63 



Inchidino- this wasted material, the average cost of 

 food for one pound of butter were 12.3 cents with the 

 co\^'pea ration, and 15.9 cents with the wheat bran ration. 

 This is a difference of 3.58 cents per pound of butter, or 

 a saving of 23 i>er cent, in the cost of food required to 

 make a i)ound of butter due to the substitution of the 

 chea]HM- cowpea hay for wheat bran costing |20 i>er ton. 



Milk <iii(l hiittcf ill 31) days from nearly equal amounts 

 of coicpca hay and wheat bran. 



In the yield of both milk and butter the cowpea ration 

 was slightly superior. 



In brief, the cows on the cowpea ration cousumcd 7 

 per cent, more of cowpea hay than the other lot did of 

 wheat bran, but in return the former afforded 11 per 

 cent, more butter than did the cows that received wheat 

 bran. So that the ]X)rtion of the cowpea hay that Avas 

 actually eaten was slightly more valuable than an equal 

 weight of wheat bran. However, including the sixth of 

 the cpwpea hay that was wasted, we find that a ton of 

 wheflt bran was equal in feeding value to 2,327 pounds 

 of cowpea hay ; a ton of cowpea hay was equal to 8(9 per 

 cent, of a ton of wheat bran, or to 1,720 pounds of wheat 

 bran. 



