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dc.contributor.authorSais, Mounira
dc.contributor.authorBarroeta, Ana C.
dc.contributor.authorLópez-Colom, Paola
dc.contributor.authorNofrarías, Miquel
dc.contributor.authorMajó, Natàlia
dc.contributor.authorLopez-Ulibarri, Rual
dc.contributor.authorPérez Calvo, Estefanía
dc.contributor.authorMartín-Orúe, Susana M.
dc.contributor.otherProducció Animalca
dc.date.accessioned2020-04-16T14:02:49Z
dc.date.available2020-04-16T14:02:49Z
dc.date.issued2019-12-30
dc.identifier.citationSais, Mounira, Ana C. Barroeta, Paola López-Colom, Miquel Nofrarías, Natàlia Majó, Rual Lopez-Ulibarri, Estefanía Pérez Calvo, and Susana M. Martín-Orúe. 2020. "Evaluation Of Dietary Supplementation Of A Novel Microbial Muramidase On Gastrointestinal Functionality And Growth Performance In Broiler Chickens". Poultry Science 99 (1): 235-245. Elsevier BV. doi:10.3382/ps/pez466.ca
dc.identifier.issn0032-5791ca
dc.identifier.urihttp://hdl.handle.net/20.500.12327/690
dc.description.abstractThis study was conducted to assess the effect of dietary supplementation of Muramidase 007 to broiler chickens on gastrointestinal functionality, evaluating growth performance, apparent ileal digestibility, intestinal histomorphology, vitamin A in plasma and cecal microbiota. A total of 480 one-day male chicks (Ross 308) were distributed in 16 pens allocated in 2 experimental diets: the control diet (CTR) without feed enzymes, coccidiostat or growth promoters, and the experimental diet (MUR): CTR supplemented with 35,000 units (LSU(F))/kg of the Muramidase 007. Digesta and tissue samples were obtained on days 9 and 36 of the study. A lower feed conversion ratio was observed in the MUR treatment. Apparent ileal digestibility of DM, organic matter and energy were improved by Muramidase 007. It was also observed that MUR improved digestibility of total fatty acids, mono-unsaturated fatty acids and poly-unsaturated fatty acids, and content of vitamin A in plasma at day 9 (P < 0.05). Histomorphological analysis of jejunum samples revealed no differences in the villus height or crypt depth; but a higher number of goblet cells and intraepithelial lymphocytes at day 36 with MUR. No differences were observed in plate counts of enterobacteria or Lactobacillus along the gastrointestinal tract, neither on the cecal short-chain fatty acids. An statistical trend was observed for reduction of cecal clostridia at day 9 for MUR. Analysis of cecal microbiota structure by 16S rRNA gene sequencing revealed relevant changes correlated to age. At day 9, broilers receiving MUR showed decreased alpha diversity compared to CTR that was not detected at day 36. Changes in specific taxonomic groups with an increase in Lactobacillus genus were identified. In conclusion, evaluation of the variables in this study indicates that dietary Muramidase 007 contributes to improve feed conversation ratio and gastrointestinal function in broiler chickens. Effects could have been mediated by slight shifts observed in the intestinal microbiota. More studies are guaranteed to fully understand the mechanisms involved.ca
dc.format.extent11ca
dc.language.isoengca
dc.publisherOxford University Pressca
dc.relation.ispartofPoultry Scienceca
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalca
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleEvaluation of dietary supplementation of a novel microbial muramidase on gastrointestinal functionality and growth performance in broiler chickensca
dc.typeinfo:eu-repo/semantics/articleca
dc.description.versioninfo:eu-repo/semantics/publishedVersionca
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapca
dc.subject.udc619ca
dc.identifier.doihttps://doi.org/10.3382/ps/pez466ca
dc.contributor.groupSanitat Animalca


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