensitive) Narrow spectrum (β-lactamase resistant)

Broad spectrum β-lactamase sensitive) Broad spectrum (β-lactamase resistant) Cephalopsorins

Potentiated 1st Generation 2nd Generation 3rd Generation

Example Penicillin G Penicillin V Oxacillin Cloxacillin Flucloxacillin Methicillin Temocillin Ampicillin Amoxicillin Carbenicillin Ticarcillin Piperacillin Amoxicillin-clauvulanate Cephalothin Cephalexin Cefadoxil Cefamandole Cefoxitin Cefuroxime Ceftriaxone Ceftiofur Cefotaxime

A KEY GUIDE FOR Aminoglycocides

PCS

& OTHER COMPREHENSIVE EXAMS

Narrow spectrum Broad spectrum Miscellaneous

Quinolones

Quinolone carboxylic acid

Naphthyridine C.A.

Sulphonamide and Combination

Cinnoline C.A. Pyridopyriminine C.A. Quinolizine C.A. Standard use SLD

SLD for uterine tract infection SLD for digestive tract Potentiated SLD Topical SLD Tetracycline

Natural Semi synthetic

Chloramphenicol Macrolides

Lincosamides Miscellanous

25

14-membered lactone ring group 16-membered lactone ring

Streptomycin Dihydrostreptomycin Neomycin Framycetin Kanamycin Apramycin Spectinomycin Enrofloxacin Norfloxacin Ciprofloxacin Pefloxacin Oxolinic acid Enoxin, Nalidixic acid Cinoxin Pipemidic acid Flumequine Sulfathiazole Sulfadimidine Sulfamerazine Sulfadimethoxine Sulfoxazole Sulfisomidine Sulfaguanidine SLD + Diminopyrimidine SLD + Pyrimethamine Sulfacetamide Mafenide, Silver sulfadiazine, Sulfathiazole Oxytetracycline, Chlortetracycline, Demethylchlortetracycline Tetracycline, Methacycline, Rolitetracycline Minocycline Doxycycline Thiamphenicol, Chlorphenicol Florphenicol Erythromycin, Oleandomycin, Troleandomycin Spiramycin, Josamycin, Tylosin Lincomycin, Clindamycin Polymixin, Bacitracin, Vancomycin, Novobiocin, Timulin, Rifamycin, Nitrofurans Nitroimidazoles.

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

ANTIFUNGAL AGENTS Class Polyene macrolides Imidazole

Example Amphotericin B Nystatin, Pimaricin Ketocanazole Itracanazole, Thiabendazole Fluconazole

Flucytosine

Systemic

Cryptococcal meningitis, Candidiasis, Aspergillosis Trichophyton, Microsporum

Griseofulvin Local/ topical agent

Spectra Broad

Tincture of iodine, Phenol, KI, CuSO4, Gentian, Violet, Nystatin, Tiacetin, Polynoxylin, Olamine.

ANTIVIRAL AGENTS Name Pyrimidine nucleosides

Spectrum Herpes simplex

Purine nucleosides

Herpes encephalitis s

Ribovirin

DNA & RNA virus Adeno, Herpes, Orthomyxo, Paramyxo, Pox, Picorna, Reovirus Retro virus (AIDS) Pseudorabies, Influenza C Wide spectrum

Azidothymidine Amentadine Interferone

Example Trifluridine Idoxuridine Vidarabine Acyclovir Deoxyacyclovir

ANTHELMINTICS Class Inhibitors of tubulin polymerization Uncouplers of oxidative phosphorylation Inhibitors of enzymes in glycolytic pathway Cholinesterase inhibitors Cholinergic Agonist Muscle hyperpolarization Potentiation of inhibitory transmitters

PRE-ANAESTHETIC AGENTS

Example Benzimidazoles, Probenzimidazole Salicylanilides Clorsulon Organo-phosphorus (Coumaphos, Dichlorvos, Haloxon, Trichlorofon) Imidathiazoles (Levamisole, Tetramisole) Pyrimidines (Morantel, Oxantel, Pyrantel) Piperazine Macrocycliclactones (Ivermectin, Doramectin, Milbemycin, Moxidectin)

A KEY GUIDE FOR

Type Anticholinergics Morphine & derivatives Tranquilizers

Neurolaptanalgesics

PCS

& OTHER COMPREHENSIVE EXAMS

Example Atropine sulphate Hyoscine Glycopyrrolate Morphine, Pethidine, Fetanyl, Etorphine, Pentazocine, Methadone Chlorpromazine HCl (Largactil), Triflupromazine HCl (Siquil), Promethazine HCl (Phenergan), Droperidol Acetylpromazine Xylazine, Detomidine Fentanyl citrate + Droperidol + Methadone + Acepromazine

DOSES OF IMPORTANT DRUGS Name of Drug Atropine sulphate Pentazocine (mg/kg) Etorphine Meperidine HCl Largactil Xylazine Ketamine HCl Propofol Chloral hydrate

Dog Horse 0.02 mg/kg IM 40-60 mg IM -0.5-4.0 orally 2 µ/kg for wild animals 5-10 mg/kg 1 mg/kg upto 1 gm 0.5-1 mg/kg IM 0.4 mg/kg IM 1-2 mg/kg IM -10-20 mg/kg IM -6 mg/kg IV 2 mg/kg IV -6.5g/50 kg IV

Cattle/Buffalo --1 mg/kg upto 1 gm 1 mg/kg IM ---90-100 mg/kg IV

EMERGENCY DRUGS AND THEIR ANTAGONISTS Drug Atropine Morphine Pentobarbital sodium Organo-phosphorus compound 5-OH Tryptamine Kallikrien Angiotensin Heparin Vitamin K Alcohol Aercoline Aspirin Barbiturate Barium Belladona Benzoic acid 27

Antagonist / Antidote Physostigmine Nalloxone Yohimbine PAM Methysergide, LSD, Ergot alkaloid Aprotonin Saralosin Toluidine Potamine Coumarine NaHCO3, or Na-citrate Atropine sulphate NaHCO3, Coramine Amphetamine MgSO4 Tannic acid Siquil, Diuretics Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Bromides Camphor Castor oil Ephedrine Chloroform Formaldehyde Digitalis Coumarine Iron toxicosis Inorganic phosphorus

Chlorides Siquil, Saline diuretics Lavage, Atropine sulphate Lavage, Emetics O2, Coramine, Ca-borogluconate Lavage, Na-carbonate Lavage, Propranolol, Na2SO4 Vit. K Deferoxamine CuSO4

ANIMAL DISEASES AND THEIR NICKNAMES Diseases Anaplasmosis Hemobartenellosis Schistosomiasis Trypanosoma cruzi infection Trypanosoma evansi infection Trypanosoma equiperdum infection Cutanoeus asthenia Streptococcal lymphadenitis in pigs Dirofilariasis High mountain disease Clostridium piliforme disease Brachygnathia Prognathia Ankyloglossia Epitheliogenesis imperfect Epulis Segmented aplasia Lipomatosis Bloat Lactic acidosis Hardware disease Fasciola magna infection Dirocoelium dendriticum infection Eurytrema infection Paramphistome infection Trichostrongylus axei infection Theiler's disease Black disease Equine ehrlichial colitis Escherichia coli enterotoxemia Porcine proliferative enteritis

Nickname (Synonym) Gall sickness Feline infectious anemia Bilharzia Chagas disease Surra Dourine Ehlers danlos syndrome Rubber puppy disease Jowl abscess Heart worm disease Brisket disease; Pulmonary hypertensive heart disease Tyzzer's disease Parrot mouth (in horse) Sow mouth (in horses) Bird tongue Smooth tongue Gingival hyperplasia Rectal agenesis Abnormal fat necrosis Ruminal tympany Grain overload Traumatic gastritis or Traumatic reticuloperitonitis Giant liver fluke infection Lancet fluke infection Pancreatic fluke infection Rumen fluke infection or Conical fluke infec. Hair worm infection Serum hepatitis idiopathic acute hepatitis Infectious necrotic hepatitis Potomac horse fever Edema disease Ilietis or Porcine intestinal adenomatosis

A KEY GUIDE FOR

PCS

Slavery mouth / Slavers / Rattle Belly Vincent's stomatitis or Trenchmouth Spirocerca lupi infection Trichiuris infection Ancylostoma caninum infection Acanthocephalus infection Blepheritis Dacrocystitis Pink eye Cushing's disease Addison's disease Actinobacillus lignieresii infection Actinomyces bovis infection Splenic fever or Charbon or Milzbrand Borreliosis Bacillary hemoglobinuria Clostridium chauvoei infection Clostridium novyi infection Lamziekte Pulpy kidney disease Akabane disease Hairy shaiker disease Leptospirosis Listeriosis or Listerellosis Yersiniosis Tularemia Swamp fever Equine typhoid Glanders Swine fever Glasser's disease Coronaviral encephalomyelitis Ondiri disease Three day sickness Thrombotic meningoencephalitis Cowdriosis Snotsiektte Johne's disease Rinderpest Canine distemper Feline distemper

& OTHER COMPREHENSIVE EXAMS Watery mouth disease (lambs) by E.coli Necrotizing ulcerative gingivostomatitis Esophageal worm infection Whipworm infection Hook worm infection Thorny headed worm infection Eyelid inflammation Lacrimal sac inflammation Infectious opthalmia Hyperadrenocorticism Hypoadrenocorticism Wooden tongue Lumpy jaw Anthrax Lyme disease Redwater disease Black leg disease Big head disease Botulism Type D enterotoxemia Akabane virus infection Border disease (Pestivirus) Redwater disease of calves Circling disease Plague Francisella tularemia Equine infectious anemia Equine viral arteritis Farcy Hog cholera Infectious polyarthritis Vomiting and washing disease Bovine petechial fever Ephemeral fever Hemophilus sominus disease Heartwater disease Cattarrhal fever or Gangrenous coryza Paratuberculosis Cattle plague Hardpad disease Feline panleucopenia

DURATION OF ESTRUS AND OPTIMAL BREEDING SEASON 29

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Species Cycle type Horse Cattle Sheep Goat Pig Dog Cat

Seasonally polyestrus (early spring to summer) Polyestrus all year

Cycle length 19-26 days 21 days

19 days

Duration Optimal breeding time of estrus 6 days Last few days, should be bred at 2 days interval 18 hours Insemination from midestrus until 6 hrs after end of estrus 24-48 18-20 hr after onset of estrus hours 2-3 days Daily during estrus

21 days 3.5-13 months

2-3 days 2-21 days

14-21 days

6-7 days

Seasonally polyestrus (early fall to winter) Seasonally polyestrus (early fall to winter) Polyestrus all year Un-seasonally monoestrus

16.5 days

Induces ovulation Seasonally polyestrus (spring and early fall)

~ 24 hrs after onset of estrus From day 2 of estrus and on alternate days thereafter until end of estrus Daily from day 2 of estrus

VACCINATION SCHEDULE FOR CATTLE/BUFFALO Disease

Vaccine

Haemorrhagic Septicemia (HS) Black Quarter

HS oil based vaccine (NIAB) Polyvalent BQ vaccine Anthrax spore vaccine Rinderpest vaccine FMD (VRI)

Anthrax Rinderpest FMD

FMD (Marial) Rabies

Rabies

Time for vaccination Preferably in May/June March/April

Dose rate

Route

3 ml (L.A) 2 ml (S.A) 5 ml

SC

August

1 ml SC

SC

1st injection at 6 mo & 2nd at 2 yrs of age February/March and September/October At start of winter season Post exposure

1 ml

SC

1 ml / 100 kg

SC

3 ml (L.A) 2 ml (S.A) 32 ml daily for 14 days

SC

SC

SC or IM

VACCINATION SCHEDULE FOR SHEEP/GOAT Disease

Vaccine

Enterotoxemia Anthrax

Enterotoxemia Anthrax

Sheep Pox / Goat Pox FMD Pleuro-pneumonia

Sheep Pox / Goat Pox FMD Pleuro-pneumonia

Time for vaccination January and July February or Rainy season March and September February and August October/November

Dose rate 2-3 ml 0.5 ml 1 ml S/C or 0.5 ml IM 1-3 ml S/C 1 ml S/C

A KEY GUIDE FOR Rabies

PCS

& OTHER COMPREHENSIVE EXAMS

Rabies

Post exposure

10 ml daily for 7 days

VACCINATION SCHEDULE FOR DOG Age 6-8 week

Vaccination Hexa dog (CD, canine hepatitis, parvovirus, leptospirosis, parainfluenza) Booster dose of hexa dog Rabies vaccination Repeat hexa dog + rabies vaccination

9-12 week 12 + week 13-16 week Repeat it annually

VACCINATION SCHEDULE FOR CAT Age 8 week

Vaccination Falovac® (Feline rhinotrachitis, feline panleukopenia, feline calcivirus) Repeat Falovac® Rabies + booster of Falovac®

12 week 16 week

VACCINATION SCHEDULE FOR POULTRY A) LAYERS Vaccine Marek's disease Ranikhet disease (F-strain) Gumboro disease Infectious bronchitis Ranikhet disease (Booster) Ranikhet (R2B strain) Fowl pox Infectious bronchitis (booster) Fowl pox (Booster) Ranikhet disease (Killed) Ranikhet and Bronchitis (Combined vaccine) Gumboro disease B) BROILER Vaccine Marek's disease Ranikhet disease (F-strain) Gumboro disease Ranikhet disease (Booster)

Age 1 day 4-10 days 18-21 days 24-48 days 5 – 6 weeks 8-9 weeks 10-11 weeks 14-16 weeks 16-17 weeks 18-19 weeks 40 wks & above

Route of istration Intransal/ Intra ocular Intra ocular / Intra nasal Intra ocular / Drinking water Intra ocular / Drinking water Intra ocular/ Drinking water Subcutaneous Scratching Intra ocular / Drinking water Scratching / Intramuscular Intramuscular / Subcutaneous Drinking water

45-50 weeks

Intramuscular / Subcutaneous

Age 1 day 4-10 days 18-21 days 30-35 days

Route of istration Subcutaneous Intra ocular / Intra nasal Intra ocular / Drinking water Intra ocular / Intra nasal / Drinking water

ANIMAL GENETIC RESOURCES OF PAKISTAN 31

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

A) Buffalo Breed Name Kundhi

Synonym

Utility Milk, meat

Azi-Kheli Nili

Milk, meat Milk, meat

Nili-Ravi

Milk, meat

Ravi

Milk, meat

Geographic Distribution Mainly in Sindh, but also in Punjab and Balochistan Swat valley of KPK Mainly in Punjab but also in metro colonies of other provinces Mainly in Punjab but also in metro colonies of other provinces Mainly in Punjab but also in metro colonies of other provinces

B) Cattle Breed Name Achai Bhagnari Cholistani Dajal Desi Dhanni Gibrali Hariana Hissar Kankraj Lohani Red Sindhi Rojhan Sahiwal Thari

Synonym -Nari --Non-descript Pothwari -----Malir, Sindhi -Lola, Montgomery Tharparkar, Grey Sindhi

Utility Dairy and draught Heavy draught Dairy Medium draught Dairy and draught Medium draught Dairy and draught Draught Draught Medium draught Light draught Dairy Light draught Dairy Dairy and draught

Geographic Distribution KPK Balochistan Punjab Punjab All over Pakistan Punjab KPK Punjab Punjab Sindh and Punjab KPK and Punjab Sindh and Balochistan Punjab Punjab Sindh

C) Sheep Breed Name Baghdale Balkhi Baltastani Balochi Bibrik Buchi Cholistani Damani Dumbi Gojal Harnai Hashtnagri

Synonym

Bugti Bahawalpuri Bekaneri

Dumari

Utility Mutton, Wool Mutton, Wool, Fat Mutton, Wool Mutton, Wool, Fat Mutton, Wool, Fat Mutton, Wool Mutton, Wool Mutton, Wool, Milk Mutton, Wool, Fat Mutton, Wool, Fat Mutton, Wool, Fat Mutton, Wool, Fat

Geographic Distribution Punjab KPK Northern areas Balochistan Balochistan Punjab Punjab KPK Sindh Northern areas Balochistan KPK

A KEY GUIDE FOR Hissardale Kachhi Kaghani Kail Kajli Kali Khijloo Kohai Ghizer Kooka Latti Lohi Michni Pahari Pak-awassi Pak-karakul Poonchi Rukhshani Sipli Thalli Tirahi Waziri D) Goat Breed Name Baltistani Barbari Beetal Beiari Buchi Bugi Toori Bujri Chuppar Damani Dera Din Panah Desi Gaddi Hairy Jarakheil Jattan Kaccchan Kaghani Kail Kajli Kamori Khurassani Kohai Ghizer Kooti 33

PCS

Kutchhi

Haleenjoo Salt range Parkanni, Lamochar

Afridi

Synonym Bari Chamber Sindh Desi Kohistani, Jablu

Jattal

Kajlee, Pahari Baluchi

& OTHER COMPREHENSIVE EXAMS Mutton, Wool Mutton, Wool, Milk Mutton, Wool Mutton, Wool Mutton, Wool Mutton, Wool Mutton, Wool, Fat Mutton, Wool, Fat Mutton, Wool Mutton, Wool, Fat Mutton, Wool

Punjab Sindh KPK AJK Punjab AJK Punjab Northern areas Sindh Punjab Punjab

Mutton, Wool, Fat Mutton, Wool Mutton, Wool, Fat Mutton, Wool Mutton, Wool Mutton, Wool, Fat Mutton, Wool Mutton, Wool Mutton, Wool, Fat Mutton, Wool, Fat

KPK AJK Punjab, Sindh Punjab, Balochistan AJK Balochistan Punjab Punjab KPK KPK

Utility Meat, Milk, Hair Meat, Milk Meat, Milk Meat, Milk Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk Meat, Milk Meat, Milk Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair

Geographic Distribution AJK Sindh, Punjab Punjab AJK AJK Sindh Sindh Sindh, Balochistan KPK Punjab AJK KPK, AJK Punjab AJK Sindh Sindh Punjab, Northern Areas AJK Punjab, Balochistan Sindh Balochistan Northern areas AJK

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Kurri Labri Lehri Lohri Nachi Pak-Angora Pateri Piamiri Potohari Shurri Tapri Teddy Tharki

Bikneri

Salt range Lappi Tharri

Meat, Milk Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Meat, Milk, Hair Mohair Meat, Milk Meat, Milk, Hair Meat, Milk Meat, Milk, Hair Meat, Milk Meat, Milk Meat, Milk

Sindh AJK Balochistan Sindh Punjab Punjab Sindh Northern areas AJK, Punjab AJK Sindh Punjab, AJK Sindh

Utility Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught Meat, Milk, Draught

Geographic Distribution Punjab Punjab Balochistan Punjab Punjab Sindh KPK KPK Balochistan Punjab KPK Sindh Balochistan Sindh Balochistan Balochistan KPK Balochistan Balochistan Sindh Northern Area

Utility Sport Sport Sport Sport Sport Sport Sport Sport

Geographic Distribution Punjab Balochistan Balochistan Punjab Punjab Punjab Punjab Sindh

E) Camel Breed Name Bagri Bikarai Brahvi Brela Campbelpuri Dhatti Gaddi Gulmani Kacchi Kala-chitta Khader Kharai Kharani Larri Lassi Makrani Maya Pishin Rodbari Sakrai Pak Bactrian

Synonym Booja Mehra, Mereeha Thalocha Thari

Sindhi

F) Horses Breed Name Anmol Balochi Heerzai Kajlan Kakka Biralawala Morna Siaen Makra

Synonym

Shien Sindh Desi

A KEY GUIDE FOR

PCS

Pak Thoroughbred Waziri

& OTHER COMPREHENSIVE EXAMS Sport Sport

G) Chicken Breed Name Aseel Desi Lyallpur Silver Black Naked Neck

Synonym

Utility Sport Egg, Meat Egg, Meat Ring Neck, Ghoni Egg, Meat

All over Pakistan KPK

Geographic Distribution All over Pakistan All over Pakistan UAF All over Pakistan

COMMON POISONINGS AND THEIR MANAGEMENT Poisons

Source of Poisons

Important signs

Treatment

● Do not use stomach tube or emetics ● Neutralize acid using chalk, magnesium carbonate, solution of sodium bicarb., lime water, oils. ● For oxalic acid, use calcium preparations, chalk and lime water. Dilute via acids (vinegar), demulcents, eggs, milk, linseed or castor oil. Artificial respiration, respiratory and CNS stimulant; if convulsions, use small doses of barbiturates (IV). Animal should be kept in dark room. Emetics, respiratory stimulants and artificial respiration. Emetics, artificial respiration, nikethamide (coramine), strychnine. ● Nikethamide as respiratory analeptic. ● Oxygen containing 5% carbon dioxide.

