312 MASS. EXPERIMENT STATION BULLETIN 181. 



digestibility of the hay; this condition was particularly pronounced in 

 case of the fiber and to a lesser extent in the extract matter, and is in 

 accord with the accepted teaching of the favorable influence of a protein 

 concentrate on the fiber and extract matter of a basal ration ha\ang a 

 wide nutritive ratio. 



The digestibility of the protein varied in proportion to the digestibility 

 of the extract matter, and is shown to be quite well utilized. The fat 

 show^ed wide variations, due in part to the small amount present, and in 

 part to other causes. The ash content of gluten feed is not large, and in 

 most cases more ash was excreted from the total ration than was con- 

 tained in the gluten feed fed, so that coefficients for this ingredient cannot 

 be deduced. 



Average Coefficients for All Results. 



Different lots, 7 



Number of single trials, ......... 32 



Dry matter 91.08 



Ash, 



Protein 86. 12 



Fiber 124.21 



Nitrogen-free extract, . . . . . . . . .93.57 



Fat 72.39 



The average results for all samples indicate very clearly that gluten 

 feed is a highly digestible nitrogenous concentrate, and that in all prob- 

 ability it exerts a favorable influence upon the digestibility of a basal 

 ration having a wide nutritive ratio. 



Summanj of Coefficients for Diamond Gluten Meal. 



« Results from Sheep III. and V. omitted from average. 



A combination of 300 to 400 grams of hay, 125 grams'of potato starch, 

 and 100 to 125 grams of Diamond gluten meal were fed as a basal ration 

 in order to study the digestibility of distillers' dried grains and corn 



