PART III. 



THE FEEDING OF FARM ANIMALS 



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FEEDING STANDARDS. 



Components of Body. — In the first chapter of Part I. 

 we learned that the animal body, in spite of the great 

 luiniber of different substances which are found in it, may 

 be regarded, for purposes of feeding, as composed of four 

 substances, viz., water, protein, fat, and ash. All the 

 other compounds which it contains are found in such small 

 quantities as. to be of no sigiuficance when the general 

 make-up of the body is under consideration. 



In life the body suffers a continual loss of these sub- 

 stances, and nmst receive a constant supply of materials 

 from without to replace them. The loss of water is x*eadily 

 supplied, and any fodder which is adequate in other 

 respects will in most cases contain a sufficient amount of 

 the ash ingredients ; so that in feeding, our attention is 

 chiefly devoted to supplying materials for replacing the 

 losses of protein and fat to which the body is subject. 



The Nutrients. — The replacement of these continual 