A. Inorganic and Organic Chemicals

Acids

---

---

Alkalis

---

---

Antihistamines

---

---

Aspirin

---

---

Barbiturates

---

---

Carbon monoxide

Coal gas

Copper

● istration of large doses of

Difficult respiration, coma, pale mucous membrane and cherry red colored blood. Acute cases: there is vomiting in dog

35

● Symptomatic treatment for shock and gastro-intestinal

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

copper sulphate, ● Contamination of drinking water or pasture top dressed with copper containing products.

Cyanides (Hydrocyanic Acid)

● During summer drought immature sorghum is eaten by cattle. ● Eaten the material which is high in cyanide content.

Fluorine

● Ingestion of pasture contaminated with fluorine (top dressing) with phosphate limestone or feeding of phosphate rock supplements). ● Drinking of water from deep wells. ● Fertilizers contain nitrates. ● Plant raised on high nitrogenous manures. ● Accidental poisoning with sodium or potassium nitrate. Accidental over dosing with strychnine preparations. Used for killing

Nitrate and Nitrites

Strychnine/ Nuxvomica

(vomitus contain much mucous and green to blue colour), abdominal pain, diarrhea, collapse and death within 20 hrs. Chronic cases: Hemoglobinuria and jaundice. Depression, staggering gait, muscle tremors, opisthotonus and dyspnoea. There may be hyper aesthesia, dilation of pupil, and bloat in recumbency.

Acute: Gastroenteritis, vomiting, dyspnoea. Muscle tremor, pupilary dilation and hyper aesthesia. Chronic: Dental lesions, lameness and stiffness with painful gait, pain is evinced on pressure over limb bones. Salivation, abdominal pain, diarrhea and vomiting. Dyspnoea, muscle tremors, staggering gait, cyanosis and convulsions. Reflex excitement, titanic convulsions, opisthotonus and protrusion of eye balls, Death due to

sedatives ● In affected lambs 100 mg ammonium molybdate and 1 gm sodium sulphate orally for 3 to 5 days.

● Sheep: 1 gm sodium nitrate and 2.5 gm sodium thiosulphate in 50 ml water IV. ● Cattle: 3 gm sodium nitrate and 15 gm sodium thiosulphate in 200 ml water IV alongwith 30 gm sodium thiosulphate orally at hourly interval. Other treatment includes respiratory stimulants and artificial respiration. ● Aluminium sulphate: 20 gm orally daily for prevention of chronic fluorosis and larger dose for treatment. ● Calcium salt intravenously.

Methylene blue 1-2mg/kg body weight IV as 1% solution. Treatment should be repeated when large amount of toxic material has been ingested. ● Sedation of animal with chlorpromazine hydrochloride or chloral hydrate or barbiturates. ● Tannic acid orally to

A KEY GUIDE FOR

Sodium chloride

Urea

PCS

animals with bad intentions. Drinking of saline water

● Accidental intake of urea. ● Feeding of large quantity of urea in feed (feed additive as a cheap protein)

& OTHER COMPREHENSIVE EXAMS respiratory arrest.

precipitate the alkaloid.

Vomiting, diarrhea, abdominal pain, blindness

Toxic feed and water must be removed immediately. Symptomatic treatment such as gastro-intestinal sedatives and isotonic fluid should be given. Severe abdominal ● Oral istration of pain, muscle weak acid such as vinegar or tremor, 5% acetic acid. incoordination, ● Parenteral istration dyspnoea, bloat and of calcium and magnesium violent struggling salts. and bellowing

B. Anthelmintic Poisoning

Carbon tetrachloride

Accidental istration into respiratory tract or oral istration of massive dose

Phenothiazine

Accidental over dosing in animals

Hexachlorethane

Accidental over dosing for the treatment of fascioliasis

Immediate effects are staggering, falling, collapse, convulsions and death due to respiratory failure. If animal survive, there is depression, muscular, weakness, diarrhea and jaundice. ● Photosensitization, keratitis, (accumulation of phenothiazine sulphoxide in aqueous humor of eye and produce white opacity of the cornea due to sunrays). ● Hemolytic anemia ● Abortion, ataxia and paralytic Ataxia, dullness, abdominal pain and diarrhea, in severe cases the signs are identical of milk fever.

● Artificial respiration and respiratory centre stimulants. ● ive treatment for hepatitis. ● Parenteral istration of calcium solution and glucose solution.

● Affected animal should be kept in dark place. ● Antiseptic eye ointment and 500,000 IU vitamin A orally for prevention of eye infection. ● Blood transfusion and fluid therapy

● istration of Calcium borogluconate

C. Insecticides Ingestion

Chlorinated 37

● Accidental

Increased

● Saline purgative and

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

hydrocarbons (such as D.D.T., B.H.C., heptachlor, chlordane)

intake ● Spray of dipping to control the ectoparasite. ● Consumption of the treated seed by animals.

Organophosphate ● Accidental (such as intake malathione etc.) ● Spray on the pasture, orchards etc ● Spray/dipping of the animal

excitability and irritability, muscular tremor, weakness, paralysis and convulsions. Chronic: Salivation, dyspnoea, diarrhea, stiffness of muscle. Acute: Profuse salivation, protrusion of tongue, bloat, collapse and death.

activated charcoal (about 5 lbs). Avoid oily purgative. ● Sodium phenobarbital 5 gm per day. ● Atropine sulphate (0.05 mg/kg) IM. ● Calcium salt parenterally. ● Atropine sulphate (double dose) 0.25 mg/kg b.wt. 1/3rd IV and remaining IM ● Saline purgative ● Fluid therapy ● Chloral hydrate or phenobarbitone inj

D. Poisonous Plants

Aflatoxicosis (toxin of aspergillus spp.)

Intake of contaminated groundnuts and sorghum grain and corn etc.

Bracken fern (Pteridium aquilina)

Ingestion of bracken fern

Ergot (Claviceps purpurea – Ergot of rye)

Ingestion of fodder and grain infested with ergot

Hepatic insufficiency, blindness, walking in circles, frequent falling, teeth grinding, diarrhea with blood and mucus, severe tenesmus, finally convulsion and abortion in pregnant animals. Loss of condition, dryness and slackness of the skin, high fever, drooling of saliva, bleeding from the nose, eyes and vagina. Hematuria, petechial haemorrhage on udder mucosa and skin. Edema of throat region and dyspnoea. Chronic: Dry gangrene of the extremities of limbs, tail and ear.

● Symptomatic treatment. ● Infected grain, if given to the animal should be treated with ammonia.

● Butyl alcohol (bone marrow stimulant) 1.0 gm in combination with antibiotics IV or SC. Thiamine hydrochloride.

No treatment Except: ● Infested grain should be with drawn ● Vasodilator drugs be used

A KEY GUIDE FOR

PCS

Lantana (Lantana camara)

Feeding of the plant

Oak (Quercus spp)

Feeding the oak plants

Sweet Clover (Melilotus spp.)

Ingestion of mouldy sweet clover hay which contains dicoumaral).

& OTHER COMPREHENSIVE EXAMS Lameness, and recumbency. Acute: Convulsions, staggering and tendency to fall. Intermittent blindness, paralysis and coma. Sever constipation in early stages, hemorrhagic gastroenteritis, weakness, photosensitization and jaundice. Ventral edema, polyuria, abdominal pain and constipation followed by the age of feces containing mucus and blood. Extensive hemorrhage in subcutaneous tissue, muscles, anemia and increased clotting time.

● Keep the animal in dark place. ● Purgative ● Glucose saline and liver tonic ● Calcium hydroxide (15% of the ration) is an effective antidote. ● Liquid paraffin with milk

● Stop feeding of damaged hay. ● Vitamin K, 2000 mg IV

E. Plant byproduct Poisoning

Soybean Meal

Linseed Cake

Cottonseed Cake

39

When it is prepared by trichloroethylene extraction It contains high content of "cyanide".

It contains phenolic substances

Aplastic anemia, leucopenia and damage to vascular endothelium ● Same as in cyanide poisoning. ● High incidence of goiter in newborn lamb, if ewe fed large quantity of cake during pregnancy. Damage to the myocardium and liver

As in the Bracken fern poisoning Cake can be detoxificated by soaking and then boiling for 10 minute to eliminate the hydrocyanic acid.

Cooking of the cake or addition of 1% calcium hydroxide or 0.1% ferrous sulphate for detoxication.

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

FLUID THERAPY Indications of Fluid Therapy 1. Shock 2. Diarrhea-sever or prolonged 3. Anorexia as a result of pyrexia, digestive disorders and post operative condition 4. Rumen acidosis; Engorgement of grain leads to ketosis, dehydration 5. Vomition – severe or prolonged 6. Burns 7. Endocrine disorders 8. Alkalosis 9. Renal insufficiency 10. Abomasal displacement and torsion The percentage of loss of fluid can be assessed by following rule of thumb: 4-6 % dehydration No sign of dehydration 6-8 % dehydration Moderate dehydration with sunken eyes, 2-4 second skin fold test 8-12 % dehydration Sever dehydration skin fold test 20-45 seconds

Route of istration The selection of the route of route for fluid therapy will depends on certain considerations: a) Kind of disease and its severity b) Extent of dehydration c) Condition of the patient d) Organic function of the patient e) Type of electrolyte imbalance f) Time and equipment available

Solutions Commonly Used: 1) Dextrose solution: are available in 2.5%, 5%, 10% and 25% concentration., but 5% solution is isotonic an used in routine practice. Indications: - To avoid dehydration, depletion of liver glucose, ketosis, excess tissue catabolism - In renal, hepatic, cardiac and gastrointestinal diseases - To accelerate sodium excretion - To increase intracranial pressure only hypertonic solution be used. Contraindications: - Never give more than 5% dextrose solution in ketosis. - The higher percentage will increase ketosis rather than curing. - Never give in case of milk fever - Do not give following blood transfusion

2) Sodium Chloride (0.9% solution) Indications: - Excessive salivation called "Pantar" and digestive disturbances - Vomition - Pyloric obstruction - Abomasal disorders - Heat stroke - Alkalosis due to fluid loss

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Contraindications: - Never give in ascitis and edema

3) Ringer's Solution Indications: - Dehydration - Slight alkalosis or hypochloremia Contraindications: - Milk fever

4) Lactated Ringer's Solution Indications: - Slight acidosis - Dehydration - Burn, infection and peritoneal disorders - To counteract the excess use of acidifying solution. Contraindications: - Liver dysfunction - Congestive heart failure - Anorexia due to shock - Severe metabolic alkalosis - Rumen acidosis 5) Sodium lactate Solution: Indications: - To induce quick alkalinity of urine, prior giving sulpha drugs - To avoid renal damage and hemoglobinuria after blood transfusion - In case of myohemoglobinuria in horses - Metabolic acidosis not of anoxic origin - At the dose rate of 25 ml/kg body weight Intravenously Contraindications: - Vomition - Hepatic disorders - Respiratory alkalosis - Lactic acidosis

6) Acid Sodium Phosphate Solution Indications: - Use in post parturient hemoglobinuria especially in buffaloes at dose rate of 60 gram acid sodium phosphate in 800 ml distilled water given intravenously very slowly. The same dose given SC 12 hours interval for 3 times.

GLOSSARY Nutrition: It is study of quality and quantity of nutrients for particular stage of animal for particular goal. Goal is to optimize productivity. Nutrients: The chemical substance found in feed that can be used and are necessary for maintenance, production and health of the animal. Main classes of nutrients are: Water, Carbohydrates, Protein, Fat, Minerals and Vitamins. Forages: Vegetative portion of plant fed to the animal in fresh, dried or ensiled state. Although most forages are roughages. 41

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Conversely many forages such as corncobs, straws are not forages. Roughages: These are feeding stuffs which are bulky and contain more than 18% crude fiber and less conc. of energy yielding nutrients. These as high in fiber content and low in energy (1-1.4 mcal/kg of DM). Example: Straws, green fodder, hay, silage Concentrate: These are feed stuffs which contain less than 18% crude fiber and less bulky and rich in energy yielding nutrients. These are low in fiber contents and high in energy (1.5-2.2 Mcal/kg of DM). Example: Cereal grains, oil seeds. Health: Health is a state of an individual living in complete harmony with his environment/ surroundings. Disease: It is a condition in which an individual shows an anatomical, chemical or physiological deviation from the normal. Illness: Illness is the reaction of an individual to disease in the form of illness. Hemostasis: It is the mechanism by which body keeps equilibrium between health and disease. Pathology: It is the study of the anatomical, chemical and physiological alteration from the normal as a result of disease in animals. Oncology: It is the study of cancer/tumor/neoplasms. Etiology: It is the study of causation of disease. Diagnosis: It is an art of precisely knowing the cause of a particular disease Symptoms: Any subjective evidence of disease of animal characterized by an indication of altered bodily or mental state as told by owner (complaints of the patients). Signs: These are indication of the existence of something, any objective evidence of disease, perceptible to veterinarian. Syndrome: A combination of symptoms caused by altered physiological process involve a no. of causative agents. Lesion: It is a pathological alteration in structure/ function that can be detectable. Pathogenesis: It is the progressive development of a disease process. It starts with the entry of causal agent in body and ends either with the recovery or death. Incubation period: It is the time that elapses between the action of a cause and manifestation of disease. Course of disease: It is the duration for which the disease process remains till fate either in the form of recovery or death of animal. Prognosis: It is an estimate by a clinician of probable severity or outcome of disease.

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Morbidity rate: It is the percentage/proportion of affected animals out of the total population in a particular disease outbreak. Mortality rate: It is the percentage/proportion of animals out of total population, died due to disease in a particular disease outbreak. Case fatality rate: It is the percentage/proportion of animals died among the affected animals. Biospsy: It is the examination of tissue received from the living animals. Infection: It is the invasion of the tissues of the body by pathogenic organisms resulting in the development of a disease. Infestation: It is the superficial attack of any parasite/organism on the surface of the body. Pathogenicity: It is the capability of an organism for producing a disease. Virulence: Virulence is the degree of invasiveness of pathogenic organism.

BACTERIAL DISEASES Mastitis

Causative agents: Staphylococcus aureus, Streptococcus aglactiae --- These are most prevalent bacteria, Others are: Corynebacterium bovis, Mycoplasma bovis Diagnostic Tests: Bulk tank somatic cell count (at herd level), California mastitis test (distinguish into peracute, acute, subacute and subclinical mastitis); it is negative when SCC is < 200,000 and positive when SCC > 200,000 Treatment: Sulfonamide or ampicillin (parentral) Cefoperazone, Penicillin G and neomycin in combination [intra-mammary]

Strangles

Syn: Equine distemper It is highly contagious disease, mostly affect horses of young age Causative agent: Streptococus equi Signs: Acute onset of fever, anorexia, depression, submandibular and pharyngeal lymphadenopathy with abscessation and upon rupture, there is copious purulent discharge (it may be unilateral or bilateral) Treatment: Penicillin, Local treatment of abscess

Anthrax

Syn: Spleenic fever Causative agent: Bacillus anthracis Signs: Fever, septicemia, edema at throat abdomen and flank region, Exudation of tarry blood from the body orifices, failure of body to clot, absence of rigor mortis 43

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Rx: Penicillin @ 20,000 IU per kg bwt twice daily or Streptomycin @ 8-10 g/day or Oxytetracycline @ 5 mg/kg bwt per day IM

Tetanus Causative agent: Clostridium tetani; releases exotoxins which are: i) Tetanospasmin ii) Tetanolysin Signs: Condition is associated with the history of wound. Other signs are third eyelid prolapse, body muscle stiffness, lock jaw Rx: Penicillin (in larger doses), Chlorpromazine (muscle relaxant) @ 1 mg/kg IM, Hydration status maintained by ing stomach tube and pouring water directly into the stomach, to relieve the animal from urination, urine catheter.

Black Leg

Causative agent: Clostridium chauvoei Cattle of 6 month to 2 years age and rapidly growing with high plan of nutrition are most susceptible. Rx: High doses of penicillin and surgical debridement

Bacillary Haemoglobinuria

Causative agent: Clostrodium hemolyticum; releases neurotoxins and hemolytic betatoxin Signs: Toxemia, Fever, Hemoglobinuria Rx: Penicillin, Tetracycline

Hemorrhagic Septicemia

Syn: Barbone disease, Causative agent: Pasteurella multocida ; normal inhabitant of respiratory tract Transmission: direct by droplets Signs: High temperature (106-107 F), Profused salivation, Warm painful swelling around throat and throat, Dyspnoea Rx: Sulfonamide

Brucellosis

Syn: Bang’s disease (As causative agent was discovered by Bang (A scientist) Zoonosis: Man suffered from undulant fever (also called malta fever , severe headache and pain in back. Causative agent: Brucella abortus, B. mellitensis, B. suis Intracellular bacteria which can survive and multiply within the cells of macrophage system. Signs: It causes abortion after 5th month of pregnancy Rx: No specific treatment Vaccination: Single 5 ml dose of B.abortus strain 19 is used for vaccination given SC at from 2 to 6 month of age.

Tuberculosis

Causative agent: Mycobacterium tuberculosis (in human), Mycobacterium bovis (in bovine) Signs: Progressive emaciation, Fluctuation in temperature, Pharyngeal obstruction etc. Test: Tuberculin test (Single intradermal test)

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Rx: Isoniazid @ 20mg/kg bwt orally Test and slaughter policy for eradication Vaccination: Bacillus calmette guerine (BCG)

Paratuberculosis Syn: Johne’s disease Causative agent: Mycobacterium paratuberculosis Signs: Progressive emaciation over several weeks, Chronic intractable diarrhea which does not respond to any treatment, Corrugation of intestinal wall. A distinguish characteristic of Johne’s disease is that infection occurs in animal at an early age, usually under 30 days of age and clinical disease does not occur until 3-5 years of age. Rx: No effective treatment, Isoniazid @ 20mg/kg up to 100 days. Streptomycin is also effective. Tests: (i) Johnin Intradermal Test (ii) Johnin Intravenous Test

Actinomycosis

Syn: Lumpy Jaw Causative agent: Actinomyces bovis; normal inhabitant of the bovine mouth. Signs: Initially pointless hard immovable swelling onmandible or maxilla usually at the level of central molar teeth. Eventually discharge small amounts of pus through one or more openings in skin. Rx: Surgical debridement, Iodides and/or Sulfonamide orally or parenterally Actinobacillosis Syn: Wooden tongue Causative agent: Actinobicillus lignieresii; normal inhabitant of alimentary tract. Signs: Difficulty in swelling, nodules in cattle and of lips in sheep. Big head Rx: Sodium iodide 1 g/12 kg can be given IV as 10% solution in one does both for cattle and sheep. At least one or two further treatments are at 10-14 days intervals are required for bony lesions. Note: Abortion occasionally occurs following the treatment of heavily pregnant cows with sodium iodide.

Infectious Foot Rot (in Sheep)

Causative agent: Fusiformus necrophorum Serious outbreaks in wet sand warm weather. Signs: Interdigital dermatitis, underrunning of horn, medial aspect of claw, strong smell of necrotic horn, very severe lameness, walk on knees. Rx: Topical treatment. Zinc sulfate solution 10% + sodium lauryl sulfate 2%. Sheep stood for one hour in a footbath. Thirsty sheep may drink the footbath solution and die due to zinc toxicity. Antibiotic treatment; Procaine penicillin single IM of 70,000 IU/kg or 70 mg/kg. Dihydrostreptomycin single IM or Long acting Oxytetracycline single IM dose @ 20mg/kg.

