588 



ANNUAL REPORT OF THE 



Off. Doc. 



Expedmeuts made by the Coinpagnie generale des omnihua of 

 Paris, with both draught and saddle horses during twenty years, 

 show that while barley can replace oats in horse rations, a somewhat 

 larger (juautity must be employed; also that barley bran i® very 

 tough, with a tendency in inferior varieties to seriously lower the 

 amuunt of digestible matter. 



A study by Richardson* of sixty samples of barley grown in dif- 

 ferent ])arts of the United States gave the following results: 



No samples of this grain have been submitted for analysis; it 

 enters, how^ever, into the composition of a number of mixed feeds 

 elsewhere discussed. 



As remarked above, barley is grown in America chiefly for malting 

 purposes. When the grain is moistened and kept at a certain temper- 

 ature it germinates, the ferments it contains become active and con- 

 vert the starch into maltose and finally into glucose, which is capable 

 of solution in water and of alcoholic fermentation by yeast. The ger- 

 minated barley is dried, freed from its sprout, which is injurious to 

 the malted liquor, and is then known as "malt," which, either alone 

 or together with other starch}^ materials whose solution it promotes, 

 is used in the manufacture of malted liquors. A very large propor- 

 tion of the protein and fat, together with some valuable carbohyd- 

 rates remain in the spent malt or grains, so that these become, in 

 turn, valuable as cattle-feeds; for this purpose they are either used 

 in a fresh, moist state or in a kiln-dried condition. 



According to Stein,t 100 parts of barley yield 92 of malt and 2.5 

 of sprouts, as follows: 



• Bulletin 9, Chemical Division, U. S. Dept. Agric, pp. 58-78. 

 t WIIde'B Oentrbl. 1860, 2 . 8-23: Jchnpon, How Crops Grow, p. 159. 



