Principles of Animal Diseases

Animal Science II

Causes

1. Infectious• Caused by _____________________

2. Noninfectious– Faulty ________________– _____________ disorder– _________________– ____________ substance– _________________ defects

• __________ defects

Cattle• Brucellosis

– Abortions in last ______ of pregnancy– _______________ retention– Sterility– Animal must be ______________

• Shipping fever– ___________, _____________, fever, discharge– Common in ____________ animals – Shipping _________________– ____________ and ____________ drugs

Swine

• Transmissible gastroenteritis (TGE)– _____________ (highly contagious)– _______ mortality in young _______– ______________, _____________– _________, yellow or green _______– Drugs and vaccines _______ effective

Swine

• Pseudorabies– __________– _____________, vomiting, convulsions,

_______________– Sudden death in young pigs _______

after symptoms appear– Drugs and vaccines _______ effective

Swine

• ___________________• Cholera (eradicated in the US)• ______________

– Drugs for drinking water

• Leptospirosis• __________• Mycoplasmal pneumonia• _______________

Poultry

• ___________ rupture– Male ________________– 8 to 20 weeks– _______________ to death– Control

• Lower-energy _____________• Low-level use of tranquilizers

Poultry• Newcastle

– ___________________– Gasping for _____, ____________, breathing

difficulty, tremors, paralysis– No known ___________

• Avian pox (Fowl pox)– ____________– Yellow ____________ in mouth and eyes– Scabs around the _______– No known cure

Poultry

• Cocidiosis– Controlled by ______________

• ______________• ______________• Fowl cholera• _____________

Antibiotics

Treatment

• Prevention is the best way to control diseases– _____________________– ___________________– ____________________– _____________________– ________________________

Parasites

• Objective– Describe the internal and external

parasites of livestock and poultry

Parasites

• External– ___________

• bloodsuckers

– ___________• mange

– ___________• Biting bloodsuckers

Parasites

• External (continued)– _____________

• Screwworm in larva stage

– __________ fly• Cattle grub

– ____________ fly• Smallest, bloodsucking species

– Horsefly, housefly, stable fly

Parasites

• Internal– ____________________

• Stomach worms• ______________• ______________• Bloodworms• _______________

Parasites

• Internal (continued)– _________________

• Broad tapeworms• Beef or pork tapeworm

– _________________

Parasite Problems

• __________loss and loss of gain– Most costly excluding death

• Major external parasite of swine– ___________ and ____________

• External parasites of poultry – Lower production by sucking _______

Parasite Problems

• Heel Fly larva or Cattle grubs– Greatest _____________ loss to cattle– Lower rate of ___________– Damage hides and ___________

Parasite Problems

• Major internal parasite of poultry– Several types of ___________

• Roundworm– Most damage to ________ by internal

parasites

Controlling Parasites

• Prevention – Most effective

• Chemicals for external parasites– _____________ insecticides that spread

throughout the body is most effective• Cattle grubs

Controlling Parasites

• Deworming pigs– Sows and guilts ____ ___________

before farrowing– Protects _____________

Controlling Parasites

• Poultry Houses– Mites, bedbugs, fowl ticks hide in

_____________– Emerge at _____________– Cracks and crevices must be

______________

Controlling Parasites

• Poultry– Little problems with ___________

• Confinement housing offers protection• Wire cage

Controlling Parasites

______________, ______________, ____________, and ______________ methods are used to reduce loss in poultry and livestock