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Mr. Bailey Agri-Science

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The Dairy Industry. Mr. Bailey Agri-Science . Where does the milk come from?. Process of producing milk is called lactation Occurs after birth of a calf Milk production occurs in the udder. Mammary Gland (Udder). How do I get the milk out?. Cows are milked by machines

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mr bailey agri science




Mr. Bailey


where does the milk come from
Where does the milk come from?
  • Process of producing milk is called lactation
  • Occurs after birth of a calf
  • Milk production occurs in the udder
how do i get the milk out
How do I get the milk out?
  • Cows are milked by machines
  • Udder is cleaned before and after milking
  • Helps to avoid contamination
milk i m going on a trip
Milk- “I’m going on a trip”
  • Goes to processing plant
  • Checked for bacteria and infection
  • Sits for cream to raise and be removed
  • Cream contains fat
milk what happens when i get the plant
Milk- “What happens when I get the plant.”
  • Homogenization- large cream globules are reduced to the size of the milk globules
  • Homogenized milk – cream will not separate from the milk
milk what s next
Milk- “What’s next.”
  • Pasteurization- milk is heated and cooled to kill any harmful organisms
  • Grading
    • A – beverage milk
    • B – manufacturing dairy products (cheese, butter, yogurt)
the difference in milk
The Difference in Milk
  • Whole milk- contains fat
  • 2% - contains some fat
  • 1% - contains little fat
  • Skim- contains no fat

A gallon of milk weights between 8.5 - 8.8 lbs. depending on fat content.

milk processing video
Milk Processing Video
common breeds of dairy cattle
Common Breeds of Dairy Cattle
  • Holstein – 90% of U.S. dairy cattle
  • Jersey – high in butterfat and protein
  • Guernsey
  • Brown Swiss
exit slip
Exit Slip
  • Identify the process milk takes from the farm to what you buy in the store based on the information learned today.