No. 6. 



DEPAKTMEN.T OF AtJlClCULTUltE. 



603 



In goueral, tliis ;iii;ilysis coii-csponcls closely to the (jrernian analj- 

 iscs earlier given. The conversion of the starclies to sugars and 

 the extraction of the latter aijjx'ar to have been quite completely 

 eftected. 



Here, as in the brewers' grains, most of the nitrogen-free extract 

 is composed of materials of distinctly inferior nutritive value as 

 compared with sugar and starch. 



Recently, analyses have been made in the Station laboratory of 

 various samples of dried distillers' grains, the results of which 

 are here presented. 



other, Partial Analy- 

 ses (4) 



> a 

 < 



r 



Moisture, 



Ash, 



Protein : 



Crude fiber 



Nitrogen-fiee extract 

 Fat 



6.S6 

 1.85 

 33.00 

 10.97 

 32.67 

 14.65 



100.00 



.06-10.85 



31.19-34.81 



7.94-13.02 



8.67 



32.89 



11.50 



These figures differ distinctly from those of European analyses. 

 The Marburg samples showed from 14.4 to 27.7 per cent, of protein, 

 from 10.8 to 18.0 per cent, of fiber, from 34.5 to 53.9 per cent, of 

 nitrogen-free extract, from 5.1 to 16. 1 per cent, of fat, and from 

 1.0 to 4.5 per cent, of ash, the moisture being the same as in the 

 Pennsylvania samples. High protein, high fat, and low fiber and 

 nitrogen-free extract characterize the American distillers' grains 

 now offered upon the market. The digestibility of the several 

 groups of constituents is probably not very different from that 

 observed with respect to those of European grains. 



These anahses show the materials to be especially rich in protein 

 and fat. In these particulars they compare closely with the oil- 

 cakes, but are of less value as to the nitrogen-free extract. 



These grains have given excellent results as food for dairy cows. 

 It is sometimes complained that the peculiar odor is imparted to 

 the milk; but the best evidence I have found upon that point, indi- 

 cates that the odor passed directly from the grains to the milk 

 rather than through the cow. Their composition also suggests that 

 they may make an excellent food for both road and draught horses. 