Postparturient Hemoglobinuria It is due to dietary phosphorus deficiency. Signs: Hemoglobinuria, inappetance, reduced milk production, No fever. Rx: IV istration of 60 gm of Sodium acid phosphate in 300 ml distilled water and similar dose SC. Further SC injections at 12 hourly intervals on three occasions and similar daily doses by mouth. 45

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Babesiosis

Syn: Texas fever, Redwater fever, Cattle tick fever Causative agent: Babesia spp. [B.bigemina, B. equi] Transmit by blood sucking ticks of Boophilus spp. Signs: Anemia, Hemoglobinuria, Jaundice, Fever, Heavy case fatality rate Rx: Imidocarb (Imizole) @ 2mg/kg bwt, Diminazine aceturate is affective in sheep @ 12 mg/kg bwt as a single dose. Fusobacterium necrophorum is normal inhabitant of oral cavity and causes inflammation and necrosis, injury of the mucosa of oral cavity, pharynx and larynx Rx: Debridement of ulcer, Application of solution of tincture of iodine, Oral istration of Sulfamethazine @ 150 mg/kg bwt for 3-5 days.

Glanders

Causative agent: Pseudomonas mallei Signs: Acute/ Chronic. Penumonia, Nodular ulcers in respiratory tract and on the skin. The disease is highly fatal, nasal discharge. Rx: Sulfadiazine and Sulfadimidine for 20 days Tests: Mallein Test [ Mallein reagent 0.1 ml is injected in lower aye lid and observed after 48 hrs. Swelling of eyelid confirms the +ve case].

Contagious Caprine Pleuropneumonia (CP)

A disease of Caprine (Goat), it is not transmissible to cattle and sheep. Causative agent: Mycoplasma capriculum Signs: Cough, Dyspnoea, Lagging, Lying down a lot, Fever 105-106 F and in terminated stages, there is mouth breathing tongue protrusion and frothy salivation. Rx: Tylosin tartrate @ 10mg/kg bwt or Oxatetracycline @ 15mg/kg bwt per day

RICKETTSIAL DISEASES Tick Borne Fever

Causative agent: Ehrlichia phagoctophilia Signs: Fever, Depression, Lethargy, Polypnoea, & Fall in milk production in cattle, Abortion Rx: Oxytetracycline @ 10mg/kg bwt IV

Q- Fever

Causative agent: Coxiella burnetti Signs: Clinically inapparent and presents mainly as abortion in sheep Rx: Perhaps Oxytetracycline is effective

Brucellosis

Predilaction sites are gravid uterus, mammary lymph node, mammary glands and testes. Signs: Swelling of mammary lymph nodes, Abortion, Mastitis, Orchitis Tests: Rose Bengal Test, Milk Ring Test

VIRAL DISEASES

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Foot and Mouth Disease (FMD)

Syn: Apthous fever, Contagious aptha FMD is an acute febrile highly contagious disease of cloven footed animals. It is characterized by vesicular eruption on the epithelium of buccal cavity, tongue, nares, muzzle, feet, teats and udder. Etiology: FMD virus (Apthovirus) --- > Family: Picornaviridae; strains found in Pakistan is Asia-1, O, A, C. Virus may remain viable the extent of one year in infected premises. Virus is resistant to common disinfectants. It is destroyed by sodium hydroxide (NaOH), formalin (1-2%) and sodium carbonate (4%). The virus can be preserved in glycerin phosphate buffer with a pH of 7.6. The virus is considered as smallest known virus of animal origin. Transmission: Through direct with infected animals from infective materials, food stuffs, feeding utensils, waterers etc. Spread through air ways like human influenza virus can also take place. The infection imposes a high spread during the cooler season when the air remains in damp condition. The virus initially settle in the cells of the dorsal surface of the soft palate or on the lateral wall of the pharynx following the entry. Clinical Findings: Morbidity: 100%, Incubation period : 2-8 days Virus multiplies in blood stream -- > viremia --- > temp goes 104 to 106 F following peak temperature characteristic vesicles appear in the oral mucosa (vesicular stomatitis), interdigital space, udder etc. at this stage there is reduction in temperature, profuse salivation, and lameness. Drooling of slimy, ropy salivation and protrusion of the tongue are the futures in this stage; lesions appear in the junction of hoof. In severe case, there is shedding of the hooves. Suckling calf usually die as a result of myocarditis and myocardial degeneration. Post-FMD complexes: Penting --- > due to lesions in pituitary gland and thermoregulation (endocrine disturbance), anemia, slower growth of hairs, mastitis, diabetes mellitus. Treatment: No specific treatment Antiseptic mouth wash with potassium permagnate, sodium carbonate, boric acid and glycerin may be applied. Antiseptic may be given on foot lesions and mammary tissues. Vaccination: Commercially polyvalent vaccines is used which contain O,A, C, Asia-I strains.

Rinderpest

Syn: Cattle plaque It is an acute or sub-acute febrile, highly contagious disease of even toed ungulates. It is predominantly a fatal disease of cattle and buffalo characterized by necrotic stomatitis, gastroenteritis, dehydration and destruction of lymphocytes. Etiology: Rinderpest virus -- > Genus Morbillivirus -- > family Paramyxoviridae (Latine “morbi” denotes measles). Virus is spherical with diameter 100-300. virus can be destroyed by ultraviolet light and is heat sensitive. Transmission: Same like FMD. Feces is the main source of infection. Virus can remain alive upto 8 month in faces. Rinderpest virus got tremendous affinity to lymphoid tissue and epithelial tissues/cells of GIT and respiratory tract. Virus cause destruction of lymphocytes in tissues -> leucopenia. Clinical Findings: 47

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Temperature 104 F, Photophobia, Muzzle is dry and there is profuse serious nasal and lacrimal discharge which later on muco-purulent. Necrotic lesion in mucous membrane of oral cavity. The chief sites of oral lesions comprise of inside of the lowerlip and adjacent gums, the cheeks near the commissures of lips; under the tip of the tongue and the back of the hard palate. There is diarrhea and abdominal pain. Rx: Rinderpest antiserum @ 1ml / kg IV. Antibiotic, symptomatic fluid and electrolyte therapy.

Peste Des Petitis Ruminants (PPR)

Syn: Pseudorinderpest, Goat plaque, PPR (plaque as per French phrase in small ruminants); KATA It is an acute to subacute highly contagious disease of small ruminants having resemblance to rinderpest characterized by fever, diarrhea, nasal discharge. The virus belong to Genus Morbillivirus and Family Paramyxoviridae same genus and family as that of Canine distemper, Rinderpest and Measle virus of human. The virus has tremendous affinity for epithelial cells of GIT and lymphoid tissue. Transmission: Some like rinderpest. On entry, the virus invades the retropharyngeal lymph nodes and mucosa.

Bovine Viral Diarrhea (BVD)

Syn: Mucosal disease complex BVD is a subacute, acute, or inapparent contagious disease having the manifestation of high rise of temperature and diarrhea; Pathological features of which are comprised of erosion of the mouth, esophagus, rumen, abdomen and intestine. Diarrhea and erosion of GIT. Etiology: BVD virus --- > Genus: Pestivirus and Family: Togaviridae Host susceptible: Principally noted in Cattle, less in buffalo, deer and wild ruminants. Transmission: occur during all seasons but more in rainy and winter season. Animal of all ages are affected but more in 6 to 24 months of age.

Blue Tongue

It is an infectious non-contagious (arthropod-borne) viral disease of domestic and wild animals. This is predominately a disease of sheep but occasionally cattle, and goat are affected. The disease is characterized by high fever, catarrhal inflammation of buccal mucous membrane (stomatitis) and nasal mucous membrane (catarrhal rhinitis), cyanotic and bluish appearance of tongue; painful hoof; a pink line appear on coronet which is absent in FMD. Etiology: Blue tongue virus --- > Genus: Obrivirus --- > Family: Reoviridae Transmission: Virus spread through blood sucking midges of the genus culicoides and mosquitoes also.

Ephemeral Fever

Syn: Three days sickness It is an arthropod transmitted disease of cattle characterized by high temperature, stiffness, lameness, muscular tremor with spontaneous recovery.

Cow Pox

It is a contagious eruptive skin disease of cattl . It is mild cutaneous disease where the lesions are mostly confined to udder and teat. The disease is transmissible to human beings.

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Etiology: Cowpox virus --- > Genus: Orthopoxvirus --- > Family Poxviridae Transmission: Direct , via hands of milkers and also by insects

Equine Influenza It is an acute febrile highly infectious disease of horses characterized by general septicemia, respiratory problem accompanied by severe persistent + dry cough, nasal discharge. Etiology: Equine influenza virus --- > Genus Influenza virus --- > Family Orthomyxoviridae

Bovine Spongiform Encephalopathy

It is a progressive transmissible neurological disease of bovine characterized by sponge like destruction of brain. Etiology: BSE is caused by poorly understood type of infectious protein particle called “Prion”. It has also zoonotic importance. Signs: Initially abnormal gait particularly hind limb locomotion, behavioral disorders, ataxia, hyperesthesia, excessive salivation, pruritis, rubbing of head, incoordination, restricted stride. Rx: Not yet possible. Amphotericin B is somewhat helpful delay the disease but not cure. Control: Ban on feeding of ruminant derived protein feed.

Canine Distemper

It is an acute highly infectious viral disease of carnivores characterized by diphasic fever, ocular and nasal catarrh and frequent cutaneous eruptions. This infection is often manifested by bronchopneumonia, gastroenteritis and encephalitis. Forms of CD i) Pulmonary form: Oculo-nasal discharge, pharyngitis, bronchitis. Bronchopneumonia is the common feature. The pulmonary form is more prevalent than the digestive form. ii) Digestive form: Loss of appetite, vomition, abdominal pain, semisolid or loose feces, hemorrhagic enteritis is common in young pups. iii) Ocular form: Swollen eyelids, conjunctivitis, and purulent discharge from eyes. iv) Nervous form: Restlessness, excitement, chewing movement, excessive salivation and convulsion. Lymphopenia is the distinct feature of canine distemper. The muscular spasm may be observed in the lips, alae nasii, cheeks, jaws, head, neck or limb muscles. v) Cutaneous form: Appearance of rash, vesicles and pustules. In some cases, skin of foot pads and nose become hard due to hyperkeratosis and the condition is described as “Hard Pad Disease”. There may be vesiculo-pustular eruptions on the ventral aspect of the abdomen and on the inner parts of thighs. Rx: Symptomatic; Anti CD-serum to control the neurological damage. Sedative and anticonvulsants should be given

Rabies

It is an acute viral infection in man and other warm blooded animals. 49

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Etiology: Rabies virus, Genus Lyssa virus and Family Rhabdoviridae It is a bullet shaped virus; Alkali, sunlight and moderate heat destroy virus. It can be preserved in 50% glycerol. Pathogenesis: Following bite, virus is deposited in the depth of wound in the infected saliva. Then local replication of virus in the epithelial cells or myocytes; move centripetally to the central nervous system; nervous pathways @ 3mm/hr virus invade ganglion cells and then centrifugally to the peripheral nerves. Stage of excitement: In this stage, the excitability and irritability increases and dog become very much aggressive. This period may last for 1-7 days. At the onset the dog may hide in dark place due to photophobia. Change in bark due to paralysis of the vocal cord. There is drooling of saliva. Dumb form: This form is known as paralytic form. In this form, there is paralysis of lower jaw, tongue, larynx, and hind quarter. The dogs are not capable to bite man and other animals on their feces. Rabies in cats is usually more furious in form than dog. Cat used to bite man and other animals on their faces. Rx: No specific treatment for clinical rabies; we can use sedative some drugs like Vinkristin, Scopolamide hydrobromide give good response against rabies virus in experimental animals. The site of bite should be washed with running water and soap.

Parvovirus Infection in Dogs

It is characterized by enteritis and myocarditis with high morbidity rate (upto 100%) and frequent mortality (upto10%). Etiology: Parvovirus, Genus Parvovirus and Family Parvoviridae Clinical Findings: There are two forms of this disease: a) Parvovirus enteritis: Hemorrhagic gastroenteritis, serious in pups, vomition, and diarrhea. Polydipsia, Frothy yellow colored vomitus, retching and restlessness. The animal is then brownish semi-solid feces ixed with excess mucus followed by foeted haemorrhagic diarrhea. b) Parvovirus myocarditis

ENDOPARASITIC INFESTATIONS Schistosomiasis Syn: Nasa It is a trematodal infection of cattle, sheep, goat, dog and man caused by schistosoma worms. Causative Agent: Schistosoma bovis Life Cycle: Ovigerous female penetrate deeply into the small vessels of mucus or submucus of the intestine -- > eggs in the capillaries --- > eggs out of the body through the feces --- > Hatching of eggs in water releasing miracidium --- > penetrate the intermediate host (i.e. Snail) --- > development inside the intermediate host into cercariae -- > cercarie come out of

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

the body of the snail and move in the water --- > animals which come to the water hording are attached by cercariae, it either penetrate the body or taken place by animals through drinking water. Cercariae penetrate the blood vessels and reach their site of predilection via genera blood circulation. Intestinal Schistosomiasis Acute form of schistosomiasis, because of presence of large number of ovigerous females in blood vessels and age of large number eggs through intestinal wall, severe hemorrhagic lesions appear in the wall of posterior part of small intestine and caecum particularly. In chronic cases, there is scar formation and destruction of intestinal glands which affect the general health condition of animal. Rx: For intestinal and hepatic schistosomiasis, Praziquantal @ 20 mg / kg orally for 3 days. Clinical Findings: In acute case, profuse diarrhea or dysentery. In chronic case, animal becomes emaciated, anemic and eosinophilia. Nasal Schistosomiasis Adult parasites reach the veins of the nasal mucosa and cause rhinitis. Eggs cause small abscess on the mucous membrane of nasal cavity by sloughing out from the blood vessels. Fibrous tissue develops and leads to the large cauliflower like growth in the nasal age. These are actually granulomatous growth. Common in cattle than buffaloes. The condition is known as “Nasal granuloma” in local language “Nasa”. Clinical Findings: Typical symptoms is rhinitis, muco-purulent discharge along with coryza, sneezing and dyspnoea. When large granuloma develop typical snoring sound which is audible from a reasonable distance. Rx: Tarter emetic @ 2 mg/kg SC or IM daily for 6 days. Copper sulphate is also effective to control the snails and is mixed in water.

Hepatic Fascioliasis

Syn: Liver fluke disease Etiology: Fasciola hepatica – in hilly areas (sheep liver fluke) Fasciola gigantica – in plane areas (deer liver fluke) Life Cycle: Bile duct (adult lay eggs) --- > out through feces --- > hatch to Miracidium (larval form) --- > take up by snail -- > convert to sporocyte in the body of snail --- > form to Radiae --- > Cercarie -- > encapsulate to form Metacercarie -- > contaminate the fodder and grass -- > taken up by foragers -- > go to intestine --- > reach the hepatic portal vein (via duodenum) --> Liver --- > Bile duct where it matures to form adult fluke. Female lays egg 20,000 per day. Life cycle completes in 16 to 17 weeks. Pathogenesis: The metacercariae penetrate through intestinal wall and reach peritoneal cavity. They migrate towards liver through peritoneum and then migrate through the liver parenchyma. Acute fascioliasis It is found in sheep, not in cattle. Acute form is rare and chronic is common. In acute form, there is traumatic hepatitis due to migration of large no. of metacercariae. Chronic fascioliasis It is found in all types of animals of all ages including man. Common pathogenesis is progressive biliary cirrhosis of liver followed by hard fibrotic liver. Wall of bile duct becomes thickened. In cattle, depletion of calcium in bile duct is common pathogenesis. In 51

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

cattle bile duct protrude out of the surface of the liver giving it a clay pipe appearance which is popularly known as “Pipe stem”. Clinical Findings: Acute fascioliasis in sheep most common occur as sudden death with discharge of frothy blood, through nostrils and anus. In chronic form, animal becomes lazy, mucous membranes become pale and skin becomes dry, subsequently edema starts developing particularly below the mandibles and the condition is known as bottle jaw condition. In cattle, most common symptoms are digestive disturbance, emaciation, constipation with animal feeding very difficulty in defecation and followed by diarrhea in extreme cases. Diagnosis: Symptoms, if parasite in bile duct, findings of eggs in feces. Rx: Triclabendazole in specific compound for use in sheep and cattle @ 10 mg/kg in sheep and 12 mg/k g in cattle. It is highly effective against all stage of fluke. Rafaxonide @ 7.5 mg/kg (80-90% effective). Albendazole @ 7.5 mg/kg in sheep and 10 mg/kg in cattle. It is effective against adult fluke. Dictylocaulus viviparous is the only lungworm of cattle which is most of the time, treated with albendazole successfully. Trichinella spiralis is found in muscles.

TAPEWORM INFESTATIONS Cestodes (tapeworms) belonging to Moniezia spp. in ruminants and Anocephala spp in horses. Transmission by ingestion of infected free living pasture mites. Signs: Large no. of tapeworms form closely packed ball in the intestine and may cause obstruction, digestive disturbances including constipation, mild diarrhea and dysentery. Animal occasionally move in circle and show masticatory movement of jaw. In horses, enlargement of belly and symptoms of colic may appear. Rx: Albendazole @ 10 mg/kg for horses; Praziquantal @ 1 mg/kg

Coenurosis Syn: Gid, Sturdy This condition is caused by invasion of the brain and spinal cord by the intermediate stage (i.e. coenurus cerebralis) of cestode “Taenia multiceps” which inhabits the intestine of dogs and wild canidae (intermediate hosts). Disease can occur in sheep, goat, cattle, horses and wild ruminants. Clinically it is primarily a disease of sheep and occasionally cattle. Clinical Findings: Ataxia, Muscle tremor, Excitability and Collapse. The most obvious sign in slowly developing partial or complete blindness in one eye. Dullness, Head pressing, incomplete mastication, and periodic epileptiform convulsion are the usual signs. If the cyst is present on the spinal cord, there is gradual development of paresis and eventually inability to rise. If cyst is in brain then there is deviation of head and circling. The neurological signs are referred to as “Gid or Staggers”. Diagnosis: On the basis of signs and particularly characteristic gid movement Rx: Surgical drainage of cyst

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Haemonchosis in Ruminants Syn: Barber pole disease It is one of the most pathogenic blood sucking nematodal infestation of sheep gat and cattle. It occurs in the forestomach (abomasum) of the above animals. Etiology: Haemonchus placei; in cattle (10,000 eggs per day) Haemonchus contortus; in sheep and goat Life Cycle: Eggs in feces --- > hatch in favorable condition (27 C – 36 C) and high moisture --- > After 1st and 2nd stage, 3rd infective larval stage come out --- > ingested by the animal while grazing --- > become adult in abomasum. No intermediate host. It is more common in hot and humid season. Clinical Findings: Acute form of disease is found in lambs and young sheep. There is loose bloody diarrhea; mucus membrane and conjunctiva are extremely pale due to severe anemia.

VETERINARY MEDICINE Rx of acute mastitis: Udder infusions: For lactating: Ampicillin + Na-cloxacillin For dry animals: Benzathin + Cloxacillin For G-ve bacteria: Furazolidone in procaine penicillin

Modern Rx of mastitis

TMP + Sulphadiazine Penicillin G intramammary for 5 days at evening

Hemorrhagic Septicemia (H.S)

Syn: Barbone Spp affected: Cattle, buffalo, swine, sheep It is an acute, subacute infectious disease of septicemic nature, which is characterized by i) Acute gastroenteritis ii) Subacute edema iii) Serifibrinous pleuropneumonia iv) Edema of intra-alveolar tissues Causative agent: Pasteurella spp., P.boviseptica (Cattle), P.bubalospetica (Buffalo) PM lesions: Subacute edema of head, neck thorax, and throat. Serofibrinous exudate in the subcutaneous tissues of the head, neck throat dewlap and thorax. Edema of buccal and pharyngeal mucosa. Swelling of tongue. Hemorrhagic gastroenteritis. Petechial hemorrhages on tissues and membranes. Enlargement of lymphatic glands. Hemorrhagic endocarditis and serofibrinous pericarditis. Pectoral or thoracic form: Thoracic cavity contains serous or sero-fibrinous exudate. Visceral pleura studded with hemorrhages. Lungs are edematous Clinical sings: Temp up to 106 F, constipation --> thin fluid containing flakes and blood mucus or fibrin. Head, neck, thorax, dewlap are swollen, hot, tense, and painful. Buccal membrane is edematous and tongue swollen, rendering deglutition difficult. Laboured respiration. Death from asphyxia or exhaustion due to the severe gastroenteritis. 53

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Pneumonic form: Prostration, Drooping ears, Congested hemorrhagic mucosa, Protruded tongue, Open mouth, Sever dyspnoeae. Rx: i) OTC, IV @ 1 mg/kg bwt for 3 days ii) Chloramphenicol, IV @ 10 mg/kg bwt 3 times for 3 days iii) Penicillin dihydrostreptomycin @ 30,000 IU, IM for 3 days iv) Sulfamethazine @ 150 mg/kg bwt IV for 3 days v) Ampicillin @ 10 mg/kg bwt, every 24 hours Mass Medication: a) Sulfamethazine @ 100 mg/kg bwt in drinking water daily for 7 days b) OTC @ 3-5 mg/kg bwt in cattle feed for 7 days H.S Vaccine produce immunity for 2 months. Bipolar organism and does not release exotoxins. Most susceptible age is 6 mo to 2 years

Tetanus Rx: i) ATS @ 30,000 IU, IM, 3 times or after every 12 hrs ii) ATS @ 5000 IU in subrachnoid space once iii) Largactil (Chlorpromazine), IM iv) Procaine penicillin @ 50,000 IU, IM v) Benzyl penicillin @ 50,000 IU, IV In calf, tetanus vaccine should be adopted first in 2 ½ month of age and breed in 3 month of age.

