Fractionation of Soybean Oil Meal for Growth and Antiperotic Factors: 1. Non-Phospholipid Nature of the Factors

Abstract

IN INVESTIGATIONS of the unidentified growth factors present in dried whey, the growth response varied with different lots of soybean oil meal which were used as a source of protein. This led Hill (1948) to conclude that soybean oil meals were themselves sources of growth factors and this was further supported by the studies of Hill and Briggs (1950), and Savage et al. (1950). Similar results have been obtained at this Experiment Station and have led the present workers to attempt the concentration of the growth factor(s) for turkey poults from soybean oil meal. EXPERIMENTAL PROCEDURES The basal diets (Table 1) contained about 27% protein and the other nutrients established to be needed for the turkey poults. Drackett C-l (an isolated soybean protein) supplied all the protein in basal diet D and one-half of the protein in diet DSB. The other half came from soybean oil meal (methanol extracted) which …