Condensed Fish Solubles as a Supplement for Corn and Soybean Oil Meal Chick Rations ,

BERRY et al. (1943), have shown that feeds of animal origin, in addition to their protein value, are excellent sources of several vitamins. Mishler et al. (1946), showed that rapid growth could be obtained with a ration containing 55 percent of corn and 40 percent of soybean oil meal, when supplemented with four synthetic B complex vitamins, a simple mineral mixture, and vitamin A and D fish oil. This result suggested that soybean oil meal is a satisfactory source of protein for rapid growth in young chicks. However, soybean oil meals show some variation in supplementary value for choline and methionine. Marvel et al. (1944), have pointed out that when methionine or choline deficiencies do occur they may be offset by additions of either choline chloride or methionine. Berry et al. (1945), using fish press water (now called condensed fish solubles) found that an ethanol extract of this product, which . . .