1896.] 



PUBLIC DOCUMENT — No. 33. 



65 



(h) CHICAGO GLUTEN MEAL v. ATLAS MEAL. 

 Experiment avith Cows. 

 Object of the Experiment. 



The experiment was undertaken for the purpose of noting 

 the feeding value of the new by-})roduct Atlas meal, as com- 

 pared with Chicago gluten meal. 



Atlas Meal. — This is a comparatively new article in 

 Massachusetts markets. It consists of the hull, gluten and 

 germ of different grains left behind in the process of alcohol 

 manufacture. It comes into the market ground fairly fine, 

 and contains about the same amount of protein as does the 

 Chicago meal. The amount of cellulose and fat is, however, 

 in excess of the latter. The composition of the two grains 

 follows : — 



CONSTITUEXTS. 



Water (per cent.), 

 Crude ash (per cent.), . 

 " cellulose (per cent.), 

 " fat (per cent.), . 

 " protein (per cent), . 

 Extract matter (per cent.), . 



10.00 

 .37 

 10.75 

 13.75 

 33.57 

 31.56 



Plan of the Experiment. 



The experiment was in operation during January and a part 

 of February, 1895. The cows, four in number, were grades. 

 The feeds consisted of hay, corn and soja-bean ensilage, 

 bran, Chicago gluten meal and Atlas meal. The ensilage, 

 hay and bran remained constant during the entire experi- 

 ment. The preliminary feeding periods lasted seven days, 

 the two periods proper ten days each. To overcome the 

 natural milk shrinkage the following arrangement was in- 

 stituted. The cows were divided into two lots. In Period 

 I., cows 3 and 6 were fed Chicago meal at the same time 



