Effect of reducing dietary energy and protein on growth performance and carcass traits of broilers

摘要

Dietary energy in excess of maintenance and production requirements of broilers will lead to increased fat deposition and reduced carcass quality. Low protein diets balanced with supplemental amino acids (AAs) can reduce the need for dietary energy required to break down dietary intact protein and for excretion of the excesses of AAs. Additionally, feeding low protein diets will lead to increased nitrogen utilization while reducing nitrogen excretion. Two experiments were conducted to evaluate the effects of reducing dietary metabolizable energy (ME) and crude protein (CP) at constant levels of standardized ileal digestible (SID) AA contents on growth performance and carcass traits of broiler chickens.