Radionuclide Mineral Studies , : 3. The Effect of Breed and Dietary Zinc, Calcium, and Vitamin D3 on the Retention of Zinc65 in Chicks

Abstract

INTRODUCTIONTHE indispensability of zinc in the ration of chicks was first shown by O’Dell and Savage (1957a, b). They presented data showing that the addition of supplements of zinc and potassium to the ration formulated by Dannenburg et al. (1955) produced growth responses similar to that obtained from ash of distillers’ dried solubles. Their data indicated that most of the growth promoting value obtained from ash of some natural feedstuffs was due to zinc and not to an unidentified nutrient as suggested by Dannenburg et al. (1955), Morrison et al. (1955, 1956), Camp et al. (1956), Menge et al. (1956).O’Dell et al. (1958) described the zinc deficiency syndrome as slow growth, shortening and thickening of the long bones, keratosis, development of frizzled feathers, an abnormal respiration and an unsteady gait. Morrison and Sarett (1958) also reported that a zinc deficiency in chicks resulted in enlarged hocks as well…