早期数量限饲对肉用仔鸡生产性能、胴体品质的影响  

Effects of quantitative feed restriction on growth performance and carcass quality of broiler chickens in early period

作　　者：薛剑[1] 王立辛[1] 

机构地区：[1]辽宁医学院畜牧兽医学院

出　　处：《中国饲料》2010年第1期13-16,共4页China Feed

基　　金：辽宁省科技厅科研项目(2008301010)

摘　　要：试验研究了早期数量限饲对肉用仔鸡生产性能、胴体品质的影响。以320只1日龄AA+肉用仔鸡为试验动物。设4个处理组,每个处理组4个重复,每个重复20只肉仔鸡。对照组根据AA+商品代肉鸡营养标准配制。各处理肉用仔鸡1～7日龄均为自由采食,8～14日龄对照组、限饲90%组、限饲80%组和限饲70%组分别饲喂自由采食量的100%、90%、80%和70%,15日龄恢复自由采食,以后按常规饲养管理。每周末,以重复为单位全部称重。分别于42、49日龄,每个重复随机抽取4只肉用仔鸡禁食12h、称重、屠宰、测定屠体品质。试验结果表明:在第2周,限饲各组肉仔鸡的体重和日增重分别显著低于对照组(P<0.05);在第3周,限饲90%组完成补偿生长,体重与对照组差异不显著(P>0.05);在第4周,限饲80%和70%组完成补偿生长,体重与对照组差异不显著(P>0.05);5、6、7周及2～6、2～7周各组在体重、日增重、日采食量和饲料转化率等都无显著差异(P>0.05)。早期数量限饲对肉仔鸡胴体特性没有显著影响(P>0.05),限饲70%～80%,具有改善饲料转化效率、胸肌率、腹脂率的作用。The experiment was conducted to study the effect of early quantitative feed restriction on growth performance and carcass quality of broiler chickens.320 one-day-old commercial AA＋broiler chicks were assigned to four treatment groups randomly,including control group,90 % limitted forage group, 80 % limitted forage group and 70 % limitted forage group.Each treatment group composed of four replicates with 20 broilers per replicate.Basal diet was formulated according to the feeding standard of commercial AA＋hroiler chicks.Broiler chicks in every group fed ad libitum from 1 day old to 7 days old,and the broilers were restricted respectively tol00 % ,90 % ,80 % and 70 % of free intake from 8 days old to 14 days old for 7 days.At 15 days old broilers returned to ad libitum and then were raised by conventional process. Every weekend all broilers were weighed.At 42 and 49 days old ,4 broilers were taken randomly from every repetition groups fasted for 12 hours, then weighed, slaughtered and assayed for carcass quality.The result showed that feed restric- tion caused a reduction in body weight and average daily gain during the restriction period （P 〈 0.05）;The broilers re- stricted to 90 % of the ad libitum intake got growth compensation in the third week;The broilers restricted to 80 % and 70 % got growth compensation in the forth week.There were no significant difference between restriction groups and the control group in body weight,average daily gain ,average daily intake and feed conversion efficiency （P 〉 0.05 ）from 2 - 7 week.Early quantitative feed restriction had no significant effect on carcass characteristics of broiler chickens （P 〉 0.05）, but feed restriction of 70 % - 80 % of the ad libitum intake could improve feed conversion efficiency, the pectoral muscles ratio and the percentage of abdominal fat.

关 键 词：肉仔鸡 数量限饲 生产性能 胴体品质 

分 类 号：S816.7[农业科学—饲料科学]