THE SWINE INDUSTRY 185 



in swine feeding. In using meat meal and tankage 

 as supplemental feeds the following conclusions 

 were reached: that meat meal and tankage of 

 similar chemical composition are almost equal, 

 pound for pound, as a supplement to a corn ration 

 for growing pigs and fattening hogs. That grow- 

 ing pigs fed meat meal and tankage to the extent of 

 16% per cent of their ration, and older hogs hav- 

 ing these feeds to the extent of 10 per cent of their 

 ration with corn, ate more feed and made more rapid 

 gains than those fed on any other combination, 

 such as shorts, barley and corn, or shorts and corn 

 tested in these experiments. In dry lot feeding, a 

 ration composed of corn with either meat meal or 

 tankage, produced from 25 to 40 per cent faster 

 gains on quite mature hogs and from 50 to 60 

 per cent faster gains on younger hogs than a ration 

 of corn alone. In every instance, the number of 

 pounds of feed required per hundred pounds gain 

 was decidedly less with the mixed ration. 



Under certain special conditions it is possible to 

 raise and fatten hogs without the use of grain. 

 Farmers situated in immediate proximity to cream- 

 eries having large quantities of skim milk and 

 buttermilk which can be purchased cheaply, and 

 farmers living near cities where the refuse from 

 hotel kitchens can be obtained, have frequently 

 secured large profits from hogs raised and fattened 

 on these materials. It is also possible to main- 

 tain breeding animals in a medium state of thrift 

 on pasture without the use of any grain, but this 

 is never an advisable practice where even a small 

 grain ration can poss,ibly be supplied. Experi- 

 ments have shown conclusively that hogs on even 

 the best pasture grow faster and make vastly more 

 economical gains if a ration of grain be furnished. 