Black Leg

Syn: Black quarter, Myonecrosis Causative agent: Clostridium chauvoie; G +ve anaerobes, normal inhabitant of GIT and soil. Species affected: cattle, sheep, goat, horses. In cattle, the microorganism is endogenous but in sheep and oat, it enters by shearing and tail docking. It causes edematous swelling of muscles of neck, shoulder, back, gluteal muscles (myonecrosis or gangrenous necrosis) with crepitating sounds and foul odour from the necrotic areas. There are two toxins; alpha toxin and beta toxin. Disease is characterized by myonecrosis, acute lameness, rising fever, muscle tremors, and ultimately death of the animal. Autolysis proceeds rapidly. Rx: Procaine penicillin, IM @ 40000 IU repeat after every 6 hours. Benzyl penicillin IV @ 45000 IU repeat after every 4 hours. Vaccination: Clostridium chauvoie killed vaccine can be used.

Botulism

Syn: Forage poisoning, Shaker foal syndrome It is caused by Clostridium botulinum type D. Forage spoiled, spoiled food, hay spoiled in humid environment. Organism produce toxins that paralysis “motor paralysis”. Paralysis of masticatory, perineal muscles, tone of GIT also decreased. Animal becomes recumbent. DDx: Tetanus Rx: Botulinum toxoids are available

Enterotoxemia

Syn: Pulpy kidney disease Etiology: It is caused by Clostridium perfrigens type D, G +ve organism Signs: Clinically, high fever, diarrhea (pasting of hind quarter), Mostly affects lambs, kids and calves. Lush green fodders, grains, highly milk feed are pre-disposing to this disease. The toxins are produced in the intestine and absorbed in blood. The kidney becomes pulp like so called “pulpy kidney” because organism affects the kidney and causes necrosis of glomeruli. Glucosurea, high fever, diarrhea, convulsion and death within 2 to 4 hours. The organism causes sloughing of the intestine and diarrhea.

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Rx: Penicillin, OTC (orally @ 10 mg) Vaccination: 1st at 3 months, 2nd at 4 months, 3rd repeat twice a year. Dam vaccination: 2 month before parturition.

Bacillary Hemoglobinuria It is caused by Clostridium hemolyticum Signs: Clinically high fever, hb-urea, dysentery, acute abdominal pain, dyspnoea. Cattle and sheep are mostly affected. Organism releases toxin “phospholipase C” a beta toxin Abdominal pain is due to necrosis of intestinal epithelium. Severe anemia is de to loss of blood from urine and faeces. Rx: Penicillin, OTC Important Note: Deworming with Triclabendzole to kill the liver flukes because liverflukes provides the anaerobic conditions.

Malignant Edema

It is caused by “Clostridium septicum”. Wounds are source of infection. Malignant edema in sheep is called as “Braxy or big head” because of edema on head. Malignant edema should be differentiated from black quarter on the basis of gas gangrene in BQ. Rx: Penicillin, OTC, and washing of wounds with hydrogen peroxide (H2O2).

Anthrax

Syn: Splenic fever, Wool sorter’s disease Anthrax is an infectious, septicemic, zoonotic disease which is caused by a Gram +ve rod shaped bacteria which can be killed by steam sterilization or burning. Pathogenicity is due to four factors; (i) Lethal factor (ii) Edema factor (iii) Protective antigen (iv) poly-n-glutamate capsule. This capsule has activity to prevent the phagocytic engulfment. Edema factor has edema producing activity. Lethal factors are lethal to leukocytes especially phagocytes. Protective antigen is the binding domain of the anthrax toxins. A combination of all these factors causes anthrax. Clinical Signs: (a) Sudden death (b) High fever, Ruminal stasis, Hemoglobinuria, Bloody diarrhea, Bloody milk, Dyspnoea, Collapse. (c) Sever colic and bisket edema in horse (d) Splenic fever (i.e. spleen is enlarged, dark black in color. Anthrax is a Greek word; mean “Coal” – dark color of lesions and blood. Anthrax vaccine: Stern strain (a non-capsulated toxigenic strain) Source of anthrax: (i) alkaline soil (ii) Contaminated animal byproducts (skin hides, bones and wool) Forms of Clinical Disease: There are three forms of disease; (a) cutaneous (there is formation of papules, vesicles and pustules) (b) pulmonary form (c) intestinal form

Actinobacillosis

Syn: Wooden tongue A disease of zoonotic importance Etiology: it is caused by; Actinobacillus ligneresii; Gram –ve rods. The causative agent penetrates through abrasions of the mouth. Disease is characterized by pyogranulomatous lesions on the tongue, gums, palate, and associated lymph glands. There is sulphur granules formation. Wooden tongue is the disease of cattle and sheep. Rx: (i) Na-iodide, IV @ 1 gm / 12 kg bwt (ii) Washing with tinc. Iodine and glycerin. 55

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

(iii) Penicillin can also be used.

Actinomycosis

Syn: Lympy jaw Causative agent: It is caused by “Actinomyces bovis”. It is caused by wound disease involving bones especially of maxilla and mandible. In maxilla lesions, there is suppurative ostitis.

Listeriosis

Syn: Circling disease Causative agent: It is caused by “Listeria monocytogenes” which is acquired through contaminated silage. Clinically it is characterized by encephalitis, meningitis, enteritis, abortion in last trimester and uveitis/opthalmitis. Microabscesses in encephalitis is characteristic feature of this disease. It has zoonotic impact and effect mainly sheep and then other ruminants. Rx: Cholortetracycline or penicillin, IV is very effective. DDx: (i) Scrapie (ii) Gid (iii) Polioencephalomalacia

Paratuberculosis

Syn: Johne’s disease Causative agent: It is caused by “Mycobacterium paratuberculosis”. It is a chronic, progressive and diarrhoeal disease. It effects all the ruminants especially newborn calves, and young animals but the clinical disease occur over 2 years. Clinically watery diarrhea, emaciation and weight loss. The organism has long incubation period and disease remain subclinical and organisms shed through feces and milk. Rx: (i) Streptomycin @ 50mg/kg IM (ii) Isoniazid @ 20mg/kg IM Vaccination: Vallee’s vaccine is used Johnin Test: In this test, organism causes delayed type of hypersensitivity reaction. Inject Johnin extract I/D. If it will increase thickness, indicates positive case.

Tuberculosis

Causative agent: It is caused by “Mycobacterium bovis” – A zoonotic disease It is also called chronic debilitating disease. Body weight loss, weakness, anorexia, generalized emaciation, low grade fever. In pulmonary form, chronic intermittent cough, dyspnoea, Tachypnoea. Lesions are called “tubercles”. In advanced cases, all the lymph nodes may contain tubercles granulomatous lesions. Rx: Sreptomycin, Isoniazid, and Paraminosalvic may be used for treatment. Tuberculin Test: is used for diagnostic and screening purpose. Inject 0.05 ml tuberculin intradermally (I/D). +ve case is indicated by increased thickness of the skin.

Glanders

Causative agent: Pseudomonas mallei – an obligate parasite and live in the host. The disease is acute in ass, subacute in mule, and chronic in horse. Horses acquired infection by ingestion and inhalation. The organism deposits in lymphatic tissues. In pulmonary tissue, it first forms microscopic inflammatory foci, then macroscopic nodules, then larger, chronic granuloma + diffused interstitial pneumonia accompany this process.

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

At any point during these events, organisms go to air ways -- > upper respiratory tract -- > produce nodules in nasal cavity --- > nodules rupture to produce characteristic punched out ulcers -- > ulcer discharge a gluey, purulent exudate -- > congested and hemorrhagic mucus membrane of the nasal cavity. Bacilli also infect the tissues of limbs where they give rise to “Farcy”. Farcy comprises a “chronic lymphangitis” (Farcy cords) and “Lymphadenitis” (Farcy buds). These lesions rupture to produce purulent exudate. In occult glander, the pulmonary lesions are provoked by stress -- > leading to disseminate in the body and release to the exterior. Mallein Test: Inject intradermally mullein reagent in eyelid. Swelling of eyelid within 24 hours confirms the positive case of glanders.

Strangles

Causative agent: “Streptococcus equi” Strangles is a suppurative lymphadenitis of head and neck of horses. Disease is common and sever in young horses and foals. S. equi is transmitted when discharges from nose or abscesses contaminate food and water, when affected foals suckle the mammary glands, direct nose to nose also transmits. Pathogenesis: Mouth/nose -- > Lymph nodes -- > all is found in one or more lymph nodes that drain the pharyngeal/tonsillar region. Failure of phagocytosis is due to (i) M protein (ii) Hyaluronic acid (iii) Leukocidal toxins. Incubation period is 13 to 14 days. Clinically, it is characterized by onset of sudden fever (40C), loss of appetite, halitosis, difficulty in swallowing, intermittent cough, extension of head and neck, swelling in the submandibular and a supralaryngeal areas, nasal discharge, inflammation of lymphoid nodules of soft palate and tonsillar areas. After 3-5 days swelling in the intramandibular or suprapharyngeal areas may increase because of lymphostasis and enlargement of affected lymph nodes. The occlusive effect of lymph node enlargement is the source of disease description “Strangles” – Suffocation. Sometimes abscesses in affected lymph nodes rupture. Suprapharyngeal abscesses drain into pharyngeal area resulting in a copious flow of purulent material. This drainage into guttural pouch matastasis of purulent material result in abscess formation in other locations such as lungs, brain, thoracic and abdominal lymph nodes. This is called “bastard strangles”. The second complication during and after recovery is purpura haemorrhagica; which is an immune complex mediated vasculitis that occurs at 2-4 week, paralysis of left recurrent laryngeal nerve and anemia occurs. Rx: (i) Penicillin (ii) Abscess drainage (iii) Fly repellent (iv) Corticosteroids (for purpura hemorrhagica).

EQUINE DISEASES (a) Viral Diseases (i) Equine influenza (ii) Equine rhinovirus --- > upper respiratory tract (iii) African horse sickness (Genus: orbivirus) --- > respiratory/circulatory (iv) Vesicular stomatitis --- > vesicles on foot and mouth (v) Equine infectious anemia (Family: Retroviridae, Genus: Lentiviru) HIV like (b) Bacterial Diseases (i) Tetanus --- > Clostridium tetani (ii) Anthrax ---- > Bacillus anthracis 57

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

(iii) Strangles ---- > Streptococcus equi (iv) Glanders ---- > Pseudomonas mallei (v) Contagious equine metritis --- > Taylorella equigenitalis (vi) Mastitis --- > Streptococcus zooepidermicus (c) Parasitic Diseases Parasite Specie Adult site Long strangyles Strongylus vulgaris Large intestine Triodontophorus spp. Large intestine Small strangyles Trichonma spp. LI Round worms Parascarus equinum SI Thread worms Strongyloides westerni SI Lung worms Dictylocaulus spp. Respiratory age Pinworms Oxyuris equi LI Tapeworms Anoplocephala spp SI / LI Bots Gastrophilus spp. Flies in environment

Larva site Arteries/ liver Intestinal wall Intestinal wall Liver, lung Lung Lymphatics Intestinal wall --Stomach

Colic Abdominal pain; visceral pain

Types of Colic i) Spasmodic coli: Increase in peristaltic movement and spasm occur. Intermittent bouts of pain with period of relaxation. ii) Impactive colic: Impaction of bowl with dry and partial digested feed contents, bowl lumen distended and its motility reduced. There is continuous pain. iii) Obstructive colic: age of ingesta is obstructed either due to torsion or intussusceptions. There is continuous pain. iv) Flatulent colic: It is also known as intestinal tympany or tympanitis. There is distension of bowl lumen due to gas accumulation v) Idiopathic colic; No obvious cause or lesion is found.

PROTOZOAL DISEASES Trypanosomiasis Nagana Caused by Trypanosoma congolense, It is transmitted by tsetse flies. Signs: intermittent fever, anemia, weight loss, edema of limbs and genitalia. Surra Caused by Trypanosoma evansi. It is transmitted by biting flies. Sings: same as above + progressive paralysis of hindquarter in chronic cases. Dourine: Caused by Trypanosoma equiperdum. It is transmitted by coitus [mating] Signs: Genital and ventral edema, progressive emaciation, ascending motor paralysis.

Babesiosis

Caused by B. equi and B. caballi

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

DDx: Equine infectious anemia, Equine viral arteritis, Purpoura hemorrhagica.

Immunological Disorders i)

Severe combined immune deficiency (SCID); its hereditary It is caused by EHV-I in which immuno-suppression can occur.

Vaccines for Horses i) ii) iii) iv)

Influenza vaccines EHV-I Tetanus [Clostridium tetani] Strangles

DDx of Cattle Diseases in which Redwater Comes: (i) (ii) (iii) (iv) (v) (vi) (vii)

Enzootic hematuria: Grazing “Broken” There is hematuria with no pus. Enzootic bovine pyelonephritis: Intermittent hematuria, + pyuria caused by “Corynebacterium renale” in cattle. Babesiosis: Fever 41 C Postparturient hemoglobinurea: Low phosphate or low copper diet [no temperature increase from normal] Bacillary hemoglobinurea; Diarrhea + Abdominal pain + Fever 41 C. Mortality is 100 %. Leptospirosis: Caused by L. pomona. Mostly calves are affected. There is mucosal petechiation. Chronic copper poisoning: Hemoglobinurea, acute death

LIST OF DRUGS USED IN VETERINARY MEDICINE ANTIPROTOZOALS Babesiosis: Imidocarb @ 3mg / kg bwt Diminazine @ 3-5 mg/kg bwt S/C Quinuronium sulphate [Acaprine, Babesan] @ 0.4 mg/kg bwt Tryan Blue [Fresh] @ 1-4 gm / kg bwt Trypanocidals: Suramine [Antrypol] @ 10 mg/kg bwt Diminazine @ 8 mg / kg bwt S/C Anti- Giardia, Amoeba, Blantidtium, Trichomonas: Metronidazole; in canine dysentery @ 50 mg/kg wt orally for 5 days In bovine trichomoniasis: @ 75 mg/kg bwt IV 3 times a day Anitcoccidals: Suplhaquinoxalone Amprolium ANTIPARASITIC Ascaricidals: Piperazine Against Roundworms: Thiabendazole Broadspactrum Antiparasitic: 59

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Albendazole, Fenbendazole, Mebendazole, [Benzimedazole] Tetramizole Levamisole Pyrental pamoate [Combantrin] Against Nematodes, Ectoparasites and Heartworms: Ivermectin Taenicidal: Niclosamides Flukicidals (Against Liver Fluke]: Oxyclosanide @ 15 mg /kg bwt orally Broodicidal: Preziquantal @ 5 mg/kg bwt for cat/dog mostly ANTIFUNGALS Nystatin [Against Streptomyces Neursei] Griseofulvin [ Against Penicillium spp] Synthetic: Coltrimazole Amphotericin B Ketokenazole ANTIVIRALS Cyclovir Acyclovir Amantadine Ribavirale [Against Hepatitis B & C viruses] RESPIRATORY STIMULANTS Nikthamide Amphetamine Sulphate ANEMETICS Dimenhydramine Diphenhydramine Cyclizine Meclizine EMETICS Apomorphine Conc. HCl solution ECBOLICS [Uterine Contractors] Oxytocin PGF2 alpha [Dinoprost] DIURETICS Furosemide [Lasix] Mannitole

HELMINTHOLOGY Study of HELMINTHS Helminthology; consists of Study of (i) Platyhelminthes: [Flukes, Tepworms, Flateworms] (ii) Nemathelminthes [Roundworms]

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Platyhelminthes are hermaphrodite. These include: (a) Trematodes (b) Cestodes Nemathelminthes includes: (a) Nematodes Nematode Round worm Spindle shaped No segment Unisexual Alimentary canal present

Trematode Flat worms Leaf shaped No segment Hermaphrodite Present

Cestode_____ Tapeworms Ribbon shaped Segmented Hermaphrodite Absent

Trematodes: [Flatworms]

(i) Fasciola hepatica: [Liver fluke] snail is intermediate host. Condition is known as Bottle jaw (edema in intermandibular space) (ii) Fasciola gigentica: (iii) Schistosoma japonicum: lives in mesenteric and portal vessels of man and animals. Causes Hematuria.

Cestodes: [Tapeworms] (i) (ii) (iii) (iv) (v) (vi)

Raillietina tetragona Dipylidium caninum (common tapeworm of dogs) Hymenolepis nana (dwarf tapeworm of dogs) Taenia solium Taenia saginata Echinococcus granulosis; form the hydatid cyst

Nematodes: [Roundworms] (i) (ii) (iii) (iv) (v)

Ascarus lumbricoids Parascaris Oxyuris equi Toxocara vitulorum Strongyloides : palisade worms Haemonchus contortus; stomach worm or wireworm of ruminants (vi) Dictylocaulus pilaria [Lungworms]: in bronchi of sheep (vii) Habronema: cutaneous habronema is also called “summer sores” or Bursati or “Granular dermatitis”; habronema larvae (viii) Dicrofilaria immitus [Heartworms]; occurs in dog and cat, and right ventricle of fox, and there is pulmonary stasis.

Nematodes in Blood Exam a) Dirofilaria immitus; Heart worm of dog, cat and fox b) Dipetalonema reconditum; S/cut worm of dog c) Stearia cervi; Peritoneal worm of cattle.

CESTODES 61

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Sexually mature form found in intestine of vertebrate Segmented body, segment called proglottid Larvae; 6 hooked larvae called hexacanth Intermediate host; vertebrate and intervertebrate Head is termed scolex

Larval Forms

Also called metacestodes Non-budding forms a) Procercoid (1st larval stage in arthropod) b) Plerocercoid c) Cysticercoid d) Cysticercus e) Strobilocercus f) Coenurus g) Hydatid

ENTOMOLOGY i. Insects; Lices etc ii. Arachnids: Ticks & Mites INSECTS (1) Lices: (a) Hematopinus suis; Pig sucking lice (b) Haematopinus eurysternus: Cattle lice (c) Lignocanthus vituli: Long nose cattle louse (2) Bugs: (a) Cimex lecturalis; Bed bug (3) Beetles (4) Fleas (a) Pulex irritans (5) Biting midges or Punkies and Flies (a) Mosquitoes (b) Black flies or buffalo gnats (c) Sand flies (d) Horse flies; involve in the transmission of causative agents of anthrax, equine infectious anemia, Surra, Nagana. (e) Common house flies: involve in the transmission of causative agents of typhoid fever, cholera, tuberculosis, dysentery, anthrax. (f) Stable flies; Blood suckers e.g. Stomoxys; involve in transmission of habronema, equine infectious anemia, anthrax. (g) Buffalo flies (h) Horn flies (i) Tsetse flies; causes Sleeping sickness of man and Nagana (j) Blow flies (k) Blue bottle flies

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

(l) “Strike” by Lucilia, Calliphora, Phormia. - Callitroga causes myasis of man and is called screwworms - Tumbu flies - Sarcophaginae: Flesh flies - Gastrophilus: Horse bots - Oestrus ovis: Sheep nasal fly; Called as “False Gid”. - Hypoderma; Ox warbles ARACHNIDS (1) Mites (2) Ticks (a) Argus persicus (Fowl tick); causes Tick paralysis and transmits Borrelia ancirina (Spirochaetosis). (b) Spinose ear tick (c) Eyeless tampans; live in sands under trees. (d) Hard Ticks [Ixodes] Ixodes recinus transmits red water; caused by Babesia divergens and B.bovis or B.bigemina Hard ticks are involved in: - Tick borne fever of sheep - Viruses of loping ill - Coxiella burnetii - Tick paralysis - Staphylococcus aureus - Anaplasma marginale - Spirochaetosis - Canine pirpoplasmosis [Rephicephalus sanguinus] - Redwater billiary fever [Babesia equi] Dermacenter reticularis (in Asia) Transmits Babesia spp.

