320 THE PRINCIPLES OF AGRICULTURE 



Chapter 15 



Note the four co-ordinate parts into which 

 this chapter on the feeding of the animal is 

 divided; namely, sources from which animal 

 food is secured, how the animal uses the food, 

 the composition of fodders, and the practice of 

 feeding. 



What is the nature of animal food? What is a fodder? What 

 must fodder contain in order to be useful? 



How is it that the animal is able to secure energy from the 

 materials stored in plants? How does the animal first expend 

 energy on the food? How may the profit in fodder be represented? 

 Why is it that some substances that contain an abundance of 

 plant-food may still be unprofitable for feeding? Name the five 

 ways in which the animal uses fodder. When the food is scant 

 and insufficient, how is it used? What is meant by "food of 

 maintenance," "food of support," and "food of production?" Is 

 all the food or material consumed by the animal of use to it in 

 building up animal tissue? Why? How does the proportion of 

 food digested vary in different animals? How does it vary with 

 the character of the food itself ? 



Name the various classes of substances which compose fod- 

 ders. To what extent is water present in fodders? What is a by- 

 product (437a)? What is the use of the water to animals? How 

 does the water content increase the value of fodder in general? 

 What is ash? From what sources do animals secure all the ash 

 that they need? What is the importance of albuminoids as fodder 

 constituents? What elements do they contain? How does the 

 composition of albuminoids vary? What are carbohydrates? 

 What is the signification of the term from the chemical point of 

 view (445ffl)? What is the particular office of carbohydrates? 

 What is meant by fiber? Discuss the importance of fats in fod- 

 ders. How is the feeding value of fat expressed (449)? 



What are the classes of fodder that are of distinct use to the 



