Effects of sex on fat deposition through gut microbiota and short-chain fatty acids in weaned pigs

作     者：Linfang Yao Bo Wang Yu Wang Jie Bai Yiming Gao Xintong Ru Chongpeng Bi Jianping Li Anshan Shan Linfang Yao;Bo Wang;Yu Wang;Jie Bai;Yiming Gao;Xintong Ru;Chongpeng Bi;Jianping Li;Anshan Shan

作者机构：College of Animal Science and TechnologyNortheast Agricultural UniversityHarbin 150030China 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2024年第17卷第2期

页      面：100-109页

核心收录：

学科分类：0905[农学-畜牧学] 09[农学] 

基　　金：funded by National Key R&D Program of China(2021YFD1300402) 

主　　题：Sex Body composition Nutrient deposition Gut microbiota Short-chain fatty acid Weaned piglet 

摘      要：Nitrogen pollution resulting from excessive feed consumption poses a significant challenge for modern swine *** nutrition technology seems to be an effective way to solve this problem;therefore,understanding the law of pig body composition deposition is a *** study investigated the sex effects on growth performance,body composition,nutrient deposition,gut micro-biota,and short-chain fatty acids(SCFA)in weaned *** weaned pigs were randomly allocated to 2 treatments according to the sex of *** individual pig was considered as a treatment *** body weights(BW 5,7,11,15,20,and 25 kg)were chosen as experimental points;for each point 10 piglets close to the average BW(5 males and 5 females)were slaughtered,and there was one growth phase between each 2 BW *** indicated that the males had higher average daily gain(ADG)and average daily feed intake(ADFI)compared to the females(P0.05)at growth phases 15 to 20 kg BW and 20 to 25 kg ***,males at 20 kg BW had higher body fat content than females(P0.10).Males showed a higher body fat(P0.05)deposition rate at phase 15 to 20 kg BW(P0.05)than *** pigs at 20 kg BW,the relative abundance of Ruminococcaceae UCG-005,Clostridium,Chris-tensenellaceae_R-7_group,and Peptostreptococcaceae was significantly increased in males(P0.05)but that of Bifidobacterium was decreased(P0.05).At 25 kg BW,the relative abundance of Ruminococca-ceae_NK4A214_group,Fibrobacter,Ruminococcaceae UCG-009,Ralstonia,Klebsiel,and Christensenella-ceae_R-7_group in males was higher when compared with females(P0.05).In terms of SCFA,females exhibited higher concentrations of propionate compared to males(P0.05).The results of the current study indicated that sex influenced fat deposition through changes in the composition of gut microbiota and the content of SCFA,which has significant implications for the realization of precision nutrition in modern swine production.