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Supplementation of a lacto-fermented rapeseed-seaweed blend promotes gut microbial-and gut immune-modulation in weaner piglets

引用

Journal of Animal Science and Biotechnology 2022年第1期13卷 138-151页

作者： Yan Hui Paulina Tamez-Hidalgo Tomasz Cieplak Gizaw Dabessa Satessa witold kot Søren Kjærulff Mette Olaf Nielsen Dennis Sandris Nielsen Lukasz Krych Department of Food Science Faculty of ScienceUniversity of CopenhagenRolighedsvej 26DK-1958 Frederiksberg CDenmark Fermentationexperts A/S.Vorbassevej 12 DK-6622 BaekkeDenmark Department of Veterinary and Animal Sciences Faculty of Health and Medical SciencesUniversity of CopenhagenGrønnegårdsvej 3DK-1870 Frederiksberg CDenmark Department of Plant and Environmental Sciences Faculty of ScienceUniversity of CopenhagenRolighedsvej 26DK-1958 Frederiksberg CDenmark Department of Animal Science Faculty of Technical SciencesAarhus UniversityBlichers Alle 20DK-8830 TjeleDenmark

Background:The direct use of medical zinc oxide in feed will be abandoned after 2022 in Europe,leaving an urgent need for substitutes to prevent post-weaning ***:This study investigated the effect of using rapeseed-seaweed blend(rapeseed meal added two brown macroalgae species Ascophylum nodosum and Saccharina latissima)fermented by lactobacilli(FRS)as feed ingredients in piglet *** d 28 of life to d 85,the piglets were fed one of three different feeding regimens(n=230 each)with inclusion of 0%,2.5% and 5% *** this period,no significant difference of piglet performance was found among the three *** a subset of piglets(n=10 from each treatment),blood samples for hematology,biochemistry and immunoglobulin analysis,colon digesta for microbiome analysis,and jejunum and colon tissues for histopathological analyses were *** piglets fed with 2.5% FRS manifested alleviated intraepithelial and stromal lymphocytes infiltration in the gut,enhanced colon mucosa barrier relative to the 0% FRS *** colon microbiota composition was determined using V3 and V1-V8 region 16S rRNA gene amplicon sequencing by Illumina NextSeq and Oxford Nanopore MinION,*** two amplicon sequencing strategies showed high consistency between the detected *** sequencing strategies indicated that inclusion of FRS reshaped the colon microbiome of weaned piglets with increased Shannon *** stercorea was verified by both methods to be more abundant in the piglets supplied with FRS feed,and its abundance was positively correlated with colonic mucosa thickness but negatively correlated with blood concentrations of leucocytes and ***:FRS supplementation relieved the gut lymphocyte infiltration of the weaned piglets,improved the colon mucosa barrier with altered microbiota *** the dietary inclusion of FRS from 2.5% to 5% did not lead to further improvements.

关键词： Amplicon sequencing Colon microbiota Fermented feed Gut barrier

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