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

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
Publication Date
1999
Author(s)
Choct, Mingan
( author )
OrcID: https://orcid.org/0000-0002-2242-8222
Email: mchoct@une.edu.au
UNE Id une-id:mchoct
Hughes, Robert J
Bedford, M R
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Taylor & Francis
Place of publication
United Kingdom
DOI
10.1080/00071669987548
UNE publication id
une:13436
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.
Link
Citation
British Poultry Science, 40(3), p. 419-422
ISSN
1466-1799
0007-1668
Start page
419
End page
422

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