摘要
本试验研究肉仔鸡生长早期 (2～ 3周龄 )不同代谢能、蛋白质限饲水平对生产性能和胴体品质影响。结果表明 :(1 )早期低代谢能和低蛋白的限饲处理均可明显降低肉仔鸡生长速度 (P <0 .0 5) ,并在恢复阶段表现出完全补偿生长。 (2 )早期不同代谢能、蛋白限饲水平对饲料转化率没有影响 (P >0 .0 5)。 (3)早期不同代谢能、蛋白限饲水平均有提高胴体产量、胸肉和腿肉比例的趋势 (P >0 .0 5)。 (4)早期低代谢能限饲明显降低 42日龄腹脂重 (P <0 .0 5) ,低蛋白质限饲增加腹脂重 (P >0 .0 5)。
An experiment was conducted to examine the effects of dietary energy and protein levels during early growth period on performance and carcass of broilers. The results showed that body weight was decreased by low ME diet and low protein diet during the restriction time (P<0.05) . Complete compensatory growth was observed in the following realimentation period. Feed conversion efficiency was not improved by different energy and protein restriction levels during early growth period (P>0.05). The meat weight of leg and breast tended to increase due to feed restrictions (P>0.05). In low ME groups, the weight of abdominal fat was decreased(P<0.05), but the weight of abdominal fat was increased in low protein groups (P>0.05).
出处
《中国畜牧杂志》
CAS
北大核心
2003年第3期5-7,共3页
Chinese Journal of Animal Science
基金
高校博士点基金资助项目
关键词
生长期
能量
蛋白质
限饲水平
内仔鸡
生产性能
Animal Science
Compensatory growth
Feed restriction
Broiler
Performance