Protozoal Diseases (1) (2) (3) (4) (5) (6)

Babesiosis: Red water fever; caused by B.bovis, B.bigemina Anaplasmosis: rickettsial disease caused by A.marginale& A.ovis(Sheep/Goat Coccidiosis: Caused by Eimeria bovis, E. arloingi (sheep & goat) Toxoplasmosis: Caused by Toxoplasma gondii Dourine: Caused by Trypanosoma equiperdum Surra: Caused by Trypanosoma evansi

Babesiosis [Redwater fever] Caused by B.bovis and B.bigemina (Intra-erythrocytic Protozoa) Mostly Cattle, buffalo, sheep and horses are affected. Transmitted by ticks as following: - Boophilus microphilus - Rhiphicephalus spp. - Dermacenter spp. - Ixodes ricinus Characterized by Anemia, Jaundice, Hemoglobinemia, Hemoglobinurea, and ultimately Death of the animal due to anemic anorexia. 63

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

This intra-erythrocytic parasite causes intravascular hemolysis. Diseases is transmitted by ticks, and mostly found in high temperature, humidity and rain fall zones of the world. Incubation period of disease is 2 o 3 weeks. Signs and Symptoms: Anorexia, Depression, Cessation of rumination, Decreased milk production, Weakness, Membranes are pale.

Anaplasmosis

Caused by Reckettsial agent “Anaplasma marginale” in Cattle and “Anaplasma ovis” in Sheep and Goat. Clinical disease is in cattle and subclinical in sheep and goat. Signs are same as that of babesiosis but hemoglobinurea is absent in anaplasmosis. Long incubation period as compared to that of babesiosis: about 1 to 5 weeks. It is also a tick-borne disease. Treatment: Oxytetracycline @ 6-10 mg/kg bwt

Toxoplasmosis

Zoonotic problem Caused by “Toxoplasma gondii” It is a contagious disease of all species including man. Clinically it is manifested chiefly by abortion and still birth in ewes and in all other species with encephalitis, pneumonia and neonatal mortality. Treatment: Sulfadiazine

Dourine

It is a contagious disease transmitted by Coitus. Characterized by inflammation of external genitalia, cutaneous lesions and paralysis.

PROTOZOAL DISEASES Babesiosis Syn: Tick fever, Piroplasmosis Etiology: Babesia bigemina, and Babesia bovis Transmission: by Ticks esp. of spp. Boophilus Hosts: Cattle is the most common. Others are buffalo, sheep and horse Pathogenesis: Multiplication in peripheral blood vessels --- > intramuscular hemolysis Clinical Signs: High fever, Hemoglobinurea, Anorexia, Conjunctival mucus membrane is brick red colored in initial stage but pale in later or terminal stages. There is low PCV [packed cell volume] value due to hemolysis of RBCs. Treatment: (i) Imidocarb dipropionate (ii) Diminazine (iii) Oxytetracycline

Theileriosis

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Syn: East cost fever, Red water disease Etiology: Theileria parva and Theileria annulata Transmission: by Ticks esp of Hyalamma Specie Hosts: Mostly Cattle Clinical Signs: High temperature, Enlargement of regional and superficial lymph nodes, Tense ball like eyes with watery lacrimation. Nasal secretions also come out.

Trypanosomiasis

Syn: Surra – in horses, Pheta – in camels Etiology: Trypanosoma evansi Transmitted by Biting flies (Tabanus flies) In human, it causes sleeping sickness Clinical Signs: Intermittent fever, Sever petechial hemorrhages on serosal membrane and lymph nodes Spleen is swollen, Anorexia Diagnosis: wet stained blood smear is used for under microscope diagnose of parasite. Treatment: Surramine, Cymelarsen.

Dourine

It is a venereal disease Etiology; Trypanosoma equiperdum Host: Horses Clinical Signs: Gross edema of genitalia, Mucopurulent discharge from urethra, vaginal discharge in females Treatment: Quinapyramine sulfate

POULTRY DISEASES DISEASES OF CHICKEN CORRELATED WITH AGE BROILERS, PULLETS, LAYERS Typical losses to 7 weeks of age are 4-5%. Losses in the first two weeks for 30-50% of total mortality. BROODING PERIOD (0-2 Weeks) 1. Mortality a) Management b) Starvation/ dehydration – floor temperature, water management c) Navel and yolk sac infection: Salmonellosis, E.coli, Staphylococcus, Proteus etc. d) Vaccine contamination e) Improper incubation conditions: small, weak hatchling or increased susceptibility to infections. 65

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

2. Respiratory disease a) Aspergillosis (Brooder pneumonia) b) Vaccine problems (Respiratory reaction) 3. CNS Disease a) Avian Encephalomyelitis b) Encephalomalacia c) Poor vaccine placement (Pox, MDV) d) Spiking Mortality 4. Nutritional Deficiencies a) Rickets b) Others 5. Eye diseases a) Ammonia burns b) Mycotic Keratoconjunctivitis GROWING PERIOD (2-8) 1. Mortality a) Coccidiosis b) Aspergillosis c) Ascites d) Marek's disease e) Clinical infectious bursal disease (IBD) f) Inclusion body hepatitis / Aplastic anemia g) Ulcerative enteritis h) Necrotic enteritis i) Chicken infectious anemia j) Gangrenous dermatitis k) Blackhead 2. Respiratory disease a) Mycoplasmosis b) Newcastle disease c) Infectious bronchitis d) Infectious laryngotracheitis e) Colisepticemia f) Avian influenza 3. Lameness a) Tibial dyschondroplasia b) Long bone distortion (Valgus-varus deformaties) c) Infectious synovitis d) Bumblefoot e) Viral arthritis f) Osteomyelitis g) Staphylococcosis/ Other septic arthrides h) Spondylolisthesis i) Rickets j) Ionophore/ 3-Nitro-toxicity 4. Skin disease a) Gangrenous dermatitis b) Fowl pox c) Exudative diathesis

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

d) Skin leukosis 5. CNS disease a) Avian encephalomyelitis b) Nutritional encephalomalacia c) Newcastle disease d) Marek's disease 6. Others a) Roundworms b) Toxicities - Mycotoxin, Botulism, Ionophore, 3- Nitro, etc. c) Crop Mycosis d) Cellulitis e) Swollen head syndrome f) Inflammatory process g) Immunosuppression – IBD, CIA

PULLET PERIOD (8-20 weeks) 1. Neoplastic diseases a) Marek's disease b) Avian leukosis 2. Respiratory diseases a) Infectious coryza b) Infectious laryngotracheitis c) Mycoplasmosis d) Infectious bronchitis e) Newcastle disease f) Avian influenza 3. Systemic diseases a) Fowl cholera LAYERS (>20 weeks) 1. Neoplasia a) Lymphoid luekosis b) Carcinoma c) Sarcoma d) Marek's disease 2. Respiratory diseases a) Newcastle disease b) Avian influenza c) Infectious bronchitis d) Mycoplasmosis e) Infectious coryza f) Laryngotracheitis 3. Egg production drops a) Newcastle disease b) Avian influenza c) Avian encephalomyelitis d) Infectious bronchitis e) Mycoplasmosa gallisepticum f) Infectious coryza 67

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

g) Nutrition / Management 4. Salpingitis / Peritonitis 5. Cage layer fatigue 6. Fowl mites 7. Fatty liver hemorrhagic syndrome 8. Parasitism: Capillariasis, Heterakis, Roundworm etc. 9. Uterovaginal prolapsed 10. Fowl cholera

SPORADIC DISEASES 1. 2. 3. 4. 5. 6.

Tuberculosis Botulism Streptococcosis Arbovirus infection Pullorum/Typhoid Other parasitic diseases

Infectious Bursal Disease [IBD]

Syn: Gumboro Etiology: Birnaviridae Mostly young birds of 6 weeks age are affected. Broiler less affected than layers. At early age, bursa of fibricious does not produce B-cells – immunosuppression Disease span is: 6-7 days. Morbidity may reaches up to 100% Clinical Signs: Birds sit with closed eyes and are unable to stand, drink and eat. Whitish or yellowish diarrhea on vent -- > bird pick their vent -- > blood mixed diarrhea -- > shivering Lesions: Dehydration is noted by shrunken lesions on legs, claws and ts are visible. Hemorrhages on thigh and pectoral muscles. Bursa of fibricious swollen -- > yellow exudate Opening bursa, hemorrhages and exudate Kidney suffer from nephrosis -- > swollen and large Spleen becomes enlarged Treatment: No specific treatment Diuretics, Sugar in water to provide energy

Newcastle Disease (ND)

Etiology: Avulavirus (Family Paramyxoviridae). ND virus is of three types depending upon pathogenecity. Velogenic: Highly pathogenic – 100% mortality Mesogenic: Intermediate pathogenic – mostly affect young birds Lentogenic Produce subclinical signs only in young birds No vertical transmission because infected eggs do not hatch. Clinical Signs: Increased respiration – fluid from nostrils Mouth paralysis -- > increased temperature Greenish diarrhea --- > Opisthotoc torticollis Wings drop --- > lame bird

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Lesions: Hemorrhages on ventricular surfaces, caecal surface, serosa of the intestine and gizzard. Petechial hemorrhages ulcers on intestine In caecum, caecal tonsils become congested. Congestion in trachea Vaccine: Valogenic --- > Rockin strains Mesogenic --- > Mukteswar strains Lentogenic --- > Lasota strains

Avian Influenza

Syn: Fowl plaque Etiology: Orthomyxovirus; three types of virus A, B, C Two antigens; HA (Hemagglutinin) NA (Neuraminidase) No vertical transmission Clinical Signs: Mild respiratory signs, sneezing. Swelling of head and face. Diarrhea. Lesions: Congestive, hemorrhagic necrotic changes in skin. Hemorrhages on digestive tract. Vaccination: No vaccination because there is frequent mutations.

PROTOZOA Entamoeba histolytica; causes amoebic dysentery in man, dog, cat etc. Entamoeba coli: affects man, dog, pig and other primates. Sarcocysts spp.; found in striated and heart muscles Cooccidiosis: There are 3 pathogenic genera: i) Isospora ( 2 sporocyst and each have 4 sporozoites) ii) Eimeria (4 sporocyst and each have 2 sporozoites) iii) Tuzzeria (8 free sporozoites) Eimeria: affect sheep, goat, cattle, buffalo, cat, horse and poultry. Chicken: E. tenella (Cecal cocci), Intestinal cocci (E.brunetti) Cattle: E. bovis, E. zuerni Dog: Isospora Toxoplasma gondii Affects rodents, cat and dog. Affects brain, heart, liver, lung and spleen. Plasmodium Mammals, reptiles, and birds In erythrocytes and endothelial cells of inner organs Vector: Culex (birds), Anopheles (Mammals) Leishminia Man, dog, rodents, guinea pig Found in macrophages, reticuloendothelial cells. Vector: Sand fly, phelbotomus and lutzomyia Species: L.braziliansis, L.chagasi, L.maxicana, L.donovani 69

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Trypanosomiasis Parasites of circulatory system and tissue fluid Vector: Tsetse fly of Glossina species Stercorarian: spread via faeces Salivarian: spread via saliva Species: T. evansi, T. gambience, T. bruci, T. cruzi, T. equiperdum Diseases: i) Surra ii) Chagas disease iii) Sleeping sickness iv) African trypanosomiasis v) Dourine

VIRAL DISEASES Blue Tongue

Caused by orbivirus Primiraly disease of sheep Spread by flies (culicoides) and mosquitoes (ades) and tick (ornithodorous) Characteristic stomatitis, rhinitis, and lameness Clinical signs: Increased body temperature (105-106 F), sneezing, coughing, salivation, redness of nasal mucosa, nasal secretion, blood tained frothy, saliva, edema of gums, ulcer formation at border of tongue, lesions of foot (coronitis + laminitis), wry neck (head toward side lacrimation).

PPR (Peste Des Petitis Ruminants)

Syn: Goat plaque, KATA, Caused by Morbillivirus, family Paramyxoviridae Clinical Findings: Acute: Goat, 106-107 F, purulent nasal discharge, necrotic lesion in mouth, swollen lips, profuse diarrhea, coughing, dyspnoea, pneumonia Sub-acute: sheep die in 24 hours, less signs are evident

Scrapie

Caused by Infectious proteinacious particles which are very strong stay against boiling Characterized by pruritis, abnormal gait, mostly chronic. Causes vaculation of neurons in spinal cord, pons, mid brain etc. There are tremors, locomoter disorders, pruritis, change in behavior, hematoma on ear and swelling of face. Scrapie scratch reaction: Nibbling, licking, abnormality of gait

Tropical Theileriasis Protozoal disease Caused by Theileria parva Transmitted by tick of spp Rephiciphalus Hence, life cycle involves 2 hosts

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Clinical Findings Generalized swelling of draining LN throughout the body, fever, anorexia, depression, dullness, corneal opacity. Rx: OTC @ 20 mg/kg

Anaplasmosis

Rickettsial/protozoal disease Caused by Anaplasma centrale (more severe) Anaplasma marginale (less severe) Transmitted by ticks spp. of Boophilus, Ixodes, Rephicepalus and Hyalomma Clinical findings: Fluctuating fever, pale mucous membrane, yellowish urine, jaundice, pregnant animal may abort, decrease in milk production, emaciation. Rx: OTC @ 20 mg/kg, and Imizole @ 2-5 ml/100 kg

BACTERIAL DISEASES Mastitis

Inflammation of mammary glands (udders and teats) Characterized by changes in udder and milk composition (physical, chemical, bacteriological), neutrophils in milk increase. Major pathogens: Staph aureus, Streptococcus aglactiae, E.coli (70% contribution by first two agents) Minor pathogens: Pseudomonas, fungal agents (aspergillus, yeast), corynebacterium Less in buffalo but more severe (sphincter is tight) 48% decrease in milk yield during production, also medical changes. Phases: Invasion, Infectious, Inflammation Tests: California milk test (CMT), Surf field milk test (SFMT) Abnormalities in udder: Diffused --- > localized -- > fibrosis --- > gangrene Abscess formation in calves, atrophy Rx: Inj. Gentamycin, Enrofloxacin, Oxytetracycline, Intramammary – Procaine penicillin (400000 IU) + 30 ml distilled water + 1 ml steroid in non-preg. animal + merocin (fibrolytic agent) 1 ml.

Contagious bovine pleuro-pneumonia (CBPP)

Caused by Mycoplasma mycoids – small colony Large colony caused CP (Contagious caprine pleuro-pneumonia) Affect pleura + lungs Peracute: Sudden death is observed Acute: High temperature/fever (107 F), This infection may be sub acute Rx: Tylosine is more effective 71

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Tick pyemia of lamb Enzootic – Staphylococcus Transmitted by ticks of Ixodes spp. Affects lambs of 2 to 10 week age It may cause sudden death

Contagious bovine pyelonephritis

Caused by Corynebacterium renale Affects kidneys, and upper urinary tract Clinical findings: Hematuria, colic signs, forceful urination, pyouria, depression, decrease milk production Rx: Penicillin is the drug of choice

Caseous Lymphadenitis

Caused by Corynebacterium paratuberculosis (intracellular parasite of monocytes/macrophages). External abscessation of lymph nodes (initially pus is greenish, but latter on calcification gives onion appearance to abscess and can distinguishable) Internal abscessation (liver, intestine, brain and spinal cord)

Anthrax

Syn: Wool sorter disease Caused by Bacillus anthracis (Facultative anaerobe) 3 toxins (edema factor- I, Lethal factor II, Protective antigen III) Rx: Curable if detected at early stage, Penicillin @ 20,000 IU

Listeriosis

Syn: Circling disease, Silage sickness, Caused by Gram +ve bacterial agent,; Listeria monocytogenes There are four forms; (a) Encephalitis (necrosis in brain) (b) Septicemia (MOP in pregnant animals, placentitis, and ultimately death) (c) Abortion (d) Mastitis Rx and Control: Penicillin @ 44,000 IU / kg IM STD for 7 days

Black Leg/Quarter

Syn: Clostridial myonecrosis Caused by Clostridium chuvie It produces alpha, beta, gamma and delta toxins Clinical Findings: Fever, lameness, stiffness of hind limb muscle, skin becomes dry and darker in color. Causative agents get entry by deep injury mostly in hilly and sandy areas.

VIRAL DISEASES Canine Distemper

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Syn: Hard pad disease, Canine influenza Characterized by diphasic fever, ocular and nasal catarrhal discharge, frequent cutaneous eruption. Due to secondary infection, there may be pneumonia, diarrhea. Etiology: RNA –virus, Canine distemper virus, family Paramyxoviridae; which is closely associated with Measles virus of human and rinderpest virus of cattle. Clinical Findings: Viremic diphasic fever, skin redness and pustules, gastroenteritis resulting to diarrhea, respiratory problem (pneumonia), reproductive form, nervous form Vaccine; 1st : 6-8 wk 2nd: 12-14 wk 3rd: 16 wk Dam vaccine: 1 month before whelping

Infectious Canine Hepatitis

Syn: Canine adenovirus hepatitis, contagious hepatitis, Blue eye disease, Blue eyes subside in 7 to 10 days. There are four forms of disease; Mild: mild increase in normal body temperature, mild photophobia, enlarged tonsils, sudden recovery is being observed Acute: Increased temperature, depression, sceleral edema, conjunctivitis, lacrimation Per-acute: Sudden collapse, > 104 F temperature, vomiting, diarrhea, animal falls and rolls. Chronic: Vomiting, purulent nasal discharge, recovered animal becomes carrier, nervous signs. Blueness eye due to cloudness of cornea

Canine Parvovirus

Syn: Panleukopenia of dog, Hemorrhagic enteritis Caused by Parvo-virus, which causes depletion of B and T lymphocytes Clinical findings: Vomting, diarrhea, anorexia, dysentery, pale mucous membrane, gastroenteritis, myocarditis leading to heart arrest. Forms: Enteric Congestive heart failure Acute sudden heart failure Vaccinations 2nd month 12-14 week from vaccinated dam 1st at 15 day 2.5 month from non-vaccinated dam

Rabies Cold blooded are carriers. Caused by Lyssa virus, belong to family Rhabdoviridae There are three forms; Prodromal: 1-3 days; excited animal, stay in corners, dilated pupil, decrease corneal reflex Furious: 7-10 days: Over-excited, hypersalivation, muscular in-coordination, tremors, convulsions. Dumb/Paralytic; 2-10 days: Ascending paralysis/centripetal paralysis, (H, FQ, Head and neck), No skin and GIT reflexes Vaccination: 1st at 3 month, then after 1 month, then after 1 month, then after 1 year. Reservoirs: Bats and vampires

73

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Equine Viral Arteritis

Caused by Togavirus Characterized by edema, inflammation of vessels, fluid accumulation in body cavities, persistent high fever, lacrimation, spasm, abortion in pregnant animals, Transmitted by Coitus Postmortem findings Multifocal myometritis

Vasicular Stomatitis

Caused by vasicular stomatitis virus of family Rhabdoviridae. Attack on oral mucosa, and coronary band, vesicles develop, which upon rupture becomes ulcers. Nasopharynx ulcers, epistaxis, and hoof may shed.

Equine Herpes Virus Infection

EHV-1 (more pathogenic) than EHV-II Infection may be associated with: a) Respiratory system b) Reproductive system or c) Nervous system

Dermatophylosis

Syn: Ringworm disease Fungal infection Cause by Trichophytom equinum, T. versicosum and T. microsporum. Clinical findings Patchy alopecia, urticaria, pruritis, itching, pain Use any skin ointments which may effective against fungal infection, Wash by 0.5% solution of Sodium hypochlorite.

Anhydrosis/Puff/DryCoat/Non-Sweating Syndrome Due to beta 2 adrenergic stimulation, Caused by 1) hyperkeratinization 2) Hyperthyroidism 23) Heat exertion Clinical Findings: Decreased appetite, increased pulse rate, tachypnoea, increased temperature and alopecia.

