1. Principals of Animal Diseases
Animal Science II

2. Causes Infectious Noninfectious Caused by microorganisms
Faulty nutrition
Metabolic disorder
Trauma
Toxic substance
Congenital defects
Birth defects

3. Cattle Brucellosis Shipping fever Abortions in last ½ of pregnancy
Afterbirth retention
Sterility
Animal must be destroyed
Shipping fever
Coughing, diarrhea, fever, discharge
Common in young animals
Shipping stress
Antibiotics and sulfa drugs

4. Brucellosis

5. Shipping Fever

6. Swine Transmissible gastroenteritis (TGE) Virus (highly contagious)
100% mortality in young pigs
Vomiting, diarrhea
White, yellow or green feces
Drugs and vaccines not effective

7. TGE

8. Swine Pseudorabies Virus Fever, vomiting, convulsions, tremors
Sudden death in young pigs 24hrs after symptoms appear
Drugs and vaccines not effective

9. Pseudorabies

10. Swine http://www.thepigsite.com/DiseaseInfo/ Brucellosis
Cholera (eradicated in the US)
Scours
Drugs for drinking water
Leptospirosis
MMA
Mycoplasmal pneumonia
SMEDI

11. Poultry Aortic rupture Male turkeys 8 to 20 weeks Bleed to death
Control
Lower-energy ration
Low-level use of tranquilizers

12. Poultry Newcastle Avian pox (Fowl pox) Virus
Gasping for air, sneezing, breathing difficulty, tremors, paralysis
No known cure
Avian pox (Fowl pox)
Yellow cankers in mouth and eyes
Scabs around the head

13. Newcastle disease

14. Poultry Cocidiosis Bluecomb Blackhead Fowl cholera Erysipelas
Controlled by coccidiostats
Bluecomb
Blackhead
Fowl cholera
Erysipelas
Antibiotics

15. Treatment Prevention is the best way to control diseases Cleanliness
Vaccinations
Quarantine
Exposure
Isolation

16. Parasites
Objective
Describe the internal and external parasites of livestock and poultry

17. Parasites External Ticks Mites Lice bloodsuckers mange
Biting bloodsuckers

18. Parasites External (continued) Blowfly Heel fly Horn fly
Screwworm in larva stage
Heel fly
Cattle grub
Horn fly
Smallest, bloodsucking species
Horsefly, housefly, stable fly

19. Parasites Internal Roundworms Stomach worms Ascarids Pinworms
Bloodworms
Lungworms

20. Parasites Internal (continued) Tapeworms Flukes Broad tapeworms
Beef or pork tapeworm
Flukes

21. Parasite Problems Weight loss and loss of gain
Most costly excluding death
Major external parasite of swine
Lice and mites
External parasites of poultry
Lower production by sucking blood

22. Parasite Problems Heel Fly larva or Cattle grubs
Greatest financial loss to cattle
Lower rate of gain
Damage hides and meat

23. Parasite Problems Major internal parasite of poultry Roundworm
Several types of worms
Roundworm
Most damage to hogs by internal parasites

24. Controlling Parasites
Prevention
Most effective
Chemicals for external parasites
Systematic insecticides that spread throughout the body is most effective
Cattle grubs

25. Controlling Parasites
Deworming pigs
Sows and guilts one week befor farrowing
Protects piglets

26. Controlling Parasites
Poultry Houses
Mites, bedbugs, fowl ticks hide in daylight
Emerge at night
Cracks and crevices must be sprayed

27. Controlling Parasites
Poultry
Little problems with worms
Confinement housing offers protection
Wire cage

28. Controlling Parasites
Chemical, mechanical, biological, and cultural methods are used to reduce loss in poultry and livestock