Further Studies on Vitamin G in Chick Nutrition

Abstract

THE recent nutritional literature contains a number of reports (Elvehjem and Koehn, 1935; Lepkovsky and Jukes, 1935; Lepkovsky, Jukes, and Krause, 1936; Ansbacher, Supplee, and Bender, 1936) which show that vitamin G, as originally postulated, contains more than one factor which is required by the chick. Hauge and Carrick (1926) were the first to present evidence that the chick required a thermostable factor present in yeast in addition to vitamin B1. These observations were confirmed by Norris and co-workers (1930, 1933) and Bethke et al. (1931) who also reported the occurrence of a leg disorder in a variable percentage of the chicks fed a ration low in vitamin G. The addition of autoclaved yeast, liver, alfalfa leaf meal, and certain milk products to these rations increased growth and prevented the leg disorder. Ringrose and associates (1931) reported the occurrence of a pellagra-like syndrome in chicks fed a corn, wheat middlings, . . .