FEEDS AND FEEDING 321 



nitrogen; and the minerals, phosphate and potash, are more 

 or less abundant. How much of this fertility reaches the 

 soil will always depend upon the care and use of the manure 

 from the barns. 



REVIEW 



1. Of what is the solid part of an animal's body composed ? 



2. Tell about how much of the body is water. 



3. Name three or four common forms of protein. 



4. Give the four classes of nutrients needed by animals, besides water. 



5. Name some of the common feeds rich in protein. 



6. What substances are included by the group termed "carbohy- 

 drates?" 



7. Name some feeds rich in starch. 



8. Mention three different kinds of sugar and the sources of each. 



9. Name the five animal processes necessary in changing feed to 

 animal tissue. 



10. Give examples of feeds classed as roughage. 



11. Give several examples of feeds classed as concentrates. 



12. Give some examples of crops suitable for being fed green in 

 summer when pastures are poor. 



13. Name three feeds suitable for winter succulence. 



14. How is ensilage made ? What is a silo ? 



15. Tell what you can about bran; middlings. 



16. Discuss the character of gluten meal. From what is it made ? 



17. Tell how cottonseed meal is made. 



18. Distinguish between "old process" and "new process" oil meal. 

 Which is richer in oil ? 



19. Tell what things influence the digestibility of feeds. 



20. Give two objects of feeding. 



21. What is the sole source of an animal's protein ? 



22. Name the classes of nutrients that may cause the formation of 

 fat in the animal body. 



23. Why is it more profitable to feed young animals than old ones 

 if we are to sell them by weight ? 



24. Give the weights of the several nutrients for a 1000-pound cow 

 giving milk. 



25. Of what use are feeding standards ? 



26. What is meant by a nutritive ratio of 1 to 6 ? 



27. Give the meaning of wide ratio and of narrow ratio. 



28. Why use feeds which animals crave, rather than feeds they dislike? 



29. Why do farmers need to buy mill feeds to use with farm feeds? 



30. Why is it better to buy mill feeds than it is to buy commercial 

 f ertihzers ? 



References. — U. S. Farmers' Bulletins: 22, The Feeding of Farm 

 Animals; 36, Cottonseed and Its Products; 49, Sheep Feeding; 142, 

 IMnciples of Nutrition and Nutritive Value of Food; 170, Principles of 

 Horse Feeding; 295, Potatoes and Other Root Crops as Food; 298, 

 Food Value of Corn and Com Products; 346, The Computation of 

 Rations for Farm Animals by the Use of Energy Values; 411. Feeding 

 Hogs in the South; 441, Japan Clover; 451, Clover, pp. 7-10; 457, A 

 Reinforced Brick Silo, pp. 23-24. 

 21 



