RELATION OF FOOD TO MANURE 



309 



gen, the work horse, either at rest or at work, gives 

 back all, fattening oxen and sheep retain a small 

 amount, fattening hogs a larger amount, milk cows 

 keep one-fourth, and the young calf two-thirds. 

 Nitrogen is voided largely as urine. 



Double Value in Feeds. All feeding stuffs have 

 two values feed and fertility. The commercial 



NITROGEN AND ASH IN ANIMAL PRODUCE, AND VOIDED, 

 FOR IOO POUNDS OF FOOD CONSUMED 



value in most instances is based on the feeding value 

 as compared with other feeding stuffs. But even 

 so, the fertilizing value of manure resulting must be 

 ignored no longer. To illustrate the meaning of the 

 double value of a feed, it is here assumed that cot- 

 tonseed meal has a commercial value of $27.82. This 

 is the first or fertilizing value ; and since by feeding- 

 it valuable food products are made, a second value is 

 possessed by it. 



