摘要
为探究中链脂肪酸对断奶仔猪生长性能的影响,本研究进行系统回顾和Meta分析,通过检索中国知网、维普、万方和PubMed数据库,查找中链脂肪酸对断奶仔猪生长性能影响的随机对照试验,检索年限从2000年1月至2022年5月,按照纳入和排除标准筛选文献和提取数据。共纳入10项研究,共计样本1322例,通过Review Manager 5.4软件进行Meta分析,使用随机效应模型计算平均日采食量、平均日增重和料重比的标准化均数差(SMD)和95%置信区间(CI),通过亚组分析和敏感性分析解释异质性来源,利用漏斗图评估发表偏倚。结果表明:中链脂肪酸组平均日采食量(P=0.51)和平均日增重(P=0.14)与对照组无显著差异,料重比显著低于对照组(P<0.01,SMD=-1.01,95%CI:-1.57--0.45)。亚组分析发现,饲喂时长超过30 d能够显著提高断奶仔猪平均日采食量(P=0.05,SMD=0.19,95%CI:0-0.38)、平均日增重(P<0.01,SMD=0.46,95%CI:0.24-0.68)和料重比(P<0.01,SMD=-1.34,95%CI=-0.41),饲喂量为1%-2%能够显著提高断奶仔猪平均日增重(P=0.05,SMD=0.48,95%CI:0-0.97)和料重比(P=0.04,SMD=-1.51,95%CI:-2.93--0.09)。综上所述,在饲粮中添加中链脂肪酸能够提高断奶仔猪生长性能,超过30 d的饲喂时长或1%-2%的添加量可以显著增加断奶仔猪平均日增重并降低料重比,对提高断奶仔猪生长性能的效果较好。
The aim of this systematic review and Meta-analysis was to explore the effects of medium chain fatty acids on growth performance of weaned piglets.We searched CNKI,CQVIP,Wanfang and PubMed(articles published from Jan 1st,2000 to May 1st,2022)and compared the effects of medium chain fatty acids on growth performance of weaned piglets.According to the selection criteria,10 studies(with data for 1322 pigs)were included in our Meta-analysis.A random-effects model was used to calculate the standardized mean differences(SMD)and 95%confidence interval(CI)for average daily feed intake,average daily gain and feed/gain by Review Manager V5.4.Heterogeneity was checked by sub-group analysis and sensitivity analysis,and publication bias was evaluated through funnel plots.Results showed as follows:the average daily feed intake(P=0.51)and average daily gain(P=0.14)of piglets in the medium chain fatty acid group were not significantly different from those of the control group,but the feed/gain was significantly lower than that of the control group(P<0.01,SMD=-1.01,95%CI:-1.57 to-0.45).Sub-group analysis showed that the medium chain fatty acid feed for more than 30 days could significantly increase the average daily feed intake(P=0.05,SMD=0.19,95%CI:0 to 0.38),average daily gain(P<0.01,SMD=0.46,95%CI:0.24 to 0.68)and feed/gain(P<0.01,SMD=-1.34,95%CI=-0.41)of weaned piglets.The average daily gain(P=0.05,SMD=0.48,95%CI:0 to 0.97)and feed/gain(P=0.04,SMD=-1.51,95%CI:-2.93 to-0.09)of weaned piglets were significantly increased by feeding 1%to 2%medium chain fatty acids.The mediumchain fatty acid can improve growth performance of weaned piglets.In addition,feeding duration over 30 days and feeding dose of 1%to 2%can both improve the average daily gain and reduce the feed/gain of weaned piglets.
作者
宫田庚
刘孟宇
宋文
尹国安
GONG Tiangeng;LIU Mengyu;SONG Wen;YIN Guoan(Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region,College of Animal Science and Veterinary Medicine,Heilongjiang Bayi Agricultural University,Daqing 163711,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2022年第12期7628-7638,共11页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
黑龙江省普通本科高等学校青年创新人才培养计划(UNPYSCT-2017107)。
关键词
META分析
中链脂肪酸
断奶仔猪
生长性能
Meta-analysis
medium chain fatty acid
weaned piglets
growth performance
