FEED AND CARE OF SWINE 241 



This by-product, like rice polish, is hard to purchase at a reason- 

 able price, outside of certain localities. The experienced feeder 

 of rice by-products should have no difficulty in securing rice meal 

 instead of rice bran adulterated with hulls. 



Packing House By-Products. Digester tankage and dried blood 

 are fed to furnish protein to supplement corn in rations for hogs. 

 These by-products should be fed in limited quantities because 

 they are very concentrated. Tankage should not make up more 

 than 10 per cent, of a ration and dried blood in quantities 

 of a tablespoonful is sufficient. These concentrates should be 

 thoroughly mixed with the grain portion of the ration so that 

 each pig will not secure any more than its share. For young 

 pigs these amounts should be reduced. The use of these feeds 

 seems to shorten the fattening period and keep up the appetite. 

 It must be understood that the value of these by-products de- 

 pends upon their composition and quality which is sometimes 

 variable. 



Dairy By-Products. Skim milk, buttermilk and whey are the 

 dairy by-products fed to swine. 



1. Skim milk may be fed to swine of all ages. Experiments 

 show that 3 Ibs. of skim milk to I Ib. of meal give the best 

 returns. Skim milk develops strong bones and produces good 

 body tissue. 



2. Buttermilk, when not diluted, has about equal value to skim 

 milk. It is perhaps not so valuable as skim milk for feeding 

 young pigs. Skim milk and buttermilk are rich in protein and 

 ash, and as corn meal is rather deficient in these constituents, they 

 are complementary fe^rK 



3. Whey. The value of this by-product for feeding depends 

 upon its source. Experiments gave best results when whey was 

 fed with ground corn, barley, rye, or wheat. Whey is a bulky 

 food and can be utilized to better advantage by old than young 

 animals. According to Henry in averages of results of the Wis- 

 consin and Ontario Experiment Stations, 785 Ibs. of whey will 

 equal 100 Ibs. of grain. 



Molasses. The results of experiments in feeding hogs with 

 beet molasses have not been favorable for using this by-product 



