Animal science

group of animals that result from breeding and selection and that have distinguishable characteristics

increase production

• domesticated in eastern asia 2900 B.C. 
• europe  1500 B.C.

domesticated in china and india before 1000  B.C.

domesticated in prehistoric times

originated in western europe  more then 2000 years ago

cheese making industry

adapted for milk on jersey island lime deficient soil

produced excellent butter

not genetically pure

dairy and beef

majority white with some brown

mud brown color

majority redish brown color with some white

regular black and white cow

light brown

redish brown with white splotches and clouds in back ground

redish brown and white mountains in back

black

grey droppy ears

beige daisy on the ground

white thin and tall

red in brush white legs

white head brown back white underside

red trees in back

dark brown white legs

brown

fence in back

all red

red and white patch of dirt

• brahman/ angus cross (3/8: 5/8)
• began in 1932

• simmental/brahman cross
• 1960

• contagious abortion and bangs disease 
• caused by infection of bacteria Brucella abortous can cause undulant fever in humans
• causes abortion of calve in months 5-8
• no treatment

• progressive degenerative disease that affects to central nervous system of cattle
• 2-8 years for it to appear

• caused by microscopic, one-celled parasites
• diarrhea
• rough coat
• loss of appetite
• weight
• emaciation

• caused by one of the smallest disease producing viruses known
• humans do not catch the virus

isolated from foot rot

• fatal metabolic disorder
• low levels of magnesium in the blood serum of cattle
• older cattle and nursing calves

• wasting disease
• caused by mycobacterium paratuberculosis
• no cure

• caused by anaerobic micro-organism, actinomyces bovis
•  treatment iodine or tetracyclines often ineffective

• Albendazole
• fenbendazole
• ivermectin
• levamisole
• morantel tartrate
• oxfendazole
• thiabendazole