1911.] PUBLIC DOCUMENT — No. 31. 75 



On the basis of the experiments and estimates made by K di- 

 ner, allowing for losses in the («) ftEces or undigested material, 

 {[)) incompletely used material or urine, (c) work required in 

 the processes of digestion and assimilation, the following net 

 energy values (expressed in therms ^) are calculated in 100 

 pounds of the several feeds: alcohol grains, 80.2; gluten feed, 

 77.8-; rye grains, 54.9 ; wheat bran, -19. It will thus be seen 

 that the alcohol distillers' grains and gluten feed ajiproach each 

 other quite closely in feeding value, and likewise the rye grains 

 and wheat bran. 



A carefully conducted feeding trial with 6 cows,- in which 

 a good quality of alcohol distillers' grains was compared with 

 gluten feed, led to the following conclusions : — 



1. The experiment has shown the distillers' grains to be fully 

 equal, if not rather superior, to standard gluten feed in their 

 nutritive value, and Avithout objectionable effect on the health 

 of the animal, 



2. Their bulky nature enhances their value as a grain feed 

 for most kinds of farm stock. 



3. The flavor and keeping quality of the milk appeared in no 

 way to be affected Avhen this food constituted one-half of the 

 daily grain ration. 



It must be understood that grains that have undergone serious 

 fermentation before drying cannot be considered as a first-class 

 food, and their use is not recommended for either dairy animals 

 or for horses. 



(/) How fo use the Grains. 

 For Horses. — Plumb,^ as a result of feeding distillers' 

 grains to horses, found that some of the animals did not relish 

 the product. The Massachusetts Agricultural College has fed 

 its farm horses, with excellent results, a ration containing one- 

 fourth distillers' grains ; Pott * reports favorably on the use of 

 CA/2 pounds distillers' grains in place of 8 pounds oats; also 



' The therm represents the amount of heat required to raise 1,000 kilograms of water 1° C. It 

 is fo be preferred to the small or large calorie as a unit of measurement, because it can be expressed 

 in fewer figures. 



2 Bulletin 94, Hatch Experiment Station, pp. 6-10. 



' Bulletin 97, Indiana Experiment Station. 



* Handbuch der tier. Ernahrung, etc., vnn Pott, ITT Band, p. 29.3. 



