Abstract
THE practice of brewers to add activated carbon to the wort during processing has resulted in some brewers yeast products containing carbon. Although the carbon is completely deactivated, the question may be raised as to the resulting effect of this inclusion on the growth of chickens and turkeys when the product is utilized in poultry rations. This question is legitimate when one considers that carbon has been suspected as possibly exerting a depressing action on growth. Almquist, Jukes and Newlon (1938), and Almquist and Zander (1940), in a series of studies utilizing two percent of an adsorbing carbon in chick rations, reported in some cases slight beneficial effects on growth and in some cases a slight depression on growth. They concluded that practical rations supplemented with carbon may exhibit detrimental effects causing vitamin A, G and K deficiencies if the feed does not contain more than adequate levels of these …
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