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Early transition of the digestive system to exogenous nutrition in domestic post-hatch birds

Published online by Cambridge University Press:  09 March 2007

Y. Pinchasov
Y. Pinchasov
Affiliation:
Department of Animal Science, Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, 76-100, Israel
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Abstract

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The effect of early transition of the digestive system to exogenous nutrition was examined in three experiments with growing birds. A nutrient mixture (0·5 ml) of glucose, starch and oil (1:1:0·5, by vol) was orally administered immediately after hatch to turkey poults (Meleagris gallopavo) having immediate or delayed access to feed (Expt 1). Increasing amounts (0, 0·25 and 0·5 ml) of this mixture were administered immediately after hatch to turkey poults (Expt 2), or to broiler chicks (Gallus domesticus; Expt 3). The relative weights of the gastrointestinal tract (GIT) and its ingesta content, and the amylolytic capability of the pancreas were examined during the immediate post-hatch period (to 30 h). Oral administration of nutrients immediately after hatching only slightly influenced the growth of the pancreas and its amylolytic activity, but significantly increased GIT weight in both species, in a dose-dependent manne. It is suggested that early post-hatching of the digestive system by the forced administration of nutrient mixture induces anatomical and metabolic changes in the digestive system slightly earlier than in birds with late access to feed. This increases GIT content and plasma glucose levels, resulting in enhanced feed consumption and growth promotion.

Keywords

Amylolytic capabilityGastrointestinal tractPost-hatch birdsTurkey poults
Type
Early transition to exogenous nutrition in birds
Information
British Journal of Nutrition , Volume 73 , Issue 3 , March 1995 , pp. 471 - 478
Copyright
Copyright © The Nutrition Society 1995

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