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Cereal type and combined xylanase/glucanase supplementation influence the cecal microbiota composition in broilers

Journal of Animal Science and Biotechnology 2022年第5期13卷 1531-1542页

作者： Dimitrios Kouzounis Jannigje G.Kers Natalia Soares Hauke Smidt Mirjam A.Kabel Henk A.Schols Laboratory of Food Chemistry Wageningen University&Research6708 WG WageningenThe Netherlands Laboratory of Microbiology Wageningen University&Research6708 WE WageningenThe Netherlands Huvepharma NV 2600 BerchemBelgium

Dietary fiber-degrading enzyme supplementation in broilers aims at off-setting the anti-nutritive effect of non-starch polysaccharides and at promoting broiler ***,we demonstrated that xylanase/glucanase addition in wheat-based diet improved nutrient digestibility,arabinoxylan fermentability and broiler ***,maize arabinoxylan was found to be recalcitrant to xylanase *** findings suggested that enzyme-mediated improvement of nutrient digestion and carbohydrate fermentation depended on the cereal type present in the diet,and may have contributed to broiler ***,we aimed at further investigating the link between dietary enzymes and carbohydrate fermentation in broilers,by studying the impact of enzyme supplementation in cereal-based diets,to the microbial communities in the ileum and ceca of *** that purpose,96 one-day-old male broilers were randomly reared in two pens and received either wheat-based or maize-based starter and grower *** d 20,the broilers were randomly assigned to one out of four dietary *** broilers received for 8 d the wheat-based or maize-based finisher diet as such(Control treatments;WC,MC)or supplemented with a xylanase/glucanase combination(Enzyme treatments;WE,ME).At d 28,samples from the digestive tract were collected,and the ileal and cecal microbiota composition was determined by 16S ribosomal RNA gene amplicon sequencing.A similar phylogenetic(alpha)diversity was observed among the four treatments,both in the ileal and the cecal ***,a similar microbial composition in the ileum(beta diversity)was observed,with lactobacilli being the predominant community for all *** contrast,both cereal type and enzyme supplementation were found to influence cecal *** type of cereal(i.e.,wheat or maize)explained 47% of the total variation in microbial composition in the *** stratifying the analysis per cereal type revealed differences in microbio

关键词： Arabinoxylo-oligosaccharides broiler gut microbiota Cereal non-starch polysaccharides Feed enzymes Fiber fermentation Prebiotics 16S rRNA

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