- -  AGRICULTURE CORE CURRICULUM  - -

(CLF3000) Advanced Core Cluster:  ANIMAL SCIENCE

  (CLF3150)  Unit Title:  NUTRITION AND FEEDS

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  (CLF3199)  Topic:  UNIT EXAM              Time:          Year(s) 
                                           1 hour           3 / 4        
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TOPIC PRESENTATION:  UNIT EXAM


1.  List three examples of roughages found in your area:





2.  List four examples of concentrates found in your area:






3.  Which of the roughages you have listed contains the most protein?

    ______________________

4.  Which of the concentrates you have listed contains the most protein?

    ______________________

5.  Which of the concentrates you have listed contains the most energy?

    ______________________

6.  Which contains more calcium:  alfalfa   or   corn  ?

7.  Which contains more phosphorus:  barley   or   alfalfa  ?

8.  Give three examples of feed additives:  __________________________, 

    ________________________________,  and  __________________________.  

9.  Briefly explain how all three of the above listed feed additives affects 
    production:






10. What does the term "withdrawal" period mean?



11. How might humans be effected if there are feed additives left in the 
    animal's tissue?


12. Identify are two (2) types of hormones used in livestock production?


13. How do hormones affect growth?




14. Hormones are usually administered to which livestock species?


15. You raise hogs and want to determine the amounts of two types of feed
    to mix in order to provide the least cost ration and the proper amount
    of protein to satisfy growth and maintenance requirements.

        You have three types of feed available:
============================================================================
                |                           |
     Corn       |   9.5 percent protein     |     $6.76 per 100 pounds
________________|___________________________|_______________________________
                |                           |
     Wheat      |   9.1 percent protein     |     $6.93 per 100 pounds
________________|___________________________|_______________________________
                |                           |
     Soybeans   |  43.8 percent protein     |   $321.50 per ton
                |                           |
============================================================================

     Your weaner pigs need an 18 percent protein ration.

     Your growing pigs need a 16 percent protein ration.

     Your finishing pigs need a 14 percent protein ration.

a.  For the lowest cost ration, which 2 feeds would you choose?

     ________________________   &   _______________________

b.  Give the amounts of your 2 feeds that should be mixed for the 3 rations
    above (show your work on the back using a Pearson Square):

     Weaner pigs = ________________________

     Growing pigs = _______________________

     Finishing pigs = _____________________



16. List one vitamin not synthesized by ruminants:



17. List three vitamins required in the diet of swine:



18. List three vitamins not synthesized by horses:



19. List two sources (feeds) of each of the following vitamins:

     Vitamin A  ___________________ & ___________________

     Vitamin D  ___________________ & ___________________

     Vitamin E  ___________________ & ___________________

     Vitamin B  ___________________ & ___________________


20. Which animals cannot synthesize amino acids?


21. Which animals can synthesize amino acids?


22. List three feed sources that provide all the essential amino acids:




23. Why are ruminant animals less efficient at converting feed to gain
    than swine?




24.  Even though swine are more efficient at converting feed to gain than
     are cattle, often it is nearly as expensive or even more expensive than 
     to feed them.  Why? 





25. Why is a consistent feeding regime important?




26. Define "creep feeding"?  When is this method of feeding most useful?




27. List five common nutritional diseases caused by a vitamin or mineral 
    deficiency or toxicity:

============================================================================
        disease    |      treatment       |       prevention
___________________|______________________|_________________________________
a.                 |                      |
                   |                      |
                   |                      |
___________________|______________________|_________________________________
b.                 |                      |
                   |                      |
                   |                      |
___________________|______________________|_________________________________
c.                 |                      |
                   |                      |
                   |                      |
___________________|______________________|_________________________________
d.                 |                      |
                   |                      |
                   |                      |
___________________|______________________|_________________________________
e.                 |                      |
                   |                      |
                   |                      |
============================================================================

28. What are 3 diseases that can occur if a feeding regime is suddenly
    changed or is wrong for that species of animal?






29. Calculate the rate of gain for the following:

    a.  A steer gains 250 pounds in 90 days.  What is the rate of gain?




    b.  A lamb gains 20 pounds in 90 days.  What is the rate of gain?




30. What is the feed conversion rate for a steer (number of pounds feed per 
    pound of gain) that gained 50 pounds in 30 days?  He ate 320 pounds of 
    feed to do this.




4/5/90 sg/gv

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