1907.] 



PUBLIC DOCUMENT — No. 33. 



153 



available, wliile the protein is somewhat less digestible than 

 that contained in a high-grade meal; the chief difference, 

 however, in the digestibility of the two grades is to be fonnd 

 in the total dry and extract matter, decidedly lower coefficients 

 being secured from the low^-grade meal containing a high 

 fiber percentage. Cotton-seed meal of first quality should 

 contain in 2,000 pounds about TOO to 700 2)ounds protein, 44 

 pounds fiber, 380 pounds extract matter and 192 jDounds fat, 

 or 1,346 pounds digestible organic matter in one ton. A low- 

 grade meal will contain 380 pounds protein, 144 pounds fiber, 

 540 pounds extract matter and 142 pounds fat, or 1,206 

 pounds digestible organic matter in a ton. The low-grade 

 meal contains only about one-half as much of the most valu- 

 able ingredient (digestible protein) as does the high-grade 

 meal. The former meal wnll likewise require considerably 

 more energy for its digestion. 



Leaming Corn Silage. — The Teaming corn is a large dent, 

 that will usually mature its grain in Massachusetts. The 

 silage was in nice condition, and was made from matured and 

 well-eared corn. The sheep ate the silage well, continued in 

 good condition, and during the entire trial left only 25 and 

 40 grams each of the hard butts. 



Period XIII. 

 [400 grams hay, 1,600 grams silage, 10 grams salt.] 



The two sheep showed closely agreeing results excej^t in case 

 of the protein. Sheep III. digesting 10 per cent, more than 

 Sheep II. The Leaming corn is highly esteemed by many 

 farmers for silage purposes ; and the fact that it will generally 

 mature its grain, together with its high degree of digestibility, 



