Metabolizable Energy Value and Utilization of Different Types and Grades of Fat by the Chick

Abstract

IT HAS been shown by Sunde (1956) and others that the presence of fat in the diet of the chicken has a beneficial effect upon the efficiency of feed utilization. Waibel (1955) and others have shown that the presence of fat in the diet frequently has a beneficial influence on growth rate also. These effects of added fat in poultry feeds have led to the development of more highly efficient feeds and emphasized the need for more precise information regarding the energy content of fats and the utilization of various types and grades of fats when fed. The energy content of poultry feed ingredients has been studied by Hill and Anderson (1958) and Potter et al. (1958), and it was shown that metabolizable energy is a more valid measure of energy content of poultry feeds than is productive energy. Metabolizable energy values ranging from 2,860 to 3,300 Calories per …