Unit 10 Dairy Science

Major Uses of Dairy Cattle U.S. Average Dairy Consumption 28.8 gallons of milk 26.8 pounds of cheese 16 pounds of ice cream 4.3 pounds of butter 4.3 pounds of yogurt

Milk Production Selective Breeding BST Hormone Feeding Systems Choosing superior livestock to fill herds to improve genetics BST Hormone Naturally occurring Increases milk production Controversial Feeding Systems Grazing Lots Milking Steps Cow enters the parlor Udder is cleaned and dried Milking machine is attached to the teats Cow is milked Cow is disinfected and released to her pen

Dairy Processing Milk Cheese Carefully tested Pasteurized Separated into cream and skim portions Cheese Americans eat 25 lbs. per year Bacteria culture is added for fermentation Rennet is added to speed the process Ripens at specific temperature and time