FEEDS FOB SWINE 663 



corn. For example, in one trial pigs self-fed corn and tankage, free 

 choice, on timothy and bluegrass pasture gained 1.13 Ibs. a head daily 

 and consumed 357 Ibs. corn and 42 Ibs. tankage for 100 Ibs. gain. Another 

 lot fed a mixture of 3 parts corn germ meal and 1 part tankage instead of 

 tankage gained 1.22 Ibs. a head daily and required only 309 Ibs. corn 

 plus 19 Ibs. tankage and 58 Ibs. corn germ meal for 100 Ibs. gain. In 

 this trial 100 Ibs. of corn germ meal saved 40 Ibs. of tankage and 83 Ibs. 

 of corn. With corn at 56 cents a bushel and tankage at $60 a ton, this 

 gave corn germ meal a value of $40.60 a ton. However, in 3 other trials 

 by Evvard corn germ meal has had a lower value when added to corn and 

 tankage for pigs on good rape pasture. On the average, in these trials 

 the pigs fed corn with tankage as the only supplement gained 1.42 Ibs. a 

 head daily and required 350 Ibs. corn and 28 Ibs. tankage for 100 Ibs. 

 gain. Those fed corn germ meal in addition gained 1.44 Ibs. and required 

 329 Ibs. corn plus 19 Ibs. tankage and 29 Ibs. corn germ meal for 100 Ibs. 

 gain. In these trials 100 Ibs. corn germ meal saved 72 Ibs. corn and 31 Ibs. 

 tankage, making corn germ meal worth $33.00 a ton, with corn and tank- 

 age at the previous prices. 



In 5 trials 111 in which corn germ meal has been added to a ration of 

 corn and tankage for pigs in dry lot, the results differ widely. On the 

 average, the gain has not been increased over that made by pigs fed only 

 corn and tankage. In these trials 100 Ibs. of corn germ meal saved 52 Ibs. 

 corn and 44 Ibs. tankage. Evvard prefers a mixture of half or less of 

 corn germ meal and the balance of tankage to a mixture containing a 

 larger proportion of corn germ meal. 



981. Miscellaneous protein-rich feeds Velvet beans have not proved 

 to be a satisfactory feed for pigs, when the beans have formed any 

 considerable part of the ration. 112 This has been the case no matter 

 whether the beans have been fed shelled, ground, or in the pod, or 

 whether velvet bean feed has been used. This may be explained by the 

 fact that the proteins of the velvet bean are not well digested when 

 the beans are fed uncooked. 113 Also, it is possible that the beans contain 

 a substance which is somewhat poisonous to swine when fed in large 

 amounts. When only 20 per ct. of the ration consisted of velvet bean 

 feed, with the rest made up of corn, peanut meal, and alfalfa meal, 

 Lindsey secured satisfactory gains on pigs in a test at the Massachusetts 

 Station. 114 Good gains were also secured in a trial by the United States 

 Department of Agriculture when pigs were fed soaked velvet bean meal 

 with corn and fish meal 115 



111 Evvard, Live Stock Health Jour. Nov. 1, 1920; Robison, Ohio Mo. Bui. 57; 

 Skinner and Starr, Ind. Bui. 219. 



112 Dvorachek, Ark. Cir. 45; Good and Mann, Ky. Cir. 20; Griswold, Miss. Sta- 

 tion, information to the authors; Scott, Fla. Bui. 141; Templeton, Ala. Bui. 213. 



m Finks and Johns, Am. Jour. Physiol., 57, 1921, p. 61; Jones, Finks, and 

 Waterman, Jour. Biol. Chem., 52, 1922, p. 209. 



"*Mass. Bui. 197. 



m U. S. D. A. Rpt. Bur. Anim. Indus. 1918-19. 



