Milk is nature’s most perfect food

True or False.

Dairy Science


T   F 1. Milk is nature’s most perfect food.

T   F 2. Cattle produce only about 75% of the world’s milk supply.

T   F 3. Almost one-half of the U.S. milk is exported to other countries. T   F 4. Milk supplies humans with 72% of their calcium requirements.

T   F 5. Dairy cows are inefficient converters of feed protein into food protein.

T   F 6. The first rail shipment of milk occurred in 1841 between New York

City and Chicago.

T   F 7. There are more dairy cows in Wisconsin than there are in Texas. T    F 8. The PDCA promotes the purebred dairy cattle.

T   F 9. There are no membranes that seperate the two halves of the udder

T   F 10. The inguinal canal is the only opening between the udder and the body cavity.

T   F 11. At the time of milking, almost all of the milk is in the cisterns.

T   F 12. Each lobule can contain up to 220 alveoli.

T   F 13. Fetal development of the udder is completed six months after conception.

T   F 14. Estrogen and progesterone aid in the development of the mammary gland.

T   F 15. The medial suspensory ligament is the majority of the udder’s support.


Short Answer.

  1. What are three problems or concerns associated with milk consumption?


  1. When did dairying begin?


  1. What is AMPI and what is their role in the dairy industry?


  1. List four of the seven different tissues that suspend and support the udder:


Describe each of the following breeds (give physical characteristics, area of origin, milk yields, special traits, etc.)

  1. Holstein-Friesian


  1. Ayrshire


  1. Brown Swiss


  1. Guernsey
  1. Jersey


  1. Milking Shorthorn



  1. Louis Pasteur

  2. Robert Koch

  3. Gail Bordan

  4. S.M. Babcock

  5. supernumerary teat

  6. pendulous udder

  7. edema

  8. afferent nerve

  9. efferent nerve

  10. external pudendal

  11. prolactin

  12. longifrons

  13. Europe

  1. a) a stretched or torn medial suspensory
  2. b) credited for the modern dairy c) German scientist that proved the germ

theory of diseases.

  1. d) accumulation of lymph under skin of the udder.
  2. e) subspecies of most of the modern dairy
  3. f) perfected the partial sterilization of foods (saved beer & wine industry).
  4. g) carries the stimuli from the udder to

the brain.

  1. h) artery and vein that enter into mammary


Short Answer.

  1. i) extra teats that are usually j) patented condensed milk in 1856.
  2. k) initiates lactation at the time of parturition.

1) perfected a chemical test to determine the fat content of milk in 1890.

  1. m) motor nerves playing no role in milk secretion.


  1. What is the difference between epithelial cells and myoepithelial cells?


  1. What is incomplete milking and why should a dairy farmer be concerned with it?


41-50. Draw a diagram of a duct system of one quarter and use the following terms to label it: lobe, teat meatus, major ducts, teat cistern, Furstenburg’s rosette, alveoli, lobule, minor (small) ducts, annular fold, gland cistern.

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