The Value of Corn Fermentation Solubles in Poultry Nutrition , ,

INTRODUCTION THE NEED for unidentified growth factors (UGF hereafter) by chicks is indicated by numerous reports. However, certain conditions modify the chick's response to these factors. Menge et al. (1952) and Johnson (1953) found that chicks from depleted hens respond to the factor(s) supplied by brewers dried yeast or fish solubles whereas progeny from non-depleted hens do not. Extraction of soybean protein with isopropanol increases the response of chicks to fish solubles but not to corn, distillers dried solubles (Reid et al., 1958). Crude sources of UGF contain both organic and inorganic substances (Morrison et al., 1955). Certain trace minerals are partially responsible for their growth-promoting effect. For example, O’Dell and Savage (1957) reported that zinc can replace part of the minerals supplied by distillers dried solubles. Reid et al. (1956) and Kurnick et al. (1957) found that molybdenum stimulated chick growth to the same extent as the intact dried …