FEEDS FOR SWINE 649 



23 Ibs. tankage for 100 Ibs. gain. These excellent gains were secured on 

 the ration of only whey and barley in spite of the fact that it had a 

 nutritive ratio of 1 :7.4, thus furnishing considerably less protein than 

 is usually recommended for growing and fattening pigs. These results 

 are apparently due to the fact that while whey is low in protein, the 

 protein it does contain, which is chiefly milk albumin, is of excellent 

 quality to serve as a supplement to the proteins of the cereal grains. 



Other trials at the same station have shown that for younger pigs some 

 protein-rich feed, such as linseed meal or wheat middlings, should be 

 added to barley and whey to balance the ration more completely. With 

 corn and whey, a supplement should be fed even to pigs over 150 Ibs. in 

 weight, for corn contains considerably less protein than barley. An im- 

 portant fact brought out in these trials is that if pigs are given what 

 whey they will drink there is no further need, even for young pigs in dry 

 lot, of supplying protein-rich feeds of animal origin. Entirely satis- 

 factory results are secured when the ration is balanced by the cheaper 

 protein-rich concentrates of plant origin, like linseed meal and wheat 

 middlings. 



In these trials skimmed whey was worth about one-half as much per 100 

 Ibs. as skim milk. This means that 100 Ibs. of skimmed whey is worth 

 about one-fourth as much as a bushel of corn. Unskimmed whey from 

 American or cheddar cheese factories, which contains about 0.3 per ct. 

 fat, will be worth a trifle more, and unskimmed whey from Swiss factories, 

 which may contain 0.8 to 1.0 per ct. fat, will have a materially higher 

 value than skimmed whey. Whey should always be pasteurized at the 

 factory to prevent the spread of disease and should be fed under sanitary 

 conditions. Whey soured in clean containers 82 is as valuable as sweet 

 whey, but that from a putrid whey tank is a dangerous feed. 



964. Tankage or meat meal. The value of tankage or meat meal as a 

 supplement to corn or other carbonaceous concentrates has been demon- 

 strated in trials at many stations and by experience on many farms. Rich 

 in protein which is well-balanced in composition (118) and likewise 

 high in calcium and phosphorus, tankage is equalled only by skim milk, 

 buttermilk, and fish meal in producing thrifty growth and large gains. 

 Not only is tankage an excellent feed for pigs, but it also has the same 

 rank for feeding breeding stock. 



Tankage is one of the best single supplements for the grains, but for 

 all pigs not on pasture, and especially young pigs, decidedly better re- 

 sults are secured when certain other supplements are added to the ration. 

 It is pointed out elsewhere that less rapid and less economical gains are 

 generally made on grain and tankage alone than when there are added to 

 the ration one or more of the following feeds linseed meal, wheat mid- 

 dlings, corn germ meal, or alfalfa hay. (968) 



Since tankage or meat meal for stock feeding is thoroly cooked under 

 pressure at a high temperature, there is no danger of spreading disease 



"Day. Ontario Agr. Col. Rpt. 1897. 



