136 DAIRY FARMING 



5. Calculate the amounts of corn and clover hay required to 

 maintain a cow weighing 1000 pounds. 



6. Find the amount of protein and energy required for a 1250- 

 pound cow producing 40 pounds of milk daily, containing 3.5 per 

 cent -of fat. 



7. From the feeds in Table 15, calculate a ration that will sat- 

 isfy the conditions in problem 6. How does the ration agree with 

 the standards on page 304 ? 



8. Find the protein and energy in the following rations : 



Ration 1 Ration 2 



Corn silage 30 Ib. Timothy hay . . . . 12 Ib, 



Alfalfa hay 10 Ib. Corn fodder 10 Ib. 



Corn 6 Ib. Corn 6 Ib. 



Cottonseed meal ... 1 Ib. Bran 1 Ib. 



What is the limiting factor in the second ration ? 

 For how much 3.5 per cent milk does each ration supply protein 

 in addition to maintaining a 1000-pound cow? 



9. Calculate a ration for a 900-pound Jersey cow giving 23 

 pounds of milk daily, using the common feeds of the region. 



10. When bran is worth $20, cottonseed meal $30, clover hay $10 

 per ton ; and corn 70 cents, and oats 50 cents per bushel, find which 

 is the cheapest source of protein. Which is the cheapest source of 

 energy ? 



11. Obtain the local prices of purchased feeds in the regioa 

 Which is the cheapest source of energy? Of protein? 



12. With prices given in problem 11, calculate the cheapest 

 possible satisfactory ration for a Shorthorn cow weighing 1200 

 pounds and giving 30 pounds of milk daily. 



13. Is skim-milk usually available for calf feeding in this region? 

 What are the common calf feeds used ? 



14. Let each student find the approximate amounts of milk and 

 other feeds used in raising a calf to six months of age for his own farm 

 or some other farm. At normal prices, what is the feed worth? 

 Have all these reports compared and averaged. Compare with 

 results on pages 115, 250 and 252. 



16. Proceed in a similar manner to find the usual method of feed- 

 ing heifers in the region. 



16. What is the usual date for turning cows to pasture in your 

 region? About what times are they taken off of pasture in the 



