142 Feeds and Feeding. 



plied in reasonable quantity, and fed while fresh in clean, water- 

 tight boxes and along with nutritious hay and other roughage, 

 there is no better food for dairy cows than wet brewers' grains. 

 So great is the temptation to abuse, however, that wet grains 

 should never be fed to dairy cows unless under the strict super- 

 ivision of competent officials. If this cannot be done, their use 

 should be prohibited. 



175. Dried brewers' grains. By removing practically all of the 

 moisture from wet grains by means of the vacuum process, a 

 concentrated product known as " dried brewers' grains" is ob- 

 tained, which is no more perishable than wheat bran. Dried 

 brewers' grains are rich in both crude protein and fat, with con- 

 siderable fiber due to the barley hulls. They are low in carbo- 

 hydrates, which in these grains are largely pentosans. 1 (3, 82) 

 Dried brewers' grains are an excellent concentrate for dairy cows, 

 ranking with bran and oil meal in palatability and general good 

 effects. (648) The Massachusetts (Hatch) Station 2 found them 

 cheaper than oats for horses and as satisfactory, especially for 

 those at hard work and needing extra crude protein. From one- 

 third to one-half of the concentrates in the ration for horses may 

 consist of dried brewers' grains, and the remainder of either corn 

 or oats. (421) Being high in fiber, dried brewers' grains are not 

 satisfactory for pigs. 



176. Malt sprouts. The tiny, shriveled barley sprouts which 

 have been separated from the dried malt grains are rather low in 

 carbohydrates and fat, but carry about 20 per ct. of digestible 

 crude protein, one-half or more of which is amids. (5, 78) Tho 

 rich in crude protein they are not relished by stock, and should be 

 given in limited quantity in combination with other concentrates. 

 The Massachusetts (Hatch) Station 3 found that cows would not 

 eat over 2 or 3 Ibs. of malt sprouts daily. (649) They absorb much 

 water and should be soaked several hours before feeding. 



Y. RYE AND ITS BY-PRODUCTS. 



Rye, the principal cereal of the northern European countries, 

 is not extensively grown in America. Tho it repays good treat- 

 ment, this "grain of poverty" thrives in cool regions on land that 

 would not give profitable returns with the other cereals. Since 

 it furnishes about one-third of the people of Europe with bread, 



1 Mass. (Hatch) Expt. Sta., Bui. 94. 2 Loc. cit. 3 LOG. cit. 



