【摘要】 研究了赖氨酸和蛋氨酸对商品肉鸡的饲养效益,结果表明:前期(0—4周龄)饲粮含代谢能3,100千卡和粗蛋白质19%,补添赖氨酸0.20%和蛋氨酸0.15%;后期(5—7周龄)饲粮合代谢能3,200千卡和粗蛋白质17%,补添赖氨酸0.15%和蛋氨酸0.12%,商品肉鸡七周龄体重可达1,816±241克,料肉比2.12:1,较之按标准饲粮饲喂的对照组鸡增重提高11.11%(P<0.01),饲料消耗减少11.30%,增重饲料成本则降低2.5%。饲粮代谢能和粗蛋白质无论含量过高或过低,补添赖氨酸和蛋氨酸均未显示明显效益。此外,补添赖氨酸和蛋氨酸对提高胴体可食肉比例可能有一定作用,但对肉组分无明显影响。更多还原

【Abstract】 To study the effect of lysine and methionine on broiler, 4 treatments were designed in the experiment. The results show that the broiler gain can be improved when a diet contains 3100K. cal/Kg metabolizable energy(ME) and 19% crude protein(CP)with0.20% (diet basis) lysine, and 0.15% methionine added in earlier stage(0—4 week), and contains 3200K. cal/Kg ME and 17% CP with 0.15% lysine and 0.12% methionine added in latter stage (5—7 week). The 7—week broiler weight was 1816±241g and feed-meat ratio was 2.12:1. Compared with the standard ration (control treatment). the broiler gain of the treatment was increased by 11.11% (p<0.01), feed consumption was reduced by 11.30%, gain feed cost was decreased by 2.5%. However, whether the dietary ME and CP level were high or low, there were not any benefit with the lysine and methionine added.更多还原