METABOLIC DISORDERS Postparturient Hemoglobinurea

Due to low phosphate and copper dietary intake Rx: (i) 5 liter blood (ii) Na-acid phosphate, IV 60gm+ 300 ml water for 5 days (ii) Dicalcium phosphate orally

Milk Fever

Normal serum calcium level: 4-5 mg/dL Abnormal level: 1.5-3.0 mg/dL Condition is characterized by hypocalcemia, weakness, depression of consciousness. Low calcium level around parturition due to (i) Ca released in clostrum (ii) Intestine can not absorb sufficient calcium (iii) Skeleton can not fulfill the requirement of Ca+. Along with Hypocalcemia, hypophosphatemia and hypomagnecimia may be accompanied.

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Clinical Stages: There are three clinical stages. Stage I: Excitement with hypersensitivity Muscular tremors of hind and forelimbs Stage II: Sternal recumbancy Rectal temperature is subnormal (97-101 F) Cow unable to rise Stage III: Stage of lateral recumbancy Heart sounds inaudible Treatment: Ca-borogluconate, IV 25% solution @ 500-1000 ml.

Paralytic Myoglobinurea

Called “Azoturia” A Metabolic Disorder of horses occurring during exercise after a period of inactivity on full ration. It is characterized by myoglobinurea and muscular degeneration.

Tympany / Bloat

Tympany is an accumulation of gas in the rumen while bloat is the accumulation of gas along with frothy foams. Caused by leguminous plants + high concentrate ration + ruminal stasis Treatment: (i) T.T. oil (ii) Linseed oil (iii) Carbacol Injection 1-3 ml S/C (iv) Nux vomica powder (v) As last resort, use Trocar and Canula to save the life of the animal

VIRAL DISEASES PPR [Peste Des Petitis Ruminants]

Also known as “KATA” Signs and Symptoms: (i) High fever (ii) Grey to yellowish discharge from eyes and nose (iii) Diarrhea (iv) Pinpoint grey or red lesions in lining of mouth (v) Pale grey area and dead tissue mout (vi) Thick cheesy material covering gums (vii) Lips may appear swollen (viii) In later stages, nodules or crusts may appear around the mouth resembling contagious pustular dermatitis. (ix) Finally animal died due to pneumonia, difficult breathing and coughing.

Rinderpest Signs and Symptoms: (i) Fever, loss of appetite, depression, decreased milk production (ii) Running eyes and nose 75

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

(iii) (iv) (v) (vi)

Erosions develop in mouth (gum, tongue, cheeks and palate) and leave areas of dead tissues. Discharge from eyes and nose become grey yellow and foul smell. Severe diarrhea Dehydration and death

FMD (Foot and Mouth Disease) Signs and Symptoms: (i) Fever, loss of appetite, and decreased milk production (ii) Depression, heavy salivation, reluctance to move (lameness) (iii) In the mouth (lips, tongue, gums, cheeks and palate) blisters develop which rupture and leave erosions. (iv) Blisters + erosions are also formed on the hooves. They may become infected and hoof may loosen and become deformed. (v) Sometimes, blisters and sores are seen on the teats and udders. (vi) Pregnant animal may abort (vii) Young animal may die Treatment Strategy: (i) Isolation of infected animal from other healthy animals (ii) Amoxicillin @ 1 ml / 10 kg bwt (iii) Mouth wash with Gentian violet [1 part] + Glycerin [100 part] (iv) Foot bath with phenyl formalin + CuSO4 (2%)

ANIMAL REPRODUCTION Ovaries:

In Cattle, Buffalo, Sheep and Goat, ovaries are oval-shaped. In Mare, kidney-shaped and in Camel, these are like a bunch of grapes.

Cervix:

In mare and camel, no cervical rings. In mare, there are conspicuous folds in mucosa.

Age of Puberty Specie Cattle Buffalo Sheep, Goat Horse Cat Bitch

Ovulation Time Cattle, Buffalo Sheep, Goat

Age of Puberty (in Months) 7-11 [Exotic breeds] 24 [Sahiwal breed] 30 5-9 12 [Beetle breed] 18 6-12 7-16

10-15 hrs after the end of estrus 24-36 hrs before the end of estrus

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Heat Signs (i) (ii) (iii) (iv)

Dirty rumps Streaks of saliva by licking on flanks Rises her tail and move side wise Animal licks vulva of other animal and would like to be licked by other animals and put chin on the back of other (v) Frequent urination Nervous Signs (vi) Refuse to eat (vii) Bellowing (viii) More walking 2-4 times more than normal (ix) Discharge of mucous from vulva (x) Decreased milk production External Signs (xi) Swelling of vulva (xii) Butting Most reliable sign of heat is “Stands to be mounted”. Heat without any estrus sign (external) is called “Silent heat”.

Length/ Duration of Estrus Period Cow, Buffalo Sheep Goat Mare Bitch Cat Camel

16-18 hrs 36 hrs 36-48 hrs 7 days 10 days 8-10 days 10-12 days

In Cattle, and Camel length of estrus period depends upon mating, it stops within 1-2 days after mating.

Breeding Season

Majority of buffaloes show heat in: Majority of cattle show heat in: Sheep and Goat ; Short day breeder Mare ; Long day breeder Cat; Long day breeder Bitch : Two breeding seasons in year

October, November April, May October, November Mid February – March -October, November & March, April

Seasonally Polyestrus

These animals which have many estrous cycles during particular season of the year e.g. Mare, Sheep and Goat.

Non-Seasonal Polyestrus

In these animals, estrus cycle continue through out the year e.g. Cattle and Buffalo

Mono-estrus Estrus cycle occurs once in a season. E.g. Bitch, Cat and Wild animals 77

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

CL dependant animals for Progesterone

Cattle, Buffalo, Goat -- > If we remove CL, abortion will occur

Placenta dependant animals for Progesterone Mare

Different Stages of Estrus Cycle Proestrus Estrus Metestrus Diestrus

2-3 days

3-5 days It is the longest period of cycle; 10-14 days. This is the period of CL.

Follicular Phase:

Proestrus and estrus periods are collectively called “Follicular phase” or “Estrogenic phase”. During this phase, estrogen level is more than progesterone.

Luteal Phase:

Metestrus and Diestrus periods are collectively called “Luteal phase” or “Progestrone phase”. Natural C.L. diameter is about 2-3 cm

Length of Estrus Cycle in Bovine Cow Heifer Range

21 days 20 days 17-24 days

Nymphomenia There is hypersensitivity due to cystic ovarian disease [COD]. Female appear like bull, pitch of voice is also bullish, and there is relaxation of sacroschiatic ligament.

Fertile Life Specie Cattle Sheep Mare Human

Sperm 24-48 hrs 24-48 hrs 72-120 hrs 24-48 hrs

Oocyte 12-24 hrs 16-24 hrs 6-8 hrs 6-24 hrs

In Bovine, ovulation can occur at any point on the ovary except hilus and part of the ovary which is attached to the broad ligament. In Mare, ovulation can only occur at “ovulation fossa”. In Camel, ovulation can occur alternatively right and left ovary. In Cattle, 60% ovulations occur from right ovary. Basic role in the ovulation process is of LH [Leutinizing hormone].

Sponatenous Ovulators

Ovulation take place automatically (special stimulations are not required) e.g. Cattle, Buffalo, Mare, Bitch

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Induce Ovulators

These animals require certain special stimulus for ovulation e.g. Camel, Cat, Rabbit. In these animals, ovulation needs first copulation as stimulus (physical vaginal stimulation) – it is required for surge release of hormone.

Gestation Periods of Different Farm Animals Cattle Buffalo

Nulli-parous Animals

The animals which has not given birth to any young one

Primiparous Animals

The animals that calved for first time in their life

Differential Point

In Rabies, animal start bellowing continuously but in estrus, intermittent bellowing. Restlessness in both, off feed, decreased milk production in both. Estrogen alongwith progesterone cause appearance of pronounced estrus. First estrus at puberty and after parturition is silent because there is no or very low progesterone level at that time.

Act of Parturition Calving Foaling Whelping Ferrowing

Cattle/Buffalo Mare Bitch Swine

Signs of Approaching Parturition (i) (ii) (iii) (iv) (v) (vi) (vii) (viii) (ix) (x) (xi)

Relaxation of sacroschiatic ligament Vulva size increased 2-4 times Enlargement of udder Opaque, yellow turbid discharge from teats Stringy mucous discharge from cervix (vulva) Anorexia Reslessness Frequent sitting and standing Arching back Kicking at belly Sweating in flank region and below elbow before 4-6 hrs

Role of Hormones in Parturition

Estrogen i) Stimulate release of PGF2a from the uterus ii) Primes the uterus for effect of oxytocin iii) Primes the cervix for effect of relaxin PGF2a 79

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

i) CL lysis ii) Strong uterine contraction Relaxin i) Relaxation of cervix Oxytocin i) Strong uterine contraction for fetal expulsion

Stages of Parturition First stage

Dilatation of cervix

Second stage Expulsion of fetus Third stage

Expulsion of placenta

3-8 hours (cattle/buffalo), 2-6 hours (sheep/goat) 1/2 – 4 hour (mare) 1/2 – 1 hour (cattle/buffalo), 4 hours (heifer) 1/2 -2 hour (sheep/goat), 10-30 min (mare) 2-8 hours (cattle/ buffalo), 1/2-3 hours (mares)

Puerperal Period (Involution period): Time to complete uterine involution. Foal heat: Mare comes into heat 10-13 days after parturition, Mating at this time may have very less chances of conception.

REPRODUCTIVE BIOTECHNOLOGY Artificial Insamination (AI) It is started in 1954 in UVAS. In 1962, technology was accepted by government. A major semen production units in Pakistan. Advantages: i) Increase bull efficiency ii) Increase potential for genetic selection iii) Decrease inbreeding chances iv) Discourage disease transmission v) It provides facility at the door step vi) Semen can be stored for years vii) Helps in progeny testing Success of A.I. depends on: a) Time of insemination b) Proper heat detection Mare: Insamination done 36 hrs before ovulation time and ovulation occurs 24-48 hrs before end of estrus. Follicle size: 35-40 mm

No. of Sperms per Semen Dose: Fresh: 10 million

Frozen: 20-25 million

Methods of Semen Collection

1. Recovery Method: Advantage: Maximum ejaculate can be obtained Disadvantage: Sperm loss and deterioration 2. Massage Method: Disadvantage: Semen is not balance in composition. 3. Electro-ejaculation: Mostly in ram/buck Disadvantage: Urine contamination 4. Using Artificial Vagina (AV) – Temperature (42-44 C)

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Gross Evaluation of Semen i) Volume: depends on the sexual excitement and activity Decreased: young male, excessive use of bull, incomplete ejaculation, failure of ejaculation, bilateral seminal vesiculitis Increased volume relates with: Maturity of bull, body size of animal, reproductive health and vigor of male animal ii) General appearance: Creamy (Grade 2), Light Cream (1) iii) Presence of any foreign particle iv) pH of semen (6.5-7.2 is ideal one)

Macroscopic Examination i) Mass Activity: It reflects sperm concentration and viability ii) Motility percentage: 2.9% Sodium citrate solution is used. 80-100 Very Good 60-80 Good 40-60 Fair 20-40 Poor 0-20 Very Poor iii) Concentration of sperms; by using hemocytometer Extenders for Semen: MYG, LYG, LFGY, FYG and Sodium citrate – egg yolk extender

Cystic Ovarian Disease (COD)

There are three types of cysts on ovary; (i) Follicular cyst: Follicles develop on ovary and after attaining a size of maturity (2 cm) persist on ovary for a period of 1 week or more in the absence of functional CL There is complete deficiency of CL in this case. Rx: LH injection, (hCG has function like LH) – Inj. Physex given IV @ 300 IU (ii) Luteal cyst: It is unilateral single cyst on the ovary; leathery appearance due to lutinization. It is due to problem in release of LH. (iii) Cystic Corpora Lutea: It is a CL with centrally fluid filled cavity. Causes: (a) Hormonal imbalance (insufficiency in release of preovulatory LH surge). (b) Stress factors (c) Toxins and infections (d) Secondary to uterine infection (e) Exotic breeds are more prone to COD (f) Nutritional stress (g) Increased milk production Treatment: PMSG or hCG (5,000 to 10,000 IU) or use GnRH preparations.

81

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Metritis Inflammation of metrium and pus form, no persistent CL, cervix is partially open.

Pyometra It is due to infection, damage to endometrium, PGs not released and CL persist, cervix is closed.

Infection of Uterus at Open Period Predisposing factors are unhygienic mating, ascending infection, wrong time insemination and other malpractices. Types: Three categories based on exudation, load of infection.

i) Endometritis It is of three types; c) 1st degree endometritis: Inflammation changes occur, mucus + pus in estrus period, most infection occur in this period, uterus less hard. Dx: At the time of insemination Rx: Lugol’s iodine is not given in pus condition but if 1st degree becomes chronic and wall becomes thick then lugol’s iodine can be given. Post A.I. single antibiotic non irritating inj can be given. d) 2nd degree endometritis: Mucopurulent discharge even after estrus period, swelling of uterus is more resembling a pregnant (1- 1 ½ month) uterus, uterine wall thickened and swollen. Rx: Antibiotic given for 7 days, Rest for a cycle, then Lugol’s iodine can be given after 10-15 days to generate new endometrium, endometrium has secretory function. Antibiotic @ 40-50 ml given I/U in separate horns (half + half) – Streptomycin, Oxytetracycline may be used for this purpose. e) 3rd degree endometritis: Uterus size increased like 2 to 3 months pregnancy, cervix is closed, pyometra, persistent CL. Rx: PGF2 alpha given for luteolysis of persistent CL. First E2 (stilboestrol) given for flushing @ 1ml in buffalo -- > make 50 ml solution and given intrauterine.

Important Points:   

Calving interval in buffalo is more than cow which is 470 days while it is 365 days in cow. 1 cm size graffian follicle going to ovulate 1 cc = 1 ml = 10 IU

Infertility

Temporary failure of reproductive efficiency due to any abnormality e.g. endometritis, COD

Sterility

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Absolute loss of reproductive ability in male or female e.g. Bilateral hypoplasia (congenital), Fallopian tube blockade, ovario-bursal adhesion.

Fertility

Ability to conceive, to carry viable fetus. By normal calving interval, calving rate, we measure the fertility.

Freemartin

In case of Freemartin, ovum contains both ovarian and testicular tissue. Freemartin is a classical example of intersex, in cattle when co-twin produced -- > male develop normal while female does not.

Salpingitis Inflammation of fallopian tube

Endometritis

Uterine mucosa is involved; most common cause in open period.

Metritis

When entire thickness of uterus is involved (uterine mucosa + myometrium)

Perimetritis:

When serosa is also involved

Parametritis Adjacent tissue + uterus is involved in inflammatory process.

Synchronization

Causing animals to be in heat at the same time. It is done by two methods; (i) Termination of Functional CL: Use following drugs; Lutalyse @ 5 ml / animal, Estromate @ 2ml / animal, Dalmazine @ 2 ml IM, Dinoprost (PGF2 alpha0 (ii) P4- containing Devices: These are used which block the release of gonadotropins (GnRH and FSH, LH) for 10-14 days. When progesterone is spontaneously removed the gonadotropins are released in more amount and cause ovarian rebounce. Devices: PRID , CIDR – Animals comes to heat after 2-3 days after removal.

Methods of Estrus Detection (i) (ii) (iii) (iv) (v) (vi) 83

Visual observation K-Mar heat mount patch Capsules having dye in it are placed on rump of animal, when animal is jumped by other animal, it rupture and impart color to back of the animal. Putting of yellow mark on back of animal Color is rubbed off when animal is jumped by other animal Use of teaser bull : penis deviated Chin ball: can be used on bulls, when it jumps it colours the hook of female. Pedometer: Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

(vii) (viii) (ix)

When animal in heat, it travel more (2-4 times), activity is observed through this device. Trained dogs: doing their job by smelling pheromones Use of close circuit cameras Detection of hormones: Progesterone concentration decreased in milk during heat. It should be < 5 ng for heat. P4 conc. is also used for early pregnancy diagnosis.

Misconception and Abortion 24-48 hrs --- > 40-30 mg DES (Diethylstilboestrol) or 4-8 mg Estradiol 2- 7 days --- > oxytocin @ 100- 200 IU, IM After development of CL , we can give PGF2 alpha, it causes regression of CL. 1- 5 month --- > PGF2 alpha 2- 6-8 month --- > PGF2 alpha + Corticosteroid (Dexamethasone) After 5 month, PG for CL and Dexa for placental source of progesterone is destroyed because at that time, animal has two sources of P4.

Procreation

Creation of new individual from existing one.

Early Embryonic Death:

Mostly occur between 8-19 days after mating Factors: (i) Nutrition (ii) Age (iii) Cytogenic abnormalities i.e. chromosomal abnormalities. (iv) Immunological factors: embryo is considered as foreign body. Abortion occur due to not developing immunosuppression. (v) Environment of uterus: (vi) Hormonal imbalance (vii) Time of A.I. and Sire Infertility Important Note: In case of hydroallantoic placenta is affected but in hydroamnios, fetus is affected.

Causes of Abortion

1- Non-infectious i.e. Genetic (Chromosomal abnormalities) 2- Infectious --- > Different diseases 3- Nutritional --- > Starvation, Deficiency of vit. A, E, D, selenium, iodine. Toxication of plants and weeds. 4- Hormonal imbalance: ---- > P4 defficiency, E2 increased, Costricosteroids 5- Physical Causes: a) Rectal palpation b) Transportation c) Making animal to run d) Major surgery e) Hyperthermia f) Allergies g) Shock

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

BACTERIAL DISEASES WHICH CAUSE ABORTION Brucellosis

Contagious abortion Time of abortion: Abortion occur in second half of pregnancy. Clinical findings: There is placentitis, retention of fetal membranes after abortion, uterine atonicity causes secondary bacterial infection. Brucellosis causes infertility by introduction of infection from infected bull (bacteria resides in testicles, epididymus, seminal vesicles). Treatment: Vaccination, 4-8 mon calf should be vaccinated with Brucella 51 strain vaccine.

Trichomoniasis

It is venereal disease which is transmitted by coitus of infected bull; remains carrier throughout the life but cow recovers spontaneously after infection. Infection is characterized by: (i) Low pregnancy rate (ii) Mucopurulent vulvular discharge (iii)Early abortion (iv)Pyometra (v) Edometritis (vi)Vaginitis Visible abortion occur at 2 to 4 months of gestation. Treatment: Metronidazole is best choice for treatment.

Vibrioisis Bulls remain permanently infected. Infertility, increased no. of services per conception, early embryonic loss/mortality Disease spread through coitus or improperly handled semen. Clinical findings: Abortion is less common (occasionally occur). Organism is found in female genital tract, fetus, placenta, prepuce and semen. After 13 weeks, local immunity is developed. Diagnosis: Agglutination test Treatment: Streptomycin at dose rate 25 mg/kg, Dihydrostreptomycin also gives good results.

Leptospirosis

Caused by L. Pomona, L. canicola, L. icterohemorrhagica There is elevated body temperature, fetal death, abortion, still birth and birth of weak calf. Increased fever with icterus , hemoglobinurea. In some herds, abortion occurs after "leptospira mastitis". Transmission is through mucus membrane, abraded skin and urine of infected cattle. Treatment 85

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Vaccination of all pregnant animals. Dihydrostreptomycin @ 25 mg/kg is effective.

VIRAL DISEASES WHICH CAUSE ABORTION Bovine Viral Diarrhea (BVD) Caused by Pestivirus of Family Flaviviridae. It causes abortion and fertility in the animals. Infection can be characterized by pyrexia, leucopenia, viremia, watery diarrhea, buccal ulcers, nasal discharge. Effect of reproduction: Venereal transmission, and Transplacental infection There may be abortion or mummification. Transmission is through oculo-nasal discharge, saliva, urine and feces. Treatment and Control: Extensive culling is recommended.

Infectious Bovine Rhinotracheitis (IBR) Caused by bovine herpes virus (BHV) It causes acute respiratory disease with conjunctivitis. It causes infectious pustular vulvovaginitis, abortion and infertility. Infection transmitted venereally. Sweling of vulva -- > congested -- > vesicles -- > pustules -- > ulcers formation and release of muco-purulent discharge. Similar lesions are found on penile integument and perpetual mucosa and prepitual discharge. Abortion occurs in late pregnancy. Treatment: Amolient creams on vulva and prepuce.

