FEEDS FOR SWINE 659 



the best of several combinations tested. In these trials and also in an 

 experiment by Hislop at the Washington Station 97 it was found desirable 

 to add a small amount of a feed of animal origin, like tankage or skim 

 milk, to a ration of grain and peas, for pigs not on pasture. Sometimes 

 pigs fed peas alone in dry lot do not thrive, but in other instances they 

 make quite good gains. Such a ration is, however, usually uneconomical 

 and much better results are secured when the peas are fed with grain, 

 the peas forming only half the ration or less. 



976. Cull beans. Cull table beans are satisfactory for swine when 

 thoroly cooked and fed with carbonaceous feeds. At the Michigan Sta- 

 tion 98 in 3 trials Shaw and Anderson found that pigs fed equal parts 

 of cooked cull beans and corn meal made average gains of 1.5 Ibs. per 

 head daily, requiring 406 Ibs. of feed for 100 Ibs. of gain. Pigs fed beans 

 alone gained only 1.1 Ibs. and required 421 Ibs. of beans for 100 Ibs. gain. 

 Salt should always be added to the water in which the beans are cooked. 

 When beans are fed alone or in excess they produce a soft pork lacking 

 in quality. (263) 



977. Soybeans; soybean oil meal. Not only do soybeans contain nearly 

 as much crude protein as linseed meal but the protein is well-balanced 

 in composition so that it supplements the proteins of the cereal grains 

 quite efficiently. Doubtless because of this, trials have shown soybeans 

 to have a higher value than most protein-rich feeds of plant origin. 

 Soybeans are, however, low in calcium. Also, their high fat content 

 sometimes makes them rather unpalatable to swine receiving them con- 

 tinuously. The following table summarizes the results of 12 trials with 

 a total of 151 pigs in which ground soybeans were compared with tankage 

 as the only supplement to corn for dry lot feeding. In these trials pigs 

 averaging 117 Ibs. in weight were hand-fed for an average of 70 days : 



Soybeans vs. tankage as a supplement to corn 



Daily Feed for 100 Ibs. gain 



Average ration gain Corn Supplement 



Lbs. Lbs. Lbs. 



Lot /,* Soybeans, 1.00 Ib. Corn, 4.8 Ibs 1 . 43 336 71 



Lot II * Tankage, 0.73 Ib. Corn, 5.4 Ibs 1 . 58 340 46 



*Average of 3 trials by Carmichael (Ohio Bui. 209) ; 3 by Good (Ky. Bui. 175 and Cir. 20) ; 2 by Robison 

 (Ohio Buls. 316, 349); 2 by Skinner and Cochel (Ind. Buls. 108, 137); and 1 each by Erf (Kan. Bui. 192) 

 and Forbes (Ohio Bui. 213). 



On the average the pigs fed soybeans and corn made nearly as large 

 gains as those fed tankage and corn, and required only 336 Ibs. corn and 

 71 Ibs. soybeans for 100 Ibs. gain. In these trials 100 Ibs. ground soy- 

 beans replaced 65 Ibs. tankage plus 5 Ibs. corn, not considering the fact 

 that the gains were a trifle less rapid on the soybeans. With tankage at 

 $60 a ton arid corn at 56 cts. a bushel, this would give soybeans a value 

 of about $40 a ton. A similar high value for soybeans in comparison 

 with tankage was secured in 2 trials by Robison" when they were fed as 

 the supplement to corn on pasture. 



"Wash. Bui. 153, p. 8. "Mich. Bui. 243. "Ohio Bui. 349. 



