VARIOUS FACTORY BY-PRODUCTS 191 



and keeping quality of the feed may be somewhat decreased by this 

 method of manufacture. 11 



The gluten obtained in some factories is placed on the market 

 as a special feed called cream gluten meal. The corn germs are 

 generally kept separate and extracted, and the residue put on the 

 market as corn oil cake, or, if ground, as germ oil meal. 



The composition of these various feeds put out by different 

 manufacturers, as well as the nomenclature, differs somewhat. In 

 general, the gluten feeds now on the market contain about 25 per 

 cent protein, 4 per cent fat, and 8 per cent fiber. The ash content 

 is about 4 per cent, in the case of feed to which the solids in the 

 steep-water have been added; and, otherwise, less than 1 per cent. 

 Gluten meal, on the other hand, contains about 35 per cent protein 

 and less than 10 per cent fat. Germ oil meal has a protein content 

 about 11 per cent and a fat content of 6 per cent. ' The digestibility 

 of all these feeds is nearly as high as that of Indian corn. 12 



QUESTIONS 



1. Describe the methods of manufacture by which brewers' grains, malt 



sprouts, and distillers' grains are obtained. 



2. What are the characteristic properties of these feeds ? 



3. Give the method of manufacture of starch- and glucose-factory feeds. 



4. State their value for feeding farm animals. 



"Wisconsin Circular 47, p. 72. a Wisconsin Report, 1896, p. 92. 



