Further Studies on the Apparent Effect of Digestibility upon Growth, Weight-Maintenance and Egg Production

Abstract

IN STUDYING the vitamin factors other than riboflavin present in dried milk by-products it was found that fibrous feeds such as wheat bran and ground oats tended to hold back the growth of chicks and thereby mask the growth-promoting effect of the unidentified factors contained in dried whey. In this study a chick ration known to be complete in all known nutrients and containing 20 percent of wheat flour middlings, 10 percent of wheat bran and 10 percent of pulverized oats was used as the basal diet, in which replacement of the bran and oats was made by adding corn meal and making any protein adjustment by means of casein. In one series, the average weights were increased over the basal lot by 40, 44 and 92 grams when the pulverized oats, wheat flour middlings, and wheat bran were omitted respectively. The grams of feed required to produce a gram . . .