{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T10:43:56Z","timestamp":1783593836751,"version":"3.55.0"},"reference-count":68,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T00:00:00Z","timestamp":1616544000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Microbiol."],"abstract":"<jats:p>This research tested the hypothesis that xylanase modulates microbial communities within the large intestine of growing pigs fed corn-based fiber through a stimbiotic mechanism(s) of action (MOA). Sixty gilts were blocked by initial body weight, individually housed, and randomly assigned to one of four dietary treatments (<jats:italic>n<\/jats:italic> = 15): a low-fiber (LF) control, a high-fiber (HF) control containing 30% corn bran, HF+100 mg\/kg xylanase (HF+XY), and HF+50 mg\/kg arabinoxylan-oligosaccharide (HF+AX). Pigs were fed dietary treatments for 46 days. On day 46, pigs were euthanized, and mucosa and lumen contents were collected from the cecum and the colon. The V4 region of 16S rRNA genes was sequenced and clustered into 5,889, 4,657, 2,822, and 4,516 operational taxonomic units (OTUs), in the cecal contents and mucosa and colonic contents and mucosa, respectively. In cecal contents, HF+XY increased measures of <jats:italic>\u03b1<\/jats:italic>-diversity compared to LF (<jats:italic>p<\/jats:italic> &amp;lt; 0.001). Relative to LF, HF increased the prevalence of 44, 36, 26, and 8, and decreased 19, 9, 21, and 10, of the 200 most abundant OTUs from the cecal contents and mucosa and colonic contents and mucosa, respectively (<jats:italic>Q<\/jats:italic> &amp;lt; 0.05). Compared to LF, HF increased the abundance of OTUs from the <jats:italic>Treponema_2<\/jats:italic>, <jats:italic>Ruminococcus_1<\/jats:italic> genera, from the <jats:italic>Lachnospiraceae<\/jats:italic>, <jats:italic>Ruminococcaceae<\/jats:italic>, and <jats:italic>Prevotellaceae<\/jats:italic> families. In contrast, relative to LF, HF decreased <jats:italic>Turicibacter<\/jats:italic> and <jats:italic>Lactobacillus<\/jats:italic> in the cecal contents, and <jats:italic>Megasphaera<\/jats:italic> and <jats:italic>Streptococcus<\/jats:italic> in the mucosa. Relative to HF, HF+XY increased 32, 16, 29, and 19 and decreased 27, 11, 15, and 10 of the 200 most abundant OTUs from the cecal contents and mucosa and colonic contents and mucosa, respectively (<jats:italic>Q<\/jats:italic> &amp;lt; 0.05). The addition of xylanase to HF further increased the abundance of OTUs from the <jats:italic>Lachnospiraceae<\/jats:italic> and <jats:italic>Ruminococcaceae<\/jats:italic> families across the large intestine. Compared to HF, HF+XY increased the abundance of <jats:italic>Lactobacillus<\/jats:italic>, <jats:italic>Bifidobacterium<\/jats:italic>, and <jats:italic>Faecalibacterium<\/jats:italic> among all locations (<jats:italic>Q<\/jats:italic> &amp;lt; 0.05). However, HF+AX did not increase the prevalence of these genera in the large intestine. Supplementing xylanase to HF increased hidden-state predictions of microbial enzymes associated with arabinoxylan degradation, xylose metabolism, and short-chain fatty acid production. These data suggest xylanase elicits a stimbiotic MOA in the large intestine of pigs fed corn-based fiber.<\/jats:p>","DOI":"10.3389\/fmicb.2021.619970","type":"journal-article","created":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T04:29:18Z","timestamp":1616560158000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":30,"title":["Xylanase Supplementation Modulates the Microbiota of the Large Intestine of Pigs Fed Corn-Based Fiber by Means of a Stimbiotic Mechanism of Action"],"prefix":"10.3389","volume":"12","author":[{"given":"Amy L.","family":"Petry","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John F.","family":"Patience","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nichole F.","family":"Huntley","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucas R.","family":"Koester","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael R.","family":"Bedford","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephan","family":"Schmitz-Esser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,3,24]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"338","DOI":"10.1093\/jas\/sky403","article-title":"Degradation of dietary fiber in the stomach, small intestine, and large intestine of growing pigs fed corn-or wheat-based diets without or with microbial xylanase","volume":"97","author":"Abelilla","year":"2019","journal-title":"J. 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