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Title: Effects of xylanase supplementation on between-bird variation in energy metabolism and the number of 'Clostridium perfringens' in broilers fed a wheat-based diet
Contributor(s): Choct, M  (author)orcid ; Sinlae, M (author); Al Jassim, R (author); Pettersson, D (author)
Publication Date: 2006
DOI: 10.1071/AR05340
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Abstract: Three experiments were conducted to examine: (a) the apparent metabolisable energy (AME) contents, the level of non-starch polysaccharides (NSP), and the extract viscosity value of 9 wheat samples; (b) the efficacy of a xylanase in reducing between-bird variation for AME; and (c) the effect of a xylanase on the number of 'Clostridium perfringens' in broilers fed a low AME wheat diet. Experiment 1 revealed that the AME value of wheat varied from 11.5 to 13.6 MJ/kg dry matter (DM), which negatively correlated with the total NSP level (r = –0.97). Experiment 2 involved a 48-cage individual bird trial, where xylanase increased (P < 0.05) the AME from 12.51 to 13.09 MJ/kg DM and reduced (P < 0.05) its standard deviation from 1.13 to 0.52. The standard deviation for feed conversion ratio, ileal viscosity, and faecal viscosity was also reduced. In this experiment, there was a strong correlation between AME and excreta viscosity (r = –0.81) and the caecal xylanase activity of birds fed the control diet was positively correlated with AME (r = 0.72). In Expt 3, xylanase reduced the number of 'Clostridium perfringens', the causative agent for necrotic enteritis, to a non-detectable level in the ileum and caeca of broilers fed a low-ME wheat diet.
Publication Type: Journal Article
Source of Publication: Australian Journal of Agricultural Research, 57(9), p. 1017-1021
Publisher: CSIRO
Place of Publication: Australia
ISSN: 0004-9409
Field of Research (FOR): 070204 Animal Nutrition
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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