饲料研究2024，Vol.47Issue(13)：88-93,6.DOI:10.13557/j.cnki.issn1002-2813.2024.13.017
不同生长速度猪肠道的形态结构、短链脂肪酸及菌群的分析
Analysis of intestinal morphology structure,short-chain fatty acids,and flora in pigs with different growth rates
摘要
Abstract
The experiment aimed to study the differences in intestinal morphological structure,short-chain fatty acids,and gut microbiota among pigs with different growth rates.Fifty piglets with similar dates and body weights were selected,and determined the growth index data for all pigs at the ages of 60 and 240 days,and the average daily gain(ADG)was calculated.Four pigs with the highest ADG were selected as the high daily weight gain group(HW group),and the four pigs with the lowest ADG were selected as the low daily weight gain group(LW group).Intestinal morphology,the content of short-chain fatty acids in the intestinal contents,and differences in the microbiota were measured.The results showed that in terms of intestinal morphological structure,the relative weight of the large intestine in the HW group was significantly lower than that in the LW group(P＜0.05),while the weight,length,intestinal density,and length of the small intestine were all higher than those in the LW group.In terms of short-chain fatty acids in the intestinal contents,the content of acetic acid in the ileum and colon of the HW group was significantly higher than that in the LW group(P＜0.05),while the content of valeric acid in the ileum and butyric acid in the colon was significantly lower than that in the LW group(P＜0.05).Alpha diversity analysis of the microbial community structure showed that the Ace index in the ileum of the HW group was significantly lower than that in the LW group(P＜0.05).Microbial composition analysis showed that there were two different phyla in ileum and genus,with 14 different genera respectively.The study indicates that there is a certain correlation between the weight,length,and density of the intestine and the growth rate of pigs,the content of volatile fatty acids such as acetic acid,valeric acid,and butyric acid,as well as the gut microbiota,have a regulatory effect on the growth rate of pigs,but the specific mechanisms still need further research.关键词
猪/平均日增重/肠道形态/短链脂肪酸/菌群结构Key words
pig/average daily gain/intestinal morphology/short-chain fatty acids/microbial community structure分类
农业科技引用本文复制引用
刘明君,潘鹏丞,徐文文,潘星辰,覃兆鲜,覃倩,谢炳坤,陈宝剑..不同生长速度猪肠道的形态结构、短链脂肪酸及菌群的分析[J].饲料研究,2024,47(13):88-93,6.基金项目
广西重点研发计划(项目编号:桂科AB21196060) （项目编号:桂科AB21196060）
中央引导地方科技发展专项(项目编号:桂科ZY21195052) （项目编号:桂科ZY21195052）
现代农业广西创新团队生猪首席专家(项目编号:nycytxgxcxtd-2023-15-01) （项目编号:nycytxgxcxtd-2023-15-01）
广西农业职业技术大学校级项目(项目编号:XKJ2365、XKJ2367) （项目编号:XKJ2365、XKJ2367）
广西农业科技自筹经费项目(项目编号:Z2023097) （项目编号:Z2023097）
