【摘要】 将 2 2 0只艾维茵肉仔鸡随机分为 4组 ,每组 5 5只 ,分别为限饲组 R1 ,R2 ,R3 和对照组 R0 。 4组鸡1～ 7日龄均为自由采食 ,从 8日龄起 R1 ,R2 和 R3组分别饲喂自由采食量约 5 0 %的饲粮 ,分别限饲 1,2 ,3d后恢复自由采食。结果表明 ,R1 组鸡 6周龄体重、平均日增重、料肉比、胴体产量和腹脂量略低于 R0 组 (P>0 .0 5 ) ;R2 和R3 组 6周龄体重、平均日增重、腹脂量及腹脂率均显著低于 R0 组 (P<0 .0 5 ) ,料肉比、胴体产量略低于 R0 组(P>0 .0 5 ) ;早期限饲可降低一些代谢疾病的发生率及死亡率更多还原

【Abstract】 The experiment was conducted with broilers to determine the effect of early feed restriction and realimentation on growth rate,feed efficiency,carcass yield and abdominal fat pad at 6 weeks of age.220 Avian broiler chicks of 1 day of age were divided into 4 groups,each of 55,numbered as restriction groups R 1,R 2 and R 3,and control group R 0 respectively.From 1-7 days of age,each group was provided feed ad libitum ,then R 1,R 2 and R 3 was provided about 50% feed ad libitum for 1,2 and 3 d respectively,then realimented with ad libitum ,feed intake.The results showed that,compared with R 0 birds,average body weight,average daily gain,feed/gain,carcass yield and abdominal fat weight of R 1 birds at 6 wk age were slightly lower ( P >0.05);the average body weight,average daily gain and abdominal fat weight of R 2 and R 3 birds at 6 wk age were significantly lower ( P <0.05),the feed/gain and carcass yield were slightly lower.The results also demonstrated that early feed restriction could reduce incidence and mortality of some metabolic diseases in broilers.更多还原