The Growth Response of Turkey Poults to a Water-Extract of Soybean Oil Meal as Influenced by Different Sources of Isolated Soybean Protein

A WATER-EXTRACT (WE) of dehulled soybean oil meal has been shown to have growth promoting properties when added to a diet using isolated soybean protein (C-l)a as the protein source (Wilcox el al., 1961). Several soybean proteins are available commercially and two of these—Promine R protein (PR)b and Number 65 protein (65)c—were compared with C-1 in respect to poult growth both with and without supplementation with WE. The WE and the water-extracted soybean oil meal (WESBOM) were prepared as outlined in the above paper. The compositions of the diets are shown in Table 1. Day-old Broad Breasted Bronze poults were wingbanded and randomly distributed into pens in electrically heated battery brooders where they had free access to diet and water. The lengths of the experiments were limited by the amounts of WE that were available. At the conclusion of the experiments, the poults were weighed, sacrificed and sexed…