ANSC 1000 TEXTBOOK REVIEW -- CHAPTER 28 -- DAIRY
In our overview of the livestock industries, it was recommended
that you read the following chapters in Scientific Farm Animal
Production (8th Ed.) by R. E. Taylor and T. G. Field.
Chap. 2 An Overview of the U.S. Animal Industries
Chap. 26 Feeding and Managing Beef Cattle
Chap. 28 Feeding and Managing Dairy Cattle
Chap. 30 Feeding and Managing Swine
Chap. 32 Feeding and Managing Sheep
Chap. 34 Feeding and Managing Horses
The following review questions are intended to point out and
help you understand some of the major points in the reading
material.
CHAPTER 28 - Feeding and Managing Dairy Cattle
25-1. Dairy operations are getting larger, but the average
operation has how many milk cows?
a) 25
b) 50
c) 100
d) 200
25-2. The average 305-day milk production per cow in the U.S.
is how many pounds?
a) 100
b) 12,000
c) 15,500
d) 25,000
25-3. Top producing cows may produce more than 40,000 pounds
of milk in a year. (True or False)
25-4. In early lactation a high producing dairy cow is in a
negative energy balance situation. What does this mean?
25-5. Body condition scores tell a producer what information
about his cows?
25-6. Milk production peaks when?
a) 1 month
b) 2-3 months
c) 4-6 months
25-7. Most dairy rations are based on roughages. Why?
25-8. When silages and concentrates are mixed together before
being fed to cows, this is known as what?
25-9. High producing cows generally need more of what in
their diets (compared to lower producing cows)?
a) protein sources
b) mineral feeds
c) energy feeds
d) all of the above
25-10. Many dairy farms use feeding stations to feed cows
based on need for milk production and to control the
concentrates a cow eats. What two advantages does this
offer?
25-11. In the last two months of lactation, a cow will milk
more if fed high levels of concentrates.
(True or False)
25-12. Which feeds are higher in calcium?
a) forages
b) grains
c) corn meal
25-13. Which feeds are higher in phosphorus?
a) forages
b) grains
25-14. Dairy producers plan a 50-60 day dry period for their
cows. Why not shorten this dry period?
25-15. Why should dry cows be managed separately from the
lactating cows?
25-16. Why should a producer prevent his cows from getting too
fat (other than the extra feed costs)?
25-17. At what age should heifers begin their first lactation?
a) 18 months
b) 24 months
c) 30 months
25-18. Generally, dairy bulls are not kept on dairy farms.
(True or False)
25-19. What does the colostrum provide for a newborn calf?
25-20. Dairy calves normally are removed from their mothers
shortly after birth. (True or False)
25-21. Dairy calves are separated from each other and raised
by themselves. Why?
25-22. At what age can calves consume dry feeds?
a) 14 days
b) 30 days
c) 45-60 days
d) 90-120 days
25-23. The specialized milking facility is called what?
25-24. Describe the milking process, particularly telling how
the milk machine operates.
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