Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 41520
Title The role of the intestinal flora as affected by non-starch polysaccharides in broiler chicks
Author(s) Langhout, D.J.
Source Agricultural University. Promotor(en): M.W.A. Verstegen; S. Tamminga; J.B. Schutte. - S.l. : S.n. - ISBN 9789054859123 - 173
Department(s) Animal Nutrition
WIAS
Publication type Dissertation, externally prepared
Publication year 1998
Keyword(s) vleeskuikens - kippen - voer - viscositeit - polysacchariden - antinutritionele factoren - darmmicro-organismen - darmen - ileum - dunne darm - verteerbaarheid - pectinen - rogge - tarwe - broilers - fowls - feeds - viscosity - polysaccharides - antinutritional factors - intestinal microorganisms - intestines - ileum - small intestine - digestibility - pectins - rye - wheat
Categories Poultry / Animal Nutrition and Feeding (General)
Abstract

It is well established that the non-starch polysaccharides (NSP) of wheat, rye and barley have anti-nutritive properties in broiler chicks. The water-soluble fraction of these NSP are assumed to be primary responsible for the anti-nutritive activity, producing depression in digestibility of nutrients and performance.

This study was undertaken to investigate the role of the intestinal microflora on the anti-nutritive properties of water-soluble NSP by using citrus pectin as model substrate. Citrus pectin is a highly fermentable NSP fraction of a viscous nature. Inclusion of high-methylated citrus pectin (HMC) in diets of young chicks resulted in a decreased nutrient digestibility and performance. This was associated with an increase of the microbial activity in the small intestine. In addition, ileal composition of the microflora and the morphology of the small intestinal wall was changed. Furthermore, degradation of conjugated bile acids was increased significantly by including HMC in the diet.

The effect of low-methylated citrus pectin (LMC) on these parameters was less pronounced than with HMC. When the HMC diet was fed to germ-free chicks, digestibility of nutrients and performance were hardly affected. It was concluded that the intestinal microflora mediates the magnitude of the anti-nutritive properties of water-soluble NSP in broiler chicks.

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