MAXIMIZING AMINO ACIDS AND METABOLIZABLE ENERGY UTILIZATION IN BROILER DIETS

Abstract

Three experiments were carried out at the poultry production unit, Faculty of Agriculture, Ain Shams University, Shalakan, Qalyubia, Egypt, aimed to investigate the effect of Guanidino acetic acid (GAA) and or xylanase enzyme (xyl.) to maximum protein and metabolizable energy utilization in low protein and/or energy diets for broiler chicks. One thousand and eighty, one day old of male Hubard broiler chicks, randomly distributed over 18 treatments within three experiments. Each treatment comprised of 60 chicks divided into 6 replicates of 10 chicks each. The control group was considered twice within three different experiments. Parameters measured were performance, carcass characteristics and some plasma constituents.