The Utilization of Wheat and Wheat By-Products in Feeding Young Chickens : IV. Ground Wheat as a Source of Vitamin G Growth Factor. Unknown Factors Which Affect Plumage Color and Structure

Abstract

IT HAS been demonstrated that grains should be supplemented with water-soluble growth-promoting factors associated with the vitamin B complex if good growth is to be obtained. There seems to be some confusion as to the identity of growth factors other than the commonly recognized vitamins B (B1, antineuritic), and vitamin G (B2, flavin).3Hauge and Carrick (1926) showed that corn was rich in the antineuritic factor but relatively poor in a growth-promoting factor. Normal growth in chicks was obtained by supplementing the corn with dried yeast. Since no symptoms of pellagra were reported when the percentage of corn was low, although slow growth was obtained in the absence of yeast, it was apparent that the growth-promoting factor was not identical with the pellagric factor, but rather with some other factor, probably the vitamin G growth factor. Differentiation between the antineuritic, antipellagric, and growth factors of the vitamin B complex has .