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Title: Effects of a xylanase on individual bird variation, starch digestion throughout the intestine, and ileal and caecal volatile fatty acid production in chickens fed wheat
Contributor(s): Choct, Mingan  (author)orcid ; Hughes, Robert J (author); Bedford, M R (author)
Publication Date: 1999
DOI: 10.1080/00071669987548
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Abstract: 1. The effects of a xylanase on digesta viscosity and starch digestibility throughout the small intestine and volatile fatty acid production in the ileum and caeca were investigated in broilers fed on a low-metabolisable energy wheat diet. 2. The xylanase reduced (P <0.01) duodenal (2.9 vs 1 7), jejunal (4.6 vs 2.3) and ileal (14.0 vs 3.9) digesta viscosities (mPas) and increased AME (P <0 01) of the wheat and starch digestibility (P <0.5) in the jejunum and ileum. Between-bird variability in ME and digestibility of starch was also reduced. 3. Enzyme supplementation reduced (P <0.05) fermentation in the ileum, but increased (P <0.05) it in the caeca. 4. The anti-nutritive effect of soluble non-starch polysaccharides (NSP) is related to their ability to increase digesta viscosity along the gut; this in turn causes changes in gut microflora and efficiency of nutrient utilisation by the chicken. Use of appropriate enzymes is an effective way of dealing with grains with high NSP content in poultry diets.
Publication Type: Journal Article
Source of Publication: British Poultry Science, 40(3), p. 419-422
Publisher: Taylor & Francis
Place of Publication: United Kingdom
ISSN: 1466-1799
Fields of Research (FoR) 2008: 070204 Animal Nutrition
Socio-Economic Objective (SEO) 2008: 830309 Poultry
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

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