Vanish Pig-feeding Experiments. 



587 



skim milk was decreased in the ratio of 1 pound of grain to 6 pounds 

 of skim milk on the average, the following results were obtained: 



Comparison of centrifugal sTdm milk with rye and barley — Copen- 

 hagen Station. 



In later work at that Station these feeds have always been 

 Bubstituted for one another in the proportion of 6 pounds of sep- 

 arator skim milk for 1 pound of grain. If all experiments in 

 this line are averaged, we find that the daily gain per head was 

 practically identical, whether much or little grain was replaced by 

 skim milk, in the ratio of 1 to 6, showing that the comparative 

 feeding value of these feeds is expressed by this ratio. (869) 



889. Grain compared with whey. — Two series of experiments' 

 with sixty animals in all were conducted, in which one pound of 

 grain was fed as an equivalent to twelve pounds of whey from 

 separator skim-milk cheese. In these trials the average weight 

 of the pigs fed was about 50 pounds, the experiments lasting 115 

 days each, with results shown below: 



Feeding whey and grain to pigs — Copenhagen Station. 



Dally Increase ■ 

 Feed per pig daily. per head. 



1.3 lbs. grain, 27.1 lbs. whey, 1 lb. buttermilk 945 lbs. 



1.95 lbs. grain, 19.3 lbs. whey, 1 lb. buttermilk 950 lbs. 



2.6 lbs. grain, 11.5 lbs. whey, 1 lb. buttermilk 955 lbs. 



The results show that one pound of rye or barley is equal to 

 twelve pounds of whey from centrifugal skim-milk cheese. We 

 have already shown that one pound of rye or barley is equivalent 



» Kept. 1887, p. 38. 



