饲粮代谢能水平对22～42日龄黄羽肉鸡体成分和能量、粗蛋白质沉积率影响的研究

试验以岭南黄鸡为代表 ,研究饲粮代谢能水平对 2 2～ 4 2日龄黄羽肉鸡体成分和能量、粗蛋白质沉积率的影响。试验结果表明 ,随饲粮代谢能水平提高 :①试鸡空体粗脂肪和能量含量呈线性增加 (P <0 .0 5或P <0 .0 1) ,而空体粗蛋白质含量无显著变化 (P >0 .0 5 ) ;②试鸡腿肌粗脂肪含量增加 (P <0 .0 1或P >0 .0 5 ) ,到处理 3组达到峰值 ,以后略有下降。胸肌粗脂肪含量变化不显著 (P >0 .0 5 ) ,也无规律 ;③饲粮代谢能水平对雌性试鸡能量沉积率有显著影响 (P <0 .0 5 ) ,粗蛋白质沉积率无显著变化 (P >0 .0 5 )。

Effect of Diet Metabolizable Energy on Empty Body Composition and Rates of Energy and Protein Deposition for 21 ～ 42 Days Yellow Broilers

One experiment was conducted to study the effect of diet metabolizable energy (ME) on the empty body composition and the rates of energy and protein deposition for 21～42 days LINGNAN yellow broilers. The results indicated that with the increasing of diet ME: ①The crude fat and energy content in empty body was linearly increased (P<0.05 or P<0.01), but no significant effect on the content of crude protein in empty body (P>0.05); ② The crude fat content in leg meat was increased (P<0.01 or P>0.05), the result of treatment 3 was the peak value, and then decreased slightly, but the content of crude fat in chest meat was not significant (P>0.05); ③ Diet ME affected significantly the rate of energy deposition in female broilers (P<0.05), Diet ME had no effect on the rate of crude protein deposition.