Utilization of the Sweet Potato 



29 



Attention is called to the fact that there is very 

 little difference in apparent feeding value. There is, 

 however, about two and one-half times as much nitro- 

 gen free extract and considerably more dry matter in 

 the potato silage; and experience showed the potato 

 silage to be from 50 to 100 per cent more valuable. 



In a test lasting forty-three days, divided into twenty- 

 day periods vyith three days between periods for the 

 purpose of changing feeds, the following results were 

 secured ^ : " Ten cows were used in the test and were 

 divided into two lots of five cows each. During the 

 first period each animal in lot one was given the follow- 

 ing daily ration; wheat bran 8.4 pounds, cotton-seed 

 meal 2.8, and sweet potato silage 10.6 pounds. Each 

 animal in lot two v?as given the following daily ration ; 

 Wheat bran 8.4 pounds, cotton-seed meal 2.8, and 

 sorghum silage 15.2 pounds. 



" During the second period feeds were reversed, that 

 is, the cows in lot one were given the feed that lot 

 two had received and those in lot two were given the 

 feed that lot one had received. 



" During the experiment the cows fed sweet potato 

 silage, wheat bran and cotton-seed meal produced 2641 

 pounds or 30Y.1 gallons of milk. During the same 

 1 Jno. M, Scott, Press Bull. 274, Fla. Ixp. Sta, 



