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β-羟基-β-甲基丁酸对肉仔鸡生长性能和屠宰性能的影响
引用本文:张海军,王成,武书庚,岳洪源,齐广海. β-羟基-β-甲基丁酸对肉仔鸡生长性能和屠宰性能的影响[J]. 中国饲料, 2009, 0(2)
作者姓名:张海军  王成  武书庚  岳洪源  齐广海
作者单位:中国农业科学院饲料研究所,北京市海演区中关村南大街12号,100081
摘    要:选择240只7日龄肉仔鸡按照体重相近原则随机分为5组,每组6个重复,每个重复8只,分别饲喂添加0%、0.01%、0.055%、0.1%、0.145% β-羟基-β-甲基丁酸(HMB)的试验日粮.采用三层笼养,试验期35 d.试验结果表明:(1)不同水平HMB对肉仔鸡生产性能的总体影响不显著.7~21日龄时,与对照组相比,0.145% HMB组内仔鸡料重比降低6.06%(P>0.05);0.1%和O.145%HMB肥组肉仔鸡死亡率低于对照组水平.22~42日龄时,0.145%HMB组肉仔鸡采食量与对照组相比降低9.94%,各处理组体增重和料重比差异不显著(P>0.05);7~42日龄时.0.145%HMB组肉仔鸡采食量与对照组相比降低9.03%(P<0.05),各处理问体增重和料重比无显著差异,但0.145%HMB组肉鸡料重比最小.0.1%和0.145%HMB组肉仔鸡死亡率低于对照组和其他处理组.(2)肉仔鸡的屠宰性能包括屠宰率、半净膛、全净膛率、胸肌率、腿肌率和腹脂率在各处理问无显著差异(P>0.05),0.145%HMB组肉仔鸡腿肌率较对照组提高3.74%(P=0.075).可见,在7~42日龄内仔鸡日粮中添加适量的HMB可显著降低肉仔鸡采食量.而体增重和饲料效率无显著变化,并有促进肉仔鸡腿部肌肉生长发育的趋势.

关 键 词:肉仔鸡  β-羟基-β-甲基丁酸  生长性能  屠宰性能

Effects of beta-hydroxy-beta-methyl butyrate on growth and slaughter performance in broiler chick
Zhang Haijun,Wang Cheng,Wu Shugeng. Effects of beta-hydroxy-beta-methyl butyrate on growth and slaughter performance in broiler chick[J]. China Feed, 2009, 0(2)
Authors:Zhang Haijun  Wang Cheng  Wu Shugeng
Affiliation:Zhang Haijun,Wang Cheng,Wu Shugeng
Abstract:Two hundred and forty 7-day-old broiler chicks were randomly allotted into 5 groups with different inclu-sion of beta-hydroxy-beta-methyl butyrate(HMB)(0 %,0.01 %,0.055 %,0.1 % or 0.145 %)for 5 weeks.Each group consisted of 6 replicates with 8 birds each.The results showed as follows:(1)The addition of HMB did not affect the gen-eral performance of chicks.During 7 to 21 d of ages,ratio of feed to gain in chicks fed 0.145 % HMB was decreased by 6.06 % compared to chicks fed control diet.Mortality rate in chi...
Keywords:broiler chicks  beta-hydroxy-beta-methyl butyrate  growth performance  slaughter performance  
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