49 



Brewers' Dried Grains. 'V\\c use of Brewers' dried grains is 

 evidently increasing. T\vent\ -one samples were collected. These 

 vary sonie\vhat in chemical composition due to the different 

 grains used in the brewers' mash. At the present time (October, 

 1916) brewers' grains are being sold at about six dollars a ton 

 less than the price asked for wheat bran. At this figure they 

 form a satisfactory substitute for wheat bran in the dairy ration. 

 They can also be used as a partial substitute for oats in feeding 

 horses. One-fourth of the horse ration may consist of brewers' 

 grains, one-fourth oats and one-half corn; or, one-half oats and 

 one-fourth corn with onc-fbuiih brewers' grains. 



Average Analyses and Retail Prices. 

 Malt Sprouts. 



1913 1914 1915 1910 



No. Samples 4 8 3 3 



Protein (per cent) 27.55 26.62 24.14 26.77 



Fat (per cent) 1 . 14 1 . 28 1 . 17 1.15 



Fiber (per cent) 13.13 12.47 14.24 12 15 



Price a ton .$28 . 20 $27 . 21 $30 . 00 $28 . 00 



Brezvers' Grains. 



1913 1914 1915 1916 



No. Samples 9 10 17 21 



Protein (per cent) 25 . 63 29 . 13 28 . 87 27 . 98 



Fat (per cent) 5.93 6.12 6.48 6.88 



Fiber (per cent) 13.96 12.35 13.28 13.43 



Price a ton $29.43 $29.43 30.50 $30.44 



According to the tentative definition adopted 

 Yeast and by the Association of Feed Control Officials, 



Vinegar Grains, yeast or vinegar grains are "the properly dried 

 Page 11 residue from the mixture of cereals, malt and 



malt sprouts (sometimes cottonseed meal), 

 obtained in the manufacture of yeast or malt vinegar and consists 

 of corn or corn and rye from which most of the starch has been 

 extracted, together with malt added during the manufacturing 

 process to change the sta'rch to sugars, and malt sprouts (some- 

 times cottonseed meal) added during the manufacturing process to 

 aid in filtering the residue from the wort and serve as a source 

 of food supply for the yeast." 



Yeast and vinegar grains approximate rye distillers' grains 

 in composition. They should not be confused with corn distil- 

 lers' grains nor fed as a substitute for them if equally good results 

 are expected. They have sold at a much lower price and can be 

 considered an economical feeding stuff. 



