REVIEW 183 



is to be attained. This explains the known fact that young birds 

 develop best when given an extensive green range and likewise 

 hens lay better when given milk or meat and plenty of green food. 

 The peculiar active agent possessed by these so called protective 

 foods is at present undetermined, but has been designated 

 vitamines by Dr. McCullum. 



REVIEW. 



1. Compare poultry with other farm animals. 



2. Compare a hen with a cow as a transformer of raw materials. 



3. What is the temperature of a fowl's body, and how does it affect the feed 



requirements? 



4. Give the composition of a fowl's body. 



5. Discuss the following components in detail: (a) Water, (b) ash, (c) pro- 



tein, (d) fat. 



6. Define nutrition; nutrient. 



7. Name three important nutrients and give their general composition. 



8. Give the uses of the following nutrients in the body: (a) Protein, (b) car- 



bohydrates, and (c) fat. 



9. Discuss digestibility of feeding stuffs. 



10. Xame and discuss the three objects of feeding. 



11. Compare maintenance requirements of the capon and the hen. 



12. Discuss requirements for growth. 



13. Discuss feed requirements for fattening. 



14. Compare production requirements of large and small hens. 



15. Wliat are the possible uses of feeding standards? 



16. Discuss the relation of feed to product. 



17. Enumerate ten factors which must be considered in studying the principles 



of poultry feeding. 



18. How and when may stimulating feed be used? 



References. — Feeding of Laying Hens, by James E. Rice, Cornell Reading 

 Course Bulletin 17. Digestive Experiments with Poultry, by J. M. Bartlett, 

 Maine Bulletin 184. Principles and Practices of Poultry Feeding, by H. R. 

 Lewis, Bulletin New Jersej^ Board of Agriculture. Digestion Experiments 

 with Poultry, by E. W. Brown, U. S. Bureau of Animal Industry Bulletin 156. 

 Feeding of Laying Hens, by A. G. Phillips, Kansas Bulletin 164. The Economy 

 of using Animal Feed in Poultry Feeding, by W. P. ^^^leeler, New York Bulle- 

 tin 149. The Adaptability of Concentrated By-products for Poultry Feeding, 

 by W. P. Wheeler, New York Bulletin 27. Experiments with "N^Tiole versus 

 Ground Grains, by W. P. ^Mieeler, New York Bulletin 106. Poultry Feeding 

 Experiments, by Horace Atwood, West Virginia Bulletin 88. Mineral Ele- 

 ments in Animal Nutrition, by E. B. Forbes, Ohio Bulletin 201. 



