CIIAPTEE lY. 



FEEDING WORKIK-G ANIMALS. 

 1 1. Intbobuctoey. 



In regard to tlie amounts of the Beveral nutrients needed 

 in the fodder of working aniniaL, we have as vet, unfor- 

 tunately, scarcely any exact experiments, and can there- 

 fore, for the present, form an opinion only from the 

 general laws of animal nutrition or on the basis of practi- 

 cal experience. 



Working Animals must be "well fed. — We know that 

 the animal body needs, lirbt of all, a nmscular system 

 which is developed and inured to work, to render it capa- 

 ble of hard and contimied labor, and also that the body 

 nnibt be tolerably lich in both oi-ganized and circulatory 

 protein, in order to f urnibh materials for the processes ex- 

 plained in the chapter on the production of work. In 

 order to reach and maintain this condition more nutriment 

 and a narrower nutritive ratio are necessary than simply 

 for the maintenance of renting animals. 



Need of Protein.— -During work, as we have learned, 

 no more protein is destroyed than under the same circum- 

 stances without work. At the same time, the protein is an 

 essential factor in the production of work, and only when 

 its amount is rendered sufficiently large by a correspond- 

 ingly large supply of it in the food is the body capable of 

 continued and severe exertion. 



