SIXTH ANNUAL YEAR BOOK — PART IV. 283 



milk made average daily gains of .93 pound and 1.57 pounds, consum- 

 ing 740 and 520 pounds of feed for 100 pounds of gain. The money cost 

 of the gain per 100 pounds was $4.48 and $3.97 respectively, a differ- 

 ence of 51 cents per 100 pounds in favor of the skim milk ration. 

 Please note that the results of these experiments do not show that 

 corn should not be fed to pigs, but that it should not be fed alone. 

 They show how it -may be fed profitably. 



The effect of the addition of dairy by-products to the ration is 

 especially marked when corn is the only grain fed, but they are also 

 highly valuable in a mixed grain ration. The Utah Experiment Station 

 has conducted a long series of experiments with skim milk in various 

 combinations with barley, wheat, corn, and bran. Some whey was fed 

 in three tests but never in as equal an amount as the skim milk. When 

 grain alone was fed the average of five tests, with a total of fifteen 

 pigs, show an average daily gain of .91 pounds, the amount of dry sub- 

 stance in the feed being 421 pounds for 100 pounds of gain. Wheal 

 grain and milk were fed, the average of eight tests show average daily 

 gains of 1.27 pounds and dry matter eaten at the rate of 334 pounds 

 per 100 pounds of gain. Four tests were made in this series with milki 

 alone. Not only were the gains small, but the feeding value of skim 

 milk was found to be much less when fed alone than when fe<l with 

 grain. The results at other Stations tend to confirm the ones quoted. 



The average of the Danish feeding experiments with pigs show that 

 when fed with grain 600 pounds of skim milk have a feeding value 

 about equal to that of 100 pounds of grain. Prof. Henry has shown 

 that the average of results at the Wisconsin Experiment Station shows 

 475 pounds of milk to be equal in feeding value to 100 pounds of meal. 

 The value found in the Utah investigations was 431 pounds in one series 

 of experiments, and 380 pounds in the other. Canadian investigators 

 give milk a value of 500 to 600 pounds for 100 pounds of mixed grain. 



The best results are obtained when the proportion of skim milk to 

 grain is comparatively small. Large quantities of milk will give the 

 best returns when the pigs are young, and as they grow older it should 

 be decreased. The Massachusetts Station recommends the following 

 rations when an abundance of milk is at the command of the feeder: 



RATIONS FOR GROWING PIGS. 



Weight of pigs Rations. 



20 to 60 pounds 8 ounces of corn meal to each quart of milk. 



60 to 100 pounds 6 ounces of corn meal to each quart of milk. 



100 to 180 pounds 3 ounces of corn meal to each quart of milk. 



