育成期红腹锦鸡适宜蛋白质水平的研究

试验选取健康、体重一致、12周龄的红腹锦鸡15只，随机分为5个处理，每个处理设3个重复，每个重复1只，试验期为12周，分别饲喂蛋白质水平不周的5种试验日粮（A组16．78％，B组17．76％，C组18．75％，D组19．75％，E组20．67％）。在试验期间，采用全收粪法收集所有样品，并测定样品。研究日粮蛋白质水平对育成期红腹锦鸡生长性能、营养物质消化率的影响。结果表明：日粮代谢能在同一水平上（12．14MJ／kg），蛋白质水平为18．75％时，平均日增重为3．13g，平均日采食量为21．51g，料重比为6．87。日增重和料重比均与其他各组差异显著（P〈0．05）。平均目采食量在各组之间差异不显著（P〉0．05）。蛋白质水平为18．75％时的蛋白质消化率明显高于其他各组（P〈0．05）。目粮代谢能为12．14MJ／kg，蛋白质水平为18．75％时，为红腹锦鸡育成期适宜粗蛋白质需要量。

Protein Requirement of Chrysolophus Pictus in the Finishing Stage

Fifteen healthy 12-week-old Chrysolophus pictus were randomly divided into 5 groups,and 5 diets with different level of protein were prepared(Group A 16.78%,Group B 17.76%,Group C 18.75%,Group D 19.75%, Group E 20.67%).Total feces collection method was used for collecting samples,and growth performance and digestibility of nutrients were determined.The results showed that the average daily gain(ADG) was 3.13 g/d,the average daily feed intake(ADFI) was 21.51 g/d,and the feed/gain(F/G) was 6.87 when the diets contained the same digestible energy(DE) but 18.75% protein,significant differences were noted between ADG and F/G in group C and other groups(P<0.05).There were no significant differences of ADFI between these groups(P>0.05).Protein digestibility in diet with 18.75% CP was higher than that in other groups(P<0.05).So 18.75% CP in diet with 12.14 MJ/kg ME was the optimum CP requirement for Chrysolophus pictus in finishing stage.