{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,25]],"date-time":"2026-01-25T04:36:33Z","timestamp":1769315793075,"version":"3.49.0"},"reference-count":43,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2022,2,20]],"date-time":"2022-02-20T00:00:00Z","timestamp":1645315200000},"content-version":"am","delay-in-days":354,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#am"},{"start":{"date-parts":[[2021,3,3]],"date-time":"2021-03-03T00:00:00Z","timestamp":1614729600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000199","name":"U.S. Department of Agriculture","doi-asserted-by":"publisher","award":["58\u20106040\u20108\u2010034"],"award-info":[{"award-number":["58\u20106040\u20108\u2010034"]}],"id":[{"id":"10.13039\/100000199","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["scijournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Sci Food Agric"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>BACKGROUND<\/jats:title><jats:p>Dietary supplemental carbohydrases are able to degrade non\u2010starch polysaccharides and generate oligosaccharides in the gastrointestinal tract. This study was conducted to investigate the influence of dietary fiber and protein levels on growth performance, nutrient utilization, digesta oligosaccharides profile and cecal short\u2010chain fatty acid (SCFA) profile in broilers receiving diets supplemented with xylanase or protease individually or in combination.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>Enzyme supplementation had no effect on growth performance. There was significant (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) fiber \u00d7 protein \u00d7 xylanase interaction for ileal nitrogen digestibility and significant (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.01) protein \u00d7 xylanase \u00d7 protease interaction for nitrogen\u2010corrected apparent metabolizable energy. Birds fed high\u2010fiber diets had higher (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) jejunal oligosaccharides and cecal SCFA concentrations. Xylanase and protease combination produced the greatest pentose (Pent) levels in low fiber\u2013adequate protein diets but lowest levels in highfiber\u2013low protein diets. There was significant (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) fiber\u2009\u00d7\u2009xylanase\u2009\u00d7\u2009protease interaction explained by the digesta concentrations of (Pent)<jats:sub>3<\/jats:sub>, (Pent)<jats:sub>4<\/jats:sub> and (Pent)<jats:sub>5<\/jats:sub> being greatest (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.5) in protease\u2010only supplemented high\u2010fiber diets but lowest in protease\u2010only supplemented low\u2010fiber diets.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSION<\/jats:title><jats:p>These results suggest that, of all the factors investigated, dietary fiber level had the greatest effect on modulating digesta concentration of oligosaccharides and cecal SCFA. Evidence points to the fact that there is considerable capacity for generating pentose oligosaccharides in the digestive tract of broilers receiving diets rich in fibrous feedstuffs, and that this may have a beneficial effect on microbial profile in the digestive tract.<\/jats:p><jats:p>\u00a9 2021 Society of Chemical Industry.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jsfa.11165","type":"journal-article","created":{"date-parts":[[2021,2,20]],"date-time":"2021-02-20T05:03:27Z","timestamp":1613797407000},"page":"5190-5201","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Qualitative and quantitative profiles of jejunal oligosaccharides and cecal short\u2010chain fatty acids in broiler chickens receiving different dietary levels of fiber, protein and exogenous 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