195.

Vohra P, Heil JR. Growth-promoting properties of crude soybean phospholipids. Poultry Sci. 1969; 48(5):1661-1667. (CA72) Zn-deficient purified diets (~18-19 ppm Zn) contg. either 33% isolated soybean protein, or 25% casein + 8% gelatine as protein sources supplemented with 0.45% DL-methionine were used to compare the growth stimulating properties of the following substances, singly or in combination with each other, at the indicated dietary levels for turkey poults: 0.03% Na2 EDTA 2H2O, 2% crude soybean phospholipids, or 0.01% Zn. The poults grew much better on a Zn-deficient casein-gelatin diet than on a soybean protein diet. EDTA improved growth on both diets but soybean phospholipid was significantly growth promoting only on the casein-gelatin diet; this effect evidently was not due to variations in dietary Zn, Mn, Cu, or Fe contents. EDTA improved growth by improving the availability of dietary Zn from both diets.

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