In ovo sodium butyrate administration differentially impacts growth performance, intestinal barrier function, immune response, and gut microbiota characteristics in low and high hatch-weight broilers  

作　　者：Muhammad Zeeshan Akram Nadia Everaert Aleksandra Dunisławska 

机构地区：[1]Department of Biosystems,Nutrition and Animal‑Microbiota Ecosystems Laboratory,KU Leuven,Heverlee 3001,Belgium [2]Precision Livestock and Nutrition Unit,Gembloux Agro‑Bio Tech,University of Liege,Gembloux 5030,Belgium [3]Department of Animal Biotechnology and Genetics,Faculty of Animal Breeding and Biology,Bydgoszcz University of Science and Technology,Bydgoszcz 85‑084,Poland

出　　处：《Journal of Animal Science and Biotechnology》2025年第2期845-865,共21页畜牧与生物技术杂志(英文版)

基　　金：financially supported article publication charges under the program"Regional Initiative of Excellence"(RID/SP/0017/2024/01);funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 955374。

摘　　要：Background Hatch weight(HW)affects broiler growth and low HW(LHW)often leads to suboptimal performance.Sodium butyrate(SB)has been shown to promote growth through enhanced intestinal health.This study investi-gated how broilers with different HW responded to in ovo SB injection and whether SB could enhance gut health and performance in LHW chicks.Ross 308 broiler eggs were injected on incubation d 12 with physiological saline(control)or SB at 0.1%(SB1),0.3%(SB3),or 0.5%(SB5).Post-hatch,male chicks from each treatment were categorized as high HW(HHW)or LHW and assigned to 8 groups in a 4×2 factorial design.Production parameters were recorded periodically.Intestinal weight,length,and gene expression related to gut barrier function and immune response were examined on d 14 and 42.Cecal microbiota dynamics and predicted functionality were analyzed using 16S rRNA gene sequencing.Results SB treatments did not affect hatchability.HHW-control group exhibited consistently better weight gain and FCR than LHW-control group.SB dose-dependently influenced performance and gut health in both HW catego-ries,with greater effects in LHW broilers at 0.3%.LHW-SB3 group attained highest body weight on d 42,exceeding controls but not significantly differing from HHW-SB3 group.LHW-SB3 group showed upregulation of gut-barrier genes CLDN1 in ileum,TJP1 in jejunum and anti-inflammatory cytokine IL-10 in both jejunum and ileum on d 14.Addi-tionally,LHW-SB3 group upregulated mucin-producing MUC6 gene in ileum,while HHW-SB5 group increased pro-inflammatory IL-12p40 cytokine in caecum on d 42.LHW-SB3 group demonstrated shorter relative intestinal lengths,while HHW-SB5 had longer lengths.HHW-control group had higher bacterial diversity and growth-promoting bacte-ria while LHW-control group harbored the potential pathogen Helicobacter.SB reshaped gut microbiota biodiversity,composition,and predicted metabolic pathways in both HW categories.The LHW-SB3 group exhibited highest alpha diversity on d 14 and most beneficial bacteria at all timepoint

关 键 词：Broiler production Flock uniformity Gut health In ovo stimulation MICROBIOME 

分 类 号：S831.2[农业科学—畜牧学]