THE COMPUTATION OF RATIONS 69 



If we arrange these figures in a table and add the 

 nutrients together, we shall have a statement of the 

 quantity of each constituent supplied in these feeds, 

 and will be in a position to compare with the stand- 

 ard to know what nutrients are insufficiently pro- 

 vided. This is done as below : 



Comparing the nutrients in the feeds as used 

 above with the standard, it will be seen there is a 

 deficiency in every instance. It will now be neces- 

 sary to introduce into the ration one or more other 

 feeds in order to correct the faults so evident in the 

 table. Since the greatest deficiency is in the protein, 

 we must seek a supply from among such feeding 

 stuffs as are particularly rich in protein. The oil 

 meals and the gluten meals are of this kind. If, 

 then, we add 2^4 pounds of cottonseed meal, we 

 shall very nearly approximate the standard. The 

 digestible nutrients for this feed are ascertained in 

 the same manner as before, and a second trial made. 



