Engormix/Poultry Industry/Technical articles

The Influence of Fibre on Gut Physiology and Feed Intake Regulation

Published on: 6/4/2020
Author/s : B. Svihus 1 and A. K. Hervik 2 / 1 Norwegian University of Life Sciences, P. O. Box N-1432 Aas, Norway; 2 Inland Norway University of Applied Sciences, P. O. Box 400, N-2418, Elverum, Norway.
Summary

Abstract

Fibre is an intrinsic component of animal diets. Depending on chemical structure and physicochemical properties, fibre may affect both gut physiology and feed intake. In some species, viscous soluble fibres are linked to an increased satiety caused by gastric distension and a slower emptying rate, and thereby a reduced feed intake. This is at least partly caused by water binding and thus swelling of the fibre-containing stomach contents. Satiety effects induced by short-chain fatty acids produced in the lower digestive tract may also be of importance. Due to the unique grinding role of the avian stomach in the form of a gizzard, fibres in the form of large insoluble structures will have a major impact on the muscular development of this organ. Although development of the gizzard does not seem to have any systematic effect on feed intake, the increased grinding ability and the improved regulation of feed flow results in improvements in nutrient digestibility.

 

Presented at the International Fibre Summit 2019 (https://internationalfibre.com/). Reproduced with permission from the organizers.

 
Author/s :
New President of the WPSA European Federation) Professor of nutrition, with poultry and human nutrition and feed technology as his current topics for teaching and research at the Norwegian University of Life Sciences (NULS). Since finishing his PhD on methods to reduce anti-nutritive effects of beta-glucans from barley in poultry diets, his research interests have centred around carbohydrates and diet structure-digestive system interactions.
 
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