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Got Milk?

Got Milk?. Original Power Point Created by Casey Osksa Modified by Georgia Agricultural Educational Curriculum Office June 2002. Milk. Most wholesome & complete food Oldest agricultural industry dates back 7,000 years. Care of Milk. Milk is easily contaminated with bacteria

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Got Milk?

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  1. Got Milk? Original Power Point Created by Casey Osksa Modified by Georgia Agricultural Educational Curriculum Office June 2002

  2. Milk • Most wholesome & complete food • Oldest agricultural industry • dates back 7,000 years

  3. Care of Milk • Milk is easily contaminated with bacteria • udder is close to ground • Cows can carry Brucellosis • causes undulant fever in humans • cows are tested each year • Pasteurization: heat to 161 degrees F for 15 seconds • kills bacteria

  4. Dairy Breeds • Holstein: most popular breed in U.S. • largest breed • most milk production • lowest butterfat in milk • black & white • Jersey: smallest breed , light brown color • least milk • most butterfat • fat on meat is yellow (butterfat)

  5. Holstein (Dairy)

  6. Jersey (Dairy)

  7. Dairy Breeds • Guernsey: milk is yellower due to high content of carotene • Ayrshire: newest breed, looks like Holstein but red & white • good foragers • Brown Swiss: oldest breed, dual purpose breed (meat & milk)

  8. Guernsey (Dairy)

  9. Ayrshire (Dairy)

  10. Brown Swiss (Dairy)

  11. Milking • Dairy cows require lots of high quality feed, lots of concentrates & water • Dairies milk 2-3 times / day • udder is washed & dried • primed by hand • milking machine pipes milk to a cooling tank • dip teats in iodine to disinfect & close sphincter muscle

  12. Milking • Any cows treated with antibiotics, milk is not suited to humans • can cause a whole truck of milk to be dumped out due to contamination • Lactation period = 10 months, dry = 2 months • Freshen: cows calve and begin to lactate • Colostrum: mothers first milk, loaded with antibiotics etc. for the calf • first 3 days milk from a cow can’t be fed to humans (feed to calf)

  13. Milking • Calves are usually not allowed to nurse from their mother • bottle fed colostrum, then milk replacer or cows milk

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