40 



in analysis was not due to the addition of foreign material but to a 

 different process of manufacture in which the starch and germ 

 were not so completely separated from the corn gluten and bran. 



Distillers' 

 Dried Grains. -Iverage Analyses and Retail Prices. 



Page II-I2. 1907. 



No. Samples, 27 



Protein (per cent), 31.03 

 Fat (per cent), 12.35 



Fiber (per cent), — 

 Price a ton, $30.72 



Distillers' dried grains vary widely in composition, the 

 variation depending largely upon the cereal from which 

 they are derived. For this reason purchasers should always note 

 the guarantee before purchasing. Corn distillers' grains are the 

 best and contain from 29-35 per cent protein. The fiber in corn 

 distillers' grains is more digestible than that found in distillers' 

 grains derived from other cereals. Distillers' grains are deficient 

 in starch and for this reason can be best utilized when mixed with 

 some feeding stuff relatively rich in that ingredient. Wheat flour 

 middlings are excellent for this purpose, a mixture of 75 lbs. flour 

 middlings and 100 lbs. distillers' grains forming a very satisfactory 

 ration. 



The two samples of Dearborn distillers' grains averaged 23.40 

 per cent protein. They cannot be considered as valuable for 

 feeding purposes as those grains containing a higher percentage. 



Rye Grains. The two samples of rye grains collected, showed 

 an average analysis of 13.65 per cent protein, 6.14 per cent fat 

 and 15.53 per cent fiber. Pound for pound they cannot be con- 

 sidered as valuable as bran. The statement has been made by 

 reputable commission men that the rye grains can be bought at the 

 present time at about two-thirds the price of bran. If such is the 

 case, they can be considered as an economical substitute for 

 bran to be used in giving bulk to a ration. 



