石岐黄肉鸡前期日粮适宜的能量和蛋白质水平的研究

Study on the Optimal Levels of Dietary Energy and Protein of Shiqi Yellow BroierDuring the Early Growth Peroid

本试验旨在研究优质石岐黄肉鸡前期日粮适宜的能量（ＭＥ）和蛋白质（ＣＰ）水平。试验共设４（ＭＥ）×５（ＣＰ）共２０个处理，各５个重复，每重复１６只母雏。ＭＥ（ＭＪ／ｋｇ）水平分别为１１．３，１１．９，１２．６，１３．２，ＣＰ（％）分别为１６．０，１７．５，１９．０，２０．５，２２．０。结果表明，以增重为衡量指标，石岐黄肉鸡生长前期日粮适宜的ＭＥ和ＣＰ水平分别为１２．６ＭＪ／ｋｇ和１９．０％；以能量存留率、氮存留率和饲料转化率为衡量指标，则适宜水平分别为１３．２ＭＪ／ｋｇ和２０．５％。

he results showed that the young Shiqi broilers′ optimal ME and CP levels should be 12.6MJ/kg and 19% based on weight gain, and 13.2 MJ/kg and 20.5% based on energy retention,nitrogen retention and feed conversion rate.