392 



SWINE IN AMERICA 



of value for growing pigs. Tests to determine the rela- 

 tive value of these by-products were conducted at the 

 j\Iichigan station (Bulletin No. 2T,y). in which it was 

 found that skim milk returned slightly larger gains, but 

 that the cost was relatively more than with tankage. 

 These results were obtained from skim milk at 20 cents 

 per 100 pounds and tankage at $1.62^ per hundred. 



One test was made through a period of 56 days in the 

 winter, in which the ration for Lot I consisted of corn 

 meal, three parts ; middlings, three parts ; and tankage 

 one part, mixed with water. For Lot IL equal parts of 

 corn meal and middlings, with an equal weight of skim 

 milk. The results were as shown : 



SKIM MILK vs. TANKAGE ; TESTS WITH PIGS BETWEEN 

 FOUR AND SIX MONTHS OLD 



The pigs in Lot I made a daily average gain of 1.09 

 pounds each with an average daily consumption of 3.5 

 pounds of feed per head, while those in Lot II increased 

 in weight daily 1.18 pounds each, consuming on an aver- 

 age 3.29 pounds of meal mixture and 3.5 pounds of skim 



