CHAPTER XVI 

 RETURNS FROM ANIMALS 



IN any well-considered plan of farm op- 

 erations it is essential to have some basis 

 for estimating the amount of food required 

 to carry live stock through the year in order 

 to know, on the one hand, what portion of 

 the crops raised are available for sale and, 

 on the other hand, what food supplies must 

 be purchased. A requisite of any successful 

 farm enterprise is a proper consideration of 

 these market conditions. While domestic 

 animals consume a variety of foods, and 

 each class of animals has special food 

 requirements, the basis of calculation of the 

 needed supplies is fortunately not compli- 

 cated. Twenty-five pounds of dry matter 

 are required per day for each thousand 

 pounds of live weight of horses, cattle and 

 sheep, and for swine about 40 pounds for 

 each thousand pounds of live weight. It 

 may be more convenient to calculate the 

 food requirement of swine on the basis of 

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