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