IMPORTANT TERMINOLOGY Gynecology It is a branch of science which deals with female reproduction during non-pregnant period.

Andrology

It covers physiological and pathological aspects of male reproduction (word “Andrology” is derived from androgens).

Theriogenology

It is the branch of veterinary medicine which covers all aspects of male and female reproduction. Dr. Bartlett introduced this term for the first time.

Dystokia

It means “Difficult birth”

Eutokia

When delivery of fetus is normal and spontaneous

Primiparous

Animal giving birth to young one for first time

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Multiparous

Animal going to parturite 2nd or subsequent delivery

Nulliparous:

Female which yet has not given birth to any young one.

Causes of Dystokia 1. Maternal (i) Uterus: There may be: a) Primary uterine inertia b) Secondary uterine inertia c) Rupture of uterus d) Torsion of uterus (ii) Cervix: There may be extensive fibrosis (iii) Vagina: Young age, Any tumor, injury or fibrosis 2. Fetal (i) Oversize (ii) Disposition To treat uterine inertia: we inject Ca- boronate + OT, 20 IU if position of fetus is right Schaffer’s method of rotation is used to correct the torsion. Schaffer’s plank dimension: 15 feet long, 1 feet wide and 2 inch thick – wooden plank

Prolapse

It may be i) Vaginal prolapse ii) Vagino-cervical prolapse iii) Uterine prolapse For correction: we can use: 1% solution of KMnO4 for antiseptic wash, Apply cream like Kenadex, it contains Neomycin + Dexamethasone, Replacement of mass, OT injection given after replacement about 50 ml, Then Use Truss for prevention Give pain killer (Diclofenic sodium) and antibiotics

Torsion "Rotation of the uterus on its long axis with twisting of anterior vagina" Uterine torsion is the complication of 1st stage of labor or early 2nd stage of labor. Causes: (h) Instability of bovine uterus which results from greater curvature of the organ being dorsal and the uterus being disposed anteriorly to its suspension of broad ligament. (i) Incordinate fetal movement in which fetus try to adjust itself to its normal posture in response to myometrial contraction. (j) Uterine instability (180 degree). (k) Frequent sitting and standing behavior of water buffalo (l) Jumping of buffalo/cow Types: 1. Right-sided torsion: Right ligament moves downward 2. Left-side torsion: Left ligament moves downward

87

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Anatomical Structures: Oviduct: It has three parts; a) Infundibulum

b) Ampula

c) Isthmus

Uterus: It has three layers; i) Endometrium b) Myometrium

c) Serosa

Placentome: Cruncle (from uterus) + Cotyledon (from placenta) + Villi Cervix: Cervical rings varies from 2-5

Broad Ligament

It consists of following parts: a) Mesosalpinx: Part of B.L. which is attached or the fallopian tube b) Mesometrium: Part of B.L. which s the uterus (especially horns and body) c) Mesovarian: Part of B.L. which s the ovaries. d) Inter-cornual: It is present between the horns

Pregnancy Diagnosis by Rectal Palpation 1) 2) 3) 4)

Asymmetry of horns Fluctuation of pregnant horn; At day 30, the quantity of fluid is 30-60 ml Conceptus (embryo): On day 30, conceptus can be felt, it ranges from 0.8 to 1 cm Fetal Membranes: 3 distinct membranes (from outside) i) Chorion ii) Allantois c) Amnion Placentomes Placentomes are more prominent at the base of the horn. These are present throughout the uterus in 4 rows; 2 dorsal and 2 ventral. Fetal Ballottement Strike the horn, the fetus will strike back your hand. Feeling of Freemitus Feeling of buzzing bee sound on uterine artery at 4-5 mon of pregnancy. Teratology Study of developmental defects of the growing fetus

Obstetrical Instruments For Respulsion and Rotation (i) William’s crutch repeller (ii) Binz’s repeller (iii) Fatal rotator or Uterine detorsion rod For Traction (iv) Cords and bands (v) Handles and chains (vi) Hooks (i.e. pointed and blunt) (vii) Krey’s hook

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

(viii) Forceps For Sectioning (ix) Obstetrical knives (x) Obstetrical spatula (xi) Obstetrical chisel (xii) Obstetrical hooks (xiii) Fetotome

Size of Fetus Age of fetus 2 month 3 month 4 month 5 month 6 month 7 month to onward

Size (resemblance) Mouse Rat Small cat Large cat Beagle dog Parts of the fetus may be palpated

Fetal Membrane Slip Test Time to perform 32 days 45 days 60 days 70 days

Result Small thread in 1 horn Small strings in 1 horn Strings in both horns Large strings in both horns

Size of Placentomes Gestation 75 days 100 days 115 days 125 days 150 days 180 days

Size of placentome (cm) 1 – 1.5 1.5 – 2.5 2.5 – 3.0 3.0 – 4.0 4.0 – 5.0 5.0 – 6.0

Resemblance Pea size Dime Nickle Quarter Half dollar Silver dollar

Palpable structure during different stages of pregnancy Stage (day) 35 – 40

Ut. Position Pelvic floor

Ut. Diameter (cm) Slightly enlarged

45 -50 60 90 120 150

Pelvic floor Pelvis / abd Abdomen Abdomen Abdomen

5.0 – 6.5 6.5 – 7.0 8.0 – 10.0 12.0 18.0

Palpable structures Uterine asymmetry, +ve fetal membrane slip test Same as above Same as above Small placentomes, fetus Samll placentomes, fetus, freemitis Fetus, freemitis

Clinical Use of Important Reproductive Hormones GnRH (For release of FSH and LH) Belin @ 10-20 g IM [Dalmerilin] 89

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

Indications: a) Follicular cyst b) Acyclicity c) Anovulation

PMSG/eCG (FSH-like action) Inj. Folligon @ 1500-3000 IU Indication: a) Superovulation in embryo transfer

hCG/LH Stimulates follicular maturation and leutinization Physex Leo @ 1500-3000 IU I/M Indications: a) Anovulation b) Ovarian cysts c) Repeat breeder

Oxytocin Oxytocin @ 10 IU I/M Indications: a) Milk let down b) Myometrial contraction during parturition and post-parturition

PGF-2α Luteolytic effect Dinoprost @ 25-35 mg IM Indications: a) Induction of parturition b) Induction of abortion and mummified fetus c) Treatment of pyometra d) Treatment of endometritis e) Ovarian cyst

Clinical Use of Reproductive Hormones Hormones are organic physiological substances. All reproductive processes are driven by hormones. Hormone: Hormone is a chemical substance that regulates certain activity of its target tissue (target is specific tissue which has receptors for the effect of the hormone). Receptor: Receptor is a special molecule present on the cell that binds with hormone to bring the required effect of the hormone. Hormones are organic physiological substances. All reproductive processes are driven by hormones. When problem is there in the effect of hormone function then it also indicates that the problem may lie due to the number of receptors present at target site.

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

GnRH (Gonadotropin Releasing Hormone)     

GnRH is the mother reproductive hormone. It is a deca-peptide hormone. It is secreted from hypothalamus which is 1/300 part of the brain. It is the part of diencephalon present at the base of the brain. Hypothalamus has three areas: a) Preoptic nucleus, b) Suprachiasmatic nucleus (SCN), c) Anterior hypothalamic area (AHA). Hypothalamus is made up of neurons, secretion occur from cluster of cell bodies and gonadotrops in the pituitary are the target cells. It controls hunger, anger, emotions and sexual process and pleasure.

Factors which STIMULATE GnRH secretions These factors can be divided into two categories, viz.: External or environmental and Internal or endogenous. External Factors:  Good balanced nutrition  Viewing sexually attractive individual of opposite sex  Weather (pleasant) especially in seasonal breeders. Long day is favourable for mare. Short day is favourable for sheep.  Favourable, comfortable and stress free environment. Internal Factors:  Epinephrine & Nor-epinephrine.  Melatonin favours the release of GnRH  Coitus in Cat (physical stimulation to vagina)  In cats and camels the sexual stimulation favors the release of GnRH as they are induced ovulators.   Progesterone (P4) and  Estrogen (E2) in acyclic females.  Sight and Hearing of sexually attractive individuals. (especially for males)  Pheromones favor the release of GnRH.

Factors which SUPPRESS GnRH secretions: External Factors:  Stress and Depression  Starvation  Prolonged sickness and Acute pain Internal Factors:  Prolactin (a hormone) suppress the secretion of GnRH.  Opoids i.e. β-endorphins, secreted while suckling, thus suppress the release of GnRH   Progesterone (P4) will lead to low GnRH production.  Low Estrogen (estradiol 17β) will lead to low production of GnRH. Estradiol 17β is needed for animal to be in heat.

Clinical Uses of GnRH Managemental Uses of GnRH 91

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

  

To enhance puberty in pre-pubertal age heifers. (To bring puberty earlier). To induce cyclicity in post-pubertal age heifers, if ovaries are of normal size. To induce cyclicity in postpartum females or early ovarian rebounce in postpartum females.  To minimize the incidence of follicular cysts in postpartum females. In high yielder cows, incidence of follicular cysts is high in postpartum period; due to low LH secretion. So all postpartum females must receive single shot pf GnRH 20 days after parturition. Follicle on ovary ---> ↑ estrogen ---> LH will release upon GnRH stimulation. No follicle on ovary ---- > ↓ estrogen --- > FSH will release upon GnRH stimulation  To improve conception rate, give a single shot of GnRH at the time of AI. It will cause release of LH surge and ovulation will occur at time, so improve the conception rate. There is about 5-10 % increase in conception rate.  To improve pregnancy rate, give a single shot of GnRH 10-12 days post-AI. It will cause release of LH which ultimately acts on luteal cells of CL in order to stimulate the activity of CL for progesterone release.  It is used in heat synchronization regime. Clinical Uses of GnRH   



To treat ovarian follicular cyst To curtail the prolonged heat period in mare. GnRH will cause release of LH, thus ovulation will occur. For this purpose, it is injected at 5th day of heat (estrus). To curtail the prolonged proestrus in bitch. In proestrus, bitch discharged blood out of vulva, so heat comes when blood discharge from vulva stops and female start accepting the male. Proestrus period in bitch is normally 10-12 days. In bitch, certain level of progesterone is also needed to come in heat, so inject GnRH after 10 days of proestrus, it will cause release of LH which ultimately luteinize the follicular cells and start releasing progesterone (Normally luteinization begins before ovulation in bitch). To treat the cases of delayed ovulation; because of property of GnRH to release bulk amount of LH hormone. Fertlization failure is because of delayed ovulation, so a single shot of GnRH at the time of AI or service will solve this problem and increase the fertilization rate.

Products of GnRH These are categorized into two types: i) Natural GnRH ii) Synthetic GnRH

Natural GnRH Preparations It is very difficult to get natural GnRH because of its so short half life. No clinical use has been reported, synthetic preparations are only available.

Synthetic GnRH Preparations >> Gonadrolin: Its structure is similar to that of natural GnRH. It is available with different trade names in the market: Cystorelin® and Factel® [50 μg/ml] >> GnRH analogues:

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

Such preparations are: Bilin [Receptal® 4 μg/ml by Hoest; Conceptal® 4 μg/ml by Star], Lecirelin [Dalmarelin® 25 μg/ml] Dose rate: >> Gonadrolin: Normal dose(for post AI or service, and follicular growth etc.): 250 μg/cow IM Dose for treatment of follicular cyst: 500 μg/ml IM >> Bilin: Normal dose (for post AI or service and follicular growth etc.): 20 μg/cow IM Dose for treatment of follicular cyst: 40 μg/cow IM >> Lecirelin: Normal dose( for post AI or service and follicular growth etc.): 50 μg/cow IM Dose for treatment of follicular cyst: 100 μg/cow IM Precaution:  You must wait for 8-10 days after treatment. If no effect, then repeat it.  You also do attention on nutrition of animal from 1 month before treatment. Protein and mineral mixtures must be provided to animal in their ration.  Animal with poor body condition usually does not respond optimally to hormonal treatment.

Gonadotropins These are of two types: i) Pituitary gonadotropins: FSH & LH ii) Placental gonadotropins: hCG & eCG FSH, LH, eCG and hCG are gonadotropic hormones. These are of family glycoprotein.These hormones are made up of alpha and beta carbohydrates molecule chains. These two chains are linked by covalent bonds. Alpha subunit is same in all these four hormones having 92 amino acids but beta subunit is different which is responsible for biological function. But alpha is also needed. Without a subunit the structure is incomplete and can not perform its function. Half life of Gonadotropins: Pituitary gonadotropins: FSH: 2 hours Placental gonadotropins: eCG: >3 days

LH: 2 hours hCG: >12 hours

Comparative Features of pituitary and placental gonadotropins Pituitary Gonadotropins (FSH, LH) Less half life Costly Low CH2O contents

Placental Gonadotropins (eCG, hCG) Long half life Cheap High CH2O contents

FSH: Follicotopin Growth of follicle from secondary to tertiary follicle It plays major role in synthesis of estradiole Target is ovary Source of natural FSH is pituitary of porcine or bovine. It is also produced now a days through genetic engineering by inserting FSH producing gene into the E.coli organism. 93

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

LH: Final growth of follicle, ovulation, formation of CL, maintenance of CL. Target is ovary and CL. Source of natural LH is porcine or bovine pituitary. eCG/PMSG: Its action is like FSH in all animals except in mare where its action is LH like. It is released in mare at 40 day pregnancy by endometrial cups (specific structure formed by trophoblast cells of embryo) by day 70 of pregnancy PMSG reaches to peak level i.e. 100 IU per ml of plasma and this peak persist up to 3rd month. During 4th month capacity of production reduces gradually and in 5th month it stops. No PMSG as endometrial cups are destroyed (destruction start in 4th but completed in 5th month). Fetus is 50% foreign for mother. In uterus local immune system becomes weak that it does not attack fetus. Pg weakens local immune system. Maternal system recognizes endometrial cups, kill them gradually, upto 5th month all dead no PMSG. hCG: Acton is LH like. Embryo starts production of HCG by day 10th of pregnancy because it implements with endometrium by that time. The outermost cells (trophoblast) start producing hCG. At day 90 the peak production of hCG is seen. At 5th month its production decreases but low level 22 IU per ml of plasma of hCG continues to be produced in it till end of pregnancy. It is leuteolytic hormone. Embryo is responsible for its own life by producing the sufficient level of the hCG. PMSG is a bigger molecule. It can not through kidney so can not through the urine and can not be detected. So blood is used to extract the PMSG. hCG will through kidney in the urine and can be separated from urine of the pregnant human female.

Clinical Use of FSH:

 Infertility due to failure of follicular growth  It is used for superovulation Dose of FSH: Available preparations: FSH-P®, Follitropin® Follicular growth: 5 mg IM, 12 hourly for 2 days For superovulation: 5 mg IM, 12 hourly for 4-5 days

Clinical Use of PMSG:

 Infertility due to failure of follicular growth  It is used for superovulation Dose of PMSG: Available preparations: Gestyl ® (by Organon), Folligon ®, Fostim® Follicular growth: 1000 IU, IM For superovulation: 2500-3000 IU, IM once in a cow

Clinical Use of LH:

 For treatment of follicular cyst  For treatment of delayed ovulation Dose of LH: Available preparation: Lutropin® For delayed ovulation: 12.5 mg, IM

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

For treatment of follicular cyst: 25 mg, IM

Clinical Use of hCG:

 For treatment of follicular cyst  For treatment of delayed ovulation  Used in the Rig test Dose of hCG: Available preparations: Pregnyl® (by Organon), IVF-C® (by LG) For delayed ovulation: 5000 IU, IV For follicular cyst: 10,000 IU, IV

Rig Test Purpose: To confirm the suspected cases of cryptorchidsm Action: hCG simulate the production of testosterone in blood Take blood sample (Sample A) 30 min before giving the injection of hCG. Then give a challenge dose of hCG i.e. 10,000 IU Collect the blood sample (Sample B) again 30 min after giving the injection. Compare the both samples (A& B) for the level of testosterone. Result: High rise in testosterone level in descendant testes but no difference is seen in cryptorchidsm. For testicular descent in pups: give a dose of 500 IU per pup, 2 times in a week for 4 week.

Prostaglandins

It is group of hormone like substances, derived from fatty acids mainly from arechidonic acid (essential FA). Arechidonic acid is 20 C polyunsaturated fatty acids with a cyclopentane ring in its structure. There are different classes of prostaglandins depending upon its structure. Mostly fatty acids are involved in inflammatory process. They perform functions as in blood pressure, reproductive organ, respiratory system, digestive system. Prostaglandins are ubiquitous in nature (all over the body). Histamine is stored as pre form in the body but prostaglandin is synthesized when it is needed on the basis of enzyme involved. First prostaglandin was found in human semen by Swedish physiologist Von Euler in early 1930s (1931). He wanted to know effect of semen on uterus (mice uterus was used that showed contraction by semen effect). Histamine and ACH were two substances known that caused smooth muscle contraction but human semen does not have these two. So later he found the protate gland that causes contraction, present in the seminal plasma. In 1934 prostaglandin name was given to it. In 1959 Eliasson gave idea that prostaglandin comes from seminal vesicle not prostate gland and causes myometric contraction. Similar substance is released by many tissues. There are different types of prostaglandins as A, B, D, E, F, I. E and F are important in reproduction. In male it may help in ejaculation of semen form male duct system. During 1960s animal scientists came to know that old CL regresses before new cycle starts. In 1969, Niswander et all found that in sheep the prostaglandin of endometrial origin causes cyclic regression of the CL. In 1972, in horses same thing found to kill CL. So prostaglandin of endometrial origin is luteolytic. Function: o Cyclic regression of CL. Due to strong vasoconstriction blood supply is reduced to CL and physical death of CL occurs. (at 17-18 day of cycle abundant PGF2α is released and drained by uteroovarian veins, directly es from vein to artery and 95

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

regress CL without entering general circulation. When we take blood from jugular vein, it does not contain prostaglandin). o PGE2α is luteotropic, favours the growth of CL. It is vasodilator and increases blood supply o Helps in transmission of semen in duct system o In male prostaglandin causes smooth muscle contraction for ejaculation of semen. o Involved in ovulation. It is produced in follicle causing contraction of myoepithelial cells of follicular wall. (Indomethacien is substance injected into follicle, ineffective enzyme, no PGF2α and no ovulation. So PGF2α is important for ovulation). Increased the pressure of follicle fluid, thinning of wall and contraction of wall leads to rupturing of follicle. (In endometrium release of PGF2 is activated by estrogen and oxytocin). o At the time of parturition it softens the cervix and cervix is easily is expandable. o Involved in first phase of parturition. PGF2α produced in placentome under the effect of increased level of estrogen. o Fetal placental expulsion is also by the role of PGF2 α. At the fisrt stage labour it reaches its maximum concentration then its production decreases but contractions remain for placental expulsion and lochial discharge (It is blood mixed discharge from uterus that comes from 10-15 days after parturition). Sources of PGF2α: In female endometrium Fetoplacental unit during parturition Myometrium (parturition) Grafian follicle (during ovulation) Uses: All its uses are based on its two primary effects/uses as the regression of CL and myomerial contraction. So uses are o Treatment of acyclic animal due to persistent CL o Treatment of luteal cyst o Estrus synchronization (2 injections of PGF2 11 days apart) o Induction of parturition. We use corticosteroids also along with it to finish all sources of progesterone. o Termination of pathological pregnancies (as fetal mummification, fetal maceration, hydroamnios, aydroallontois) o Termination of unwanted pregnancies. CL remains for 5-6 days insensitive to PGF2α, so give PGF2α after 7 days of ovulation to avoid pregnancy. Response of CL to PGF2α is better for 10-11 days aged CL than 7-8 days aged. Because receptors are not much effective on CL. Upto 150 days alone PGF2α can be used but after that corticosteroids are also used because placenta is also the source of progesterone and both CL and placenta should be regressed. o Prevention of pregnancy. After day 10 the superficial attachment occurs but after 22 when attachment has occurred then it is difficult to remove because now here the firm has been established. o For the treatment of pyometra because CL persists in this problem; so the CL is regressed by PGF2α, cervix is relaxed and E2 is then given. o In mild or first degree endometritis - uterus is soft, cycle is normal, history of repeat breeding; so check for small flakes, so give some PGF2α. o In silent estrous. Estrous without behavioral signs of estrous or weak heat signs, o In reported anestrus - animal not coming heat according to owner/failure to notice signs or male in herd is unable to detect estrus also called subestrus; give PGF2α after

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

3 days animal will show sign. Progesterone assay can be carried out to know the presence of functional CL. If functional CL is present, give luteolytic dose. Luteolytic dose can also be given 72 hours before insemination. Animal comes into heat 48-120 hours. More than 70% comes in 72-96 hours, 30% in 48 hours and the later in 96 hours Brands of PGF2α: Dinprost- is generic name of synthetic PGF2α. Luteolytic dose in cow is 25 mg I/M (lutalyse, 5 ml contains 25 mg). In mare 5 mg or 1 ml PGF2α Analogues: Cloprostenol (500 μg IM or ½ mg or 2 ml) - estromate (ICI), cyclomate (star), prostenol (Selmor) Fluprostenol - equimate (1 ml, 250 μg) Fenprostenol Luprestenol D-clorprostenol (being dextrorotatory) - Delmazine its lutalytic dose is 150 μg or 0.15mg in cow and 75 μg in mare. (2 ml in cattle, 1 ml in mare) Mare should be istered PGF2α under supervision of doctor. Diarrhea, sweating, increased respiration may occur within 20 minutes. We can use spasmolytic in advance or after that if show any complication in mare. PGF2 α is strong bronchocontractor. In bitch, PGF2α is used in case of pyometra for 2-3 days. As leuteolytic it is not effective in bitch.

