Fat Studies in Poultry: 7. Fat and Nitrogen Retention in Chicks Fed Diets Containing Different Levels of Fat and Protein

Abstract

ABSTRACT BIELY and March (1954) reported that the effect of fat supplements in chick diets depends in part upon the protein content of the diets. The addition of fat to low protein diets depresses growth and feed efficiency, whereas the addition of fat to high protein diets stimulates growth and improves efficiency of feed utilization. Among other reports regarding the protein-energy relationship are those of Hill and Dansky (1954); Sunde (1956); and Donaldson, Combs and Romoser (1956). The above studies dealt with protein: energy relationship in terms of total feed utilization. There has, however, been little work done on the effects of varying dietary levels of protein and fat on the utilization of these specific nutrients by the chick. In the rat, Forbes et al. (1946), found that gain in live weight, the digestibility of nitrogen and the retention of nitrogen and energy were increased by raising the fat content of . . .