80 



HATCH EXPERIMENT STATION. [Jun 



filler, and (juite a noticeable per cent, of fat. It i.s guaran- 

 teed to contain 18 to 20 per cent, of protein and 6 to 8 per 

 cent, of fat, and usually meets these requirements. It has 

 not 1)een found to be very generally distributed. 



Digestihiliti/ of Blbhifs Dalnj Cake. 

 The average results of six single trials with sheep are here 

 ofiven, together with the coefficients for standard wheat mid- 

 dlings and gluten feed for comparison. The full details of 

 the digestion experiment have been reported in the seven- 

 teenth report of this station. 



Coefficients of Digestibility . 



In the several trials with Bibby's dairy cake the sheep 

 experienced considerable difficulty in digesting the crude 

 fiber, due probably to the fact that it was derived largely 

 from cotton-seed hulls. It ma}' be said that the total cake 

 })rovcd moderately digestible, the fiber having a low and the 

 fat a high digestibility. Both in chemical composition and 

 in digestibility Bibby's dairy cake closely resembled standard 

 wheat middlings. Gluten feed contains 5 to 6 per cent, 

 more protein, and is more digestible than the cake. 



Cost of Digestible Matter. 



Bibby's Dairy 

 Cake. 



Standard Wheat 

 Middlings. 



Gluten Feed. 



PoundB digestible mattor in 2,000 



pounds. 

 Cost of one pound (cents), , , 



1,232 

 2.43 



1,314 

 2.11 



1.72 



