yo6 



NUTRITION OF FARM ANIMALS 



This ration shows as close an agreement with the computed 

 protein requirement as could be desired, but contains a slight 

 surplus of energy. The comparatively low figure for dry mat- 

 ter indicates that more coarse fodder might have been used had 

 it been available, with the probable effect of cheapening the 

 ration. As it is, we have used the feeds relatively lowest in 

 price and apparently have a very economical ration. 



Cottonseed meal, however, is nearly as cheap as a source of 

 energy as gluten meal, while it contains considerably more pro- 

 tein. It seems worth while, therefore, to see whether it may 

 not be possible to secure the necessary protein more cheaply by 

 using a smaller amount of the former feed in place of the gluten 

 meal. Three pounds of cottonseed meal will supply almost 

 exactly the same amount of protein as 3^ pounds of gluten meal. 

 Making this substitution, the ration stands as follows : 



This ration agrees with the computed requirements even better 

 than the previous one, while a simple comparison shows that it 

 is a trifle cheaper. The grain portion of the two rations costs 

 as follows: 



