补饲对藏羊生长和屠宰性能影响的Meta分析  

Meta-analysis of effects of supplemental feeding on the growth and slaughter performance of Tibetan sheep

作　　者：庄万兰 高一丹 王旭 郭新羽 冉涛 ZHUANG Wanlan;GAO Yidan;WANG Xu;GUO Xinyu;RAN Tao(College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,Gansu,China)

机构地区：[1]兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业科学》2025年第2期467-481,共15页Pratacultural Science

基　　金：“十四五”国家重点研发计划(2021YFD1300504);兰州大学“双一流”建设人才引进项目(508000-561120213)。

摘　　要：为综合评价补饲对藏羊(Ovis aries)生长性能和屠宰性能的影响,本研究检索了PubMed、Web of Science、ScienceDirect、中国知网、万方数据和中文科技期刊数据库等中英文数据库从建库至2023年4月期间发表的藏羊补饲随机对照试验,利用Meta分析方法对符合条件的文献进行综合分析。最终从1689篇文献中筛选出28篇纳入Meta分析,结果显示:补饲组藏羊的平均日增重、净增重、屠宰率、胴体重和胴体脂肪含量值均极显著高于未补饲组(P<0.01),眼肌面积显著高于未补饲组(P<0.05)。亚组分析结果表明,精料补饲提高藏羊平均日增重的效果最佳,且提升平均日增重的效果随精料补饲水平及补饲周期的增加而升高,随藏羊年龄的增长而降低,6月龄以下藏羊的补饲效果最突出。逐一剔除法敏感性分析结果显示,补饲提高藏羊生长性能和屠宰性能的结果均较稳健。发表偏倚分析结果显示,除平均日增重、净增重、胴体重指标存在发表偏倚(P<0.05)外,其余指标均无发表偏倚。本文利用Meta分析,证实补饲可以改善藏羊生长性能和屠宰性能,可为藏羊精准饲养管理提供理论基础和数据支持。To evaluate the effects of supplemental feeding on the growth and slaughter performance of Tibetan sheep(Ovis aries),literature was searched on randomized controlled trials of supplementary feeding in Tibetan sheep published in Chinese and English databases,including PubMed,Web of Science,ScienceDirect,China National Knowledge Infrastructure(CNKI),Wanfang Data,and China Science and Technology Journal Database,from the time the database was created until April 2023.Following that,a Meta-analysis was conducted to merge and analyze relevant research literature.Finally,28 articles were screened for Meta-analysis out of the 1689 articles.The results showed that the average daily gain(ADG),net weight gain,dressing percentage,carcass weight,weight-adjusted fatness value(GR)(P<0.001),and eye muscle area(P<0.05)of the Tibetan sheep in the supplemental feeding group were significantly higher than those in the no supplemental feeding group.Subgroup analysis showed the best effect of concentrate supplementation on ADG of the sheep,which increased with increasing concentrate supplementation level and supplemental feeding days.In contrast,the ADG decreased with increasing age of the sheep,with the most prominent effect observed for sheep under 6 months.Sensitivity analysis using a one-by-one elimination method showed that the results of improved growth and slaughter performance of Tibetan sheep with supplementary feeding were stable.Publication bias analysis showed no publication bias(P<0.05)for most of the indicators,except ADG,net gain,and carcass weight.In the present study,using Meta-analysis,it was confirmed that supplemental feeding can improve the growth and slaughter performance of Tibetan sheep,which can provide a theoretical basis and data support for the accurate nutrition management of Tibetan sheep.

关 键 词：补饲 藏羊 META分析 文献检索 亚组分析 敏感性分析 发表偏倚分析 

分 类 号：S826.5[农业科学—畜牧学]