能量和蛋白水平对崇仁麻鸡生产性能的影响

崇仁麻鸡360只(公母各半)随机分成三组,分别饲喂高、中、低三种能量和蛋白质水平的日粮;高ME 13.39MJ/kg(前期CP 22%,中期CP 19%,后期CP 18%)、中ME 12.55MJ/Kg(前期CP 20%,中期CP 18%,后期CP 17%)、低ME 12.13J/Kg(前期CP 18%,中期CP 17%,后期CP16%).结果表明不同营养水平对10,20,30,40,50,60日龄的崇仁麻鸡体重有显著的影响;对1～10,21～30,31～40,41～50,61～70日龄间的日增重影响差异显著;以中等营养水平组的饲料报酬最优.营养水平对20日龄的脂肪含量和30,40,50,60,70,75日龄的水分、脂肪含量有显著的影响.

Effects of Different Dietary Nutritious Levels on Performance and Carcass Composition of Chongren Chicken

An experiment was conducted to detect the effects of different nutritious levels on production performance and carcass composition of Congren chicken.360 chickens were divided into three groups randomly .group H(ME 13.39MJ/ kg with CP 22%, 19% and 18% at prophase.metaphase and anaphase),group ME 12.25%MGAg with CP 20%, 18% and 17% at prophase.metaphase and anaphase),and group L (ME 12.25MJ/kg with 18%, 16% and 15% at prophase, metaphase.metaphase and anaphase), respectively .The results showed that; different nutritious levels had significant differences(P<0.05 or P<0.01)of body weight at 10,20,30,40,50,60 days,average daily gain(ADG) between 1-10,21-30, 31-40,41-50,51-60,61-70 days,and the feed to gain ratio of group M is the lowest one.lt also showed significant differences (P<0.05 or P<0.01 )of body fat content from 20 to 75 days and body water content from 30 to 75 days.