Estrogen Chemically it is steroid (having 4 ringed 17 C structure). It is female sex hormone. Cholesterol (27 C) → Progestin (P4) (21 C) → androgens (19 C) (male sex hormone) → estrogen (18 C) All steroid hormones are derived from the cholesterol which is a 27 C molecule. In stallion normally large amount of estrogen is secreted in urine which is converted from testosterone. It is released by grafian follicle of ovary and cortex of adrenal gland. In some male dogs the estrogen may be produced. Here the sertoli cell tumor is the cause that results in high estrogen level and other dog will attract them. E2 is also produced in brain and adipose tissue. In placenta more amount of E1 is produced and it goes to featus (mytogenic) and help in fetal growth. When puberty is around to occur then increased reproductive tract development due to E2. In sheep and cow specially seen that in brain there is centre on which E2 works. Priming of progesterone before E2 work on brain is necessary for behavioral estrus. That is why silent estrus is seen first time. E1 (estrone), E2 (estradiol), E3 (estriol), other are equilin and equilinium (in mare), most important is E2 estradiol. These are steroidal estrogens. Plants have non steroidal estrogen. Functions: o Androgens, if in high concentration, bring secondary sex characters prominent in the female. o In fetus responsible for neural development which is different from male. LH surge release centre in brain is only in female and this is because of neural development difference. o E2 is responsible for secondary sex characteristics o E2 causes behavioral heat signs in all animals o E2 causes release of pre ovulatory surge of LH o E2 softens the cervix o Prime uterus for the oxytocin and PGF2α

97

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

o Brings more blood to reproductive system, increases tonicity of uterus at the time of heat. So uterus becomes more resistant to contamination or infection; leads to growth of uterus. o Pelvic ligament dilation o Mammary gland development o Decrease the chances of infection o During pregnancy, E1 (estrone) level increases, so indicate pregnancy. o At the time of estrus it causes increase blood flow to uterine lumen, promotes the growth of endometrium, favors production of mucous through mucous glands, causes relaxation of cervix, increases water content in reproductive tract, increases tonicity of myometrium (uterine contractability increases) and increases capillary bed of uterine wall. Minute capillaries develop in proestrus and break of capillaries in estrus (some animals show post estrus bleeding). o At the time of parturition it favours or stimulates the secretion of PGF2α, increases contractability of uterus and softening of cervix and relaxation of ligaments. Preparations: E2 (estradiol) or E2 -17 β. It has hydroxyl group. Its forms as ester include Benzoat, valerate, cypionate, propionate, dipropionate. E2 - 17 β 1 mg per ml Veterinary product is agofollin (E2 diprpionate) (1 mg/ml) DES diethylestilbesterol (non steroid estrogen) (10 mg/ml) (I/M or Intrauterine infusions are given). It is 10 times less potent than estradiol. E2-17 β and DES are thick and oily so use needle of bigger guage. Tablets: ethynil estradiol 50 μg, 100 μg, 1 mg E2 is high at proestrus and beginning of heat. E2 in heat is 30 pg per ml of plasma (sufficient to cause heat). Clinical Uses: o Prevention of pregnancy: in cow E2-17 β 4-8 mg per animal, DES 40-80 mg per animal. In cow within 24-48 hours post mating. In bitch 3-7 days post mating three injections of E2-17 β 300-500 μg per animal or 10 μg per Kg. Half to one mg DES in bitch. It will slow down the movement of fertilized egg or embryo to uterus from fallopian tube by causing swelling and will not let the embryo to come into uterus at proper time. E2 is not preferred if PGF2α is available. Buffalo are more sensitive to estrogen. In buffalo it produces more side effects as low milk yield, excessive relaxation of pelvic ligament which may lead to vaginal prolapse, pronounced heat signs. There is ½ to ¾ less milk. It is regained within 5-7 days. o Termination of pregnancies: Success rate is more upto 5 month. DES 100-150 mg per cow and 5-10 days post injection abortion occurs. o In male dogs the treatment of prostate hyperplasia. In this condition dog feels difficulty in urination. Tablets ethynil (estradiol acetate) 50 μg-1mg tablets, daily 1 mg or 100 μg is given. So dogs are hypersexual and prostate gland grows due to testosterone effect so the estradiol will block the site of the testosterone to block its effect on gland. Surgical treatment is better. o Intra uterine infusion use in case of the pyometra. After PGF2α is used at day one. Then at day three 2-3 infusions after 48 hours (1 ml or 10 mg DES + 30-40 ml of distilled water) then give antibiotics for 5-7 days consecutively. o Non antibiotic treatment of endometritis ½ to 1 ml infusion. But PGF2α is drug of choice o It may help in the treatment of torsion to avoid twist in fresh cases of less degree for purpose of cervical dilation. If old case then no response because of low blood supply

A KEY GUIDE FOR

PCS

& OTHER COMPREHENSIVE EXAMS

and tissue devitalized. After rolling open the cervix by giving estrogen. For cervical dilation 50 mg i/m after correction of torsion. After 12 hours there will be releasing. o In heifers some times cervix is short. So difficult to give antibiotic infusion. So give infusion of 5 mg DES. o E2 Anabolic Effect: Zeranol (capsule like) has estrogen like effect implanted in ear for 3 months in cow and steer and give weight gain effect. Zeranol is produced by a fungus. Ralgro (salt is zeranol) has anabolic effect in cattle, sheep, goat has 10-15% more weight gain than the untreated animals. In acute puerperal metritis (fever, off feed) estridol is contraindicated. Because blood supply increases by giving estradiol and it causes toxin absorption through this area

Progesterone

It is steroid hormone. Its main source is CL. Before puberty it comes from adrenal cortex. Its effects are seen after puberty. When animal becomes cyclic, its production starts. Just after ovulation its concentration gradually increases. In cow ovulation occurs at day two. Then becomes carpus hemorrhagic and ruptured follicle is converted into CL and complete CL after 4 days and at day 5 CL is embedded in ovarian tissue and is soft. Normally 0.2-0.5 ng/ml of plasma on heat day. At day 17-18 CL is regressing and progesterone concentration starts decreasing. Cyclic cow on day 17 has more than or equal to 5 ng/ml of plasma in cyclic cow. PGF2α when comes then CL start decreasing abruptly. Animal having high concentration of progesterone at estrus have not good conception rate. It affects the transport of gametes.. At day 5 there is more than or equal to 2 ng/ml of plasma. In cattle buffalo maximum concentration of progesterone is at day 10-12. Developing CL 2-5 day Growing CL 6-10/11 day or young CL (2-5 ng progesterone) Mature CL 10-17 day (max. progesterone >5 ng) Regressing CL 17-18-21 day (decrease P4 < 5ng) Regressed CL on hat day (minimum P4 < 0.5 ng) Functions: o Progesterone and estrogen are antagonist. They work together during gestation period. As the pregnancy advances for uterus growth estrogen is accelerating. Progesterone suppresses the heat. Estrogen is in higher concentration at the time of estrus, stimulates GnRH and causes the release of LH surge. In proestrus estrogen increasing and progesterone decreasing and it causes negative effect on GnRH. o P4 causes the maintenance of pregnancy, stops cyclic activity by suppressing gonadotropin release, puts negative effect on the hypothalamus and anterior pituitary and does not let the ovulation to occur. Progesterone also suppresses the heat signs. Progesterone released from the CL in non pregnant animals and in pregnant animals it also comes from placenta. o P4 suppresses the uterus contraction, so it maintains the pregnancy in contrast to estrogen that increases the uterus contraction. o P4 suppresses the local immune system response (suppresses infiltration). o P4 stimulates secretary activity of endometrium that helps in nourishment of early embryo as the fetus get nutrition from uterine milk (in form of nutrients). o P4 helps in closure of cervix and formation of the pregnancy seal (thick gummy mucus plug formed within the cervix). o E2 forms the liquefied mucien form the thick mucine. 99

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

o During advancement of pregnancy estrogen and progesterone have synergistic effect as growth of uterus. o It helps in maternal behaviour in females. Clinical Uses: o Estrus synchronization PRID, CIDR PRID = P4 (1.55g) + estradiol benzoate (10 mg) CIDR has 1.99g P4. o Progesterone sponges kept in vagina, held with string outside, that act as artificial CL and keep the animal under progesterone effect and suppress the gonadotrophin release. It is kept for 14 days and then when it is removed, animal comes to heat after 1-4 days. (E2 in higher doses may act as luteolytic effect on growing CL). o PRID also causes low conception rate as the gamete transportation is adversely affected. So decided to keep it for 9 days instead of 14 days and also give a single shot of PGF2α 24 hours before the removal of devices. o Synthetic progesterone a norgestamate is used for estrus synchronization as ear implant or injection. It preparation is sycnhromat B. it has ear implant + norgestamate injection + estradiol. Estradiol has luteolytic function and interferes with CL formation. It is kept for 9 days. o Used for the suppression of heat in female animals. As in show animals 5-6 days before expected date of heat give allyltrenbolon (altrenogest, regumate) as a feed mixed progesterone source (2.2 mg/ml) and dose required in mare is 33 mg per mare per day for 15 days. 5-7 days after removal animal comes to heat. o P4 also used to get delay heat (means to postponed estrus). This can be used in synchronization of mare. (Rgumate contains allyltrebolone) o In bitch and cat P4 will interrupt the heat and postpone the heat. As the bitch enters in proestrus (bleeding starts) give the tablet (medroxy progesterone acetate salt. (Proestrus in bitch is 9-10 days). Dose rate is 10-20 mg daily for four days then give half dose (5-10 mg) for next 12 days. o During anestrus period 5-10 mg for 40-60 days this is given. But the long term effect may cause the problem. Cystic endometrial hyperplasia will appear. This can lead to the pyometra in bitches. o Also used as synthetic product melengestrol acetate (MGA) in feed mix for heifers (feedlot heifers) to get growth promoting effects. In ruminants we need N balance maintenance. In cyclic heifer it stops ovulation, the follicles will form of bigger size and release more estrogen for a longer time thus have the anabolic effect on growth. o In human being it may act as the contraceptive

PCS - Questions 1. 2. 3. 4. 5. 6. 7. 8. 9.

Which breed of goat is imported from Bangladesh? Which breed of cattle in Pakistan is called “Lola” and why? Buffalo show more silent heat as compared to cattle, why? Why vaccine is not effective against protozoal diseases? How we can maximize the nutritive value of wheat straw? What is mastitis? How we can identify under microscope? What are common names of BQ, PPR and Rinderpest? Difference between fodder and forage? What is fat percentage of buffalo and cattle milk?

A KEY GUIDE FOR 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.

PCS

& OTHER COMPREHENSIVE EXAMS

23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57.

Express the and TDN formulae and apparatus used for their determination? What is meant by “Punjkalian”? Why the colour of the buffalo is black? What is difference between heat stroke and fever? Why antipyretics are not effective in case of heat stroke? What is meant by Black gold of Pakistan? Name the tick-borne diseases? What is the difference between feed efficiency and FCR? Name the summer and winter forages? Which feed should be used to increase fat contents of milk? If Pakistan wants to import the semen, from which country it should be imported New Zealand or Australia? Define hormone, enzyme and pheromone? If there is an outbreak of FMD in a herd, from where sample should be taken and medium used? Name the disease which is most prevalent in dairy industry? What is difference between contagious and infectious disease? What is difference between anthraponosis and zoonosis? What is difference between hematuria and hemoglobinuria? Why buffalo swim more than other animals like cattle? What is difference between ewe and doe? Term triple P "PPP" stands for, in reproduction? Is there any increase in temperature of an animal infected with rabies-virus? What is speed of rabies virus to propagate during incubation period? What is difference between bellowing and wallowing? In which disease, mandibular edema is more pronounced and why it occurs? What is flushing? How fumigation is done and what is the ratio in its composition? What is omphalitis? Why vaccine is not effective against mastitis? What is love hormone? What is the clinical use of oxytocin in male animals? Why postparturient hemoglobinuria occur and what is its treatment? In international ranking, what is the position of Pakistan in milk producing countries? What is meant by white revolution? In case of BQ (black quarter) which muscle(s) is/are more affected? Where BQ occurrence is more, in hilly areas or plain areas? Normal physiological body temperature of chicken? How horse sleep? and what is stay apparatus? Enlist dairy breeds of Goat found in Punjab? Enlist dairy breeds of Cattle of Pakistan? "Pak Angora" breed is developed by the cross of which breeds? What is mohair? How parasite harm the animal/host? What are the side effects using overdose of different dewormers? What would happen if antibiotics are used long time? What would happen if steroids are used long time? In case of pneumonia, steroid show good result, what is the reason? Why tetracycline is contraindicated in cats? How many serotypes of FMD are found? Which one is more common in Pakistan?

101

Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

21. 22.

58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. 91. 92. 93. 94. 95. 96. 97. 98. 99. 100. 101. 102. 103. 104. 105.

What is difference between cruncle and cotyledon? What is "Erythritol"? What is the internal temperature of AV? What is the difference between Flehman's and Ferguson's reflex? What are the side effects of oyxtocin use in reproduction of animals? First heat of life or after parturition, in cattle/buffalo is always silent, why? Why the color of the milk is white? What is difference between sterile and infertile? Overdose of steroids cause hardening of inflammation but normally it should be antiinflammatory, why? What are the clinical uses of magnesium sulphate in veterinary practice? What is the difference between trypanosomiasis and trypanosomiosis? What is the mode of action of oxyclozanide and levamisole? Which part of digestive tract of horse is absent? Which part of ruminant stomach is absent in camel? What is vaccination schedule of buffalo and cattle? Toxocara vitulorum – what is signs and symptoms, and route of transmission? Site of infection; Paramphistomiasis and fascioliasis? What is Monday morning disease? Name the Milk-borne diseases? Enlist more pronounced signs of tetanus? EPG stands for? PVMC stands for? PCS stands for? Which part of the stomach of ruminant is called true stomach and why? Differentiate between secretion and excretion? What are major causes of RFM (placental retention)? Different period of fodder shortage in Pakistan? Different precautionary measures to control ticks on farm level? What you will suggest to improve dairy industry in Pakistan? What is the breeding season of buffalo and cattle? Define poultry? What is meaning of FCR = 1.5? Define medicine? What is bleating? What are causes of vaccine failure in field condition? How many types of vaccine available, on adjuvant? Name the few drugs that can be used to start/enhance the rumen motility? Name the few life saving drugs? Difference between anti-dote and agonist? Difference between tympany and bloat? Difference between fermentation and respiration? What is meant by F1 generation in breeding plan? Can we vaccinate a pregnant female? A calf is presented to you, showing excessive salivation and there is no temperature, what is your diagnosis? BIPP stands for? and what is its use? What is heifer? Apparently what are differences between cattle and buffalo? Common or vernacular names of Tetanus, Mastitis and Milk fever?

A KEY GUIDE FOR 106. 107. 108. 109. 110. 111. 112. 113. 114. 115. 116. 117. 118. 119. 120. 121. 122. 123. 124. 125. 126. 127. 128. 129. 130. 131. 132. 133. 134. 135. 136. 137. 138. 139. 140. 141. 142. 143. 144. 145. 146. 147. 148. 149. 150. 151. 152. 153. 154. 155. 103

PCS

& OTHER COMPREHENSIVE EXAMS

Why hemonchus contortus is called Barber pool worm? Why dog keep up one hind leg during act of urination? After the age of 1 year? How tie is formed during copulation of in canine (in dog)? TVT stands for? What is its effect on chromosomal number? Why camel always urinate with extended hind legs? Define puberty? Difference between estrus cycle and estrus period? Define; line breeding, inbreeding and cross breeding? Difference between hematoma and edema? Difference between abscess and pus? Define the ; veal, white meat, beef, mutton. Difference between cream, ointment and lotion? What are antibiotics? What are losses due to external parasites? If liver of animal is damaged; what would be the signs and symptoms? Difference between signs and symptoms? How you will differentiate between fungal diarrhea and diarrhea in Johne's disease? What is rigor mortis? Why putrefaction occur in dead animals? Define infection and infestation? What is elective surgery? What is vaccination schedule for broiler (poultry)? What are five freedoms of animal in welfare point of view? Define livestock? What are the main problems in development of dairy industry of Pakistan? Why exotic dairy breeds of cattle not perform well according to standard? What are the problems faced by exotic dairy breeds in Pakistan? What is the reason that some people are not ready to adopt AI technique for animals? How we can stop the fungal growth in silage? The big problem in poultry is "Mycotoxins" Name the two mycotoxins? What is the relation between pH and fungal growth and bacterial growth? Why extremities are cool in case of fever? What is thawing? What is its effect on sperm life? Define fever and hyperthermia? What is mode of action of ivermectin and its dose? Why Ivermectin is not effective against liverfluke? Define Pathology? What is procedure of progeny testing? How you will differentiate between hematuria and hemoglobinuria? Different uses of KMNO4 in vet practice? Normal rumen motility per min in case of cattle and goat? No antibiotic is recommended in ruminant orally, why? What is major difference between large intestine of bovine and equine? What is colostrum and its composition? What are the causes of dystockia from fetal side? Define exocrine and endocrine gland with examples? Why are different types of placenta in animals? Enlist five cardinal signs of inflammation? What is Os-cardis and Os-penis? Define architis and salpingitis? Compiled & Presented by: MUHAMMAD SAJJAD HUSSAIN

156. 157. 158. 159. 160. 161. 162. 163. 164. 165. 166. 167. 168. 169. 170.

Name the hormone which starts reproduction (mother hormone) Apparently what is the difference between sheep and goat? What is gestation period in camel? Define cloning. In case of tetanus, what is the major issue for death of animal? From where prostaglandin is secreted in buffalo/cattle? Name the reservoir hosts of rabies virus (Lyssavirus). How it comes in dog? In case of insecticide poisoning, is there any increase in body temperature? What is gross tetany and how it occurs? What is difference between regurgitation and rumination? What would be the result (side effects) of overdose of different dewormers? What is difference between serum and plasma? Does rabbit do regurgitation? Why antipyretics are not effective against hyperthermia or heat stroke? Drugs contraindicated in Cat: Tetracycline, Chloramphenicol, Aminoglycosides Gresiofulvin, Amphotericin B Aspirin, Dipyron Phenylbutazone Acetominophen Opiate derivatives. ----------------------------------------------------------------------------------------------------------------

Compiled & Presented by:

MUHAMMAD SAJJAD HUSSAIN Student of DVM (Final Year) Faculty of Veterinary Science University of Agriculture, Faisalabad For your and Suggestions: Email: [email protected] Cell: +92 322 6272278 Website: www.dvmdocs.webs.com For Free Veterinary eBooks Visit: www.dvmdocs.tk

To Get SoftCopy of PCS-Key Guide : 0322-6272278 Sole Distributor and Publisher:

UNIVERSITY PHOTOSTAT SHOP

Liaquat Hall, University of Agriculture, Faisalabad (Hafiz Zaheer Ahmad: 03016071073