Benefits of tributyrin on growth performance,gastrointestinal tract development,ruminal bacteria and volatile fatty acid formation of weaned Small-Tailed Han lambs

作     者：Zhiwei Li Xueer Wang Wei Wang Ran An Yaxin Wang Qingchang Ren Jingjing Xuan Zhiwei Li;Xueer Wang;Wei Wang;Ran An;Yaxin Wang;Qingchang Ren;Jingjing Xuan

作者机构：College of Animal ScienceAnhui Science and Technology UniversityFengyang233100China College of Animal Science and TechnologyTarim UniversityAlae843300China Anhui Province Key Laboratory of Animal Nutritional Regulation and HealthAnhui Science and Technology UniversityFengyang233100China School of Finance and EconomicsAnhui Science and Technology UniversityBengbu233030China 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2023年第15卷第4期

页      面：187-196页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 0906[农学-兽医学] 09[农学] 

基　　金：The authors gratefully acknowledge the financial support of the Natural Science Foundation of Anhui Provincial Science and Technology Department(project no.2108085MC112) 2022 Excellent Young Talent Support Program in colleges and universities of The Working Committee of The CPC Anhui Provincial Committee Education(project no.gxyq2022054) 2021 Rural Revitalization Projects of Guzhen County Bureau of Science and Technology(project no.2021GZXCZXKJXM02) talent development program“Young and Middle-aged Subject Leaders Training Object”from personnel department of Anhui Science and Technology University 

主　　题：Tributyrin Bacteria Gastrointestinal tract Growth Weaned lamb 

摘      要：This study aimed to determine the effects of tributyrin on growth performance,gastrointestinal tract development,ruminal bacteria and volatile fatty acid(VFA)*** healthy weaned SmallTailed Han female lambs at 3 months old with BW 27.5±4.1 kg(mean±SD)were randomly assigned to five groups of six lambs each,and each group received tributyrin at 0,0.5,1.0,2.0 and 4.0 g/kg in *** were measured before the start and end of the *** 15 d adaptation,DMI,feed,faeces and urine were recorded every *** were sacrificed at d *** to lambs fed no tributyrin,lambs fed 4.0 g/kg tributyrin had higher average daily BW gain(P=0.04)and DMI(P0.01).Tributyrin reduced nitrogen(P0.01),Ca(P0.01)and P(P0.01)losses derived from faeces and *** mostly important,tributyrin increased dorsal sac thickness(P0.01),papillae length(P=0.04)and width(P0.01),ventral sac papillae length(P0.01)and width(P0.01),caudodorsal blind sac thickness(P=0.02),papillae length(P0.01)and width(P0.01).Furthermore,tributyrin increased thicknesses of both the duodenum(P0.01)and ileum(P=0.01),and villus heights of the duodenum(P=0.01),ileum(P0.01),jejunum(P0.01)and caecum(P=0.02),but tributyrin decreased duodenal(P0.01)and caecal crypt depths(P0.01).Tributyrin reduced rumen pH(P0.01)while promoting total VFA concentration(P0.01).Tributyrin improved the structure of rumen bacteria by enhancing Clostridium(P=0.04),Butyrivibrio(P0.01),Streptococcus(P=0.04),Prevotella(P=0.04),Ruminobacter(P=0.02)and Fibrobacter(P=0.03).In conclusion,tributyrin could stimulate gastrointestinal tract development by enhancing colonization of rumen VFA-producing bacteria,and dietary supplementation of tributyrin at 4.0 g/kg of DM was recommended for the weaned lambs.