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Effects of guar gum on plasma urea, insulin and glucose in the growing pig

Published online by Cambridge University Press:  09 March 2007

Kjell MalmlÖf ,
Carlos Simoes Nunes  and
Stefan Askbrant
Kjell MalmlÖf
Affiliation:
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
Carlos Simoes Nunes
Affiliation:
INRA, Laboratoire de Physiologie de la Nutrition, Centre National de Recherches Zootechniques, 78350 Jouy-en-Josas, France
Stefan Askbrant
Affiliation:
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
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Abstract

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1. Six growing pigs fitted with portal and arterial blood cannulas were given a barley-fishmeal diet, either alone or supplemented with guar gum at 60 g/kg basal diet. Blood samples were taken during 8 h following test meals given at 08.00 hours.

2. Ingestion of the guar-gum-supplemented diet appeared to increase systematically portal and arterial levels of plasma urea. At peak values, 4 and 5 h after the test meal, this effect was statistically significant (P <0.05).

3. Irrespective of which diet was given, portal and arterial blood samples, withdrawn at the same time, were found to have about the same concentration of urea. This was found throughout the 8 h studied and implies that no net exchange of urea between the circulation and the gastrointestinal tract, as a whole, took place.

4. In the time-period 30–60 min following the test meal, guar gum significantly reduced the postprandial hyperglycaemia and hyperinsulinaemia in portal blood.

Type
Dietary Polysaccharides: Metabolic Effects
Information
British Journal of Nutrition , Volume 61 , Issue 1 , January 1989 , pp. 67 - 73
Copyright
Copyright © The Nutrition Society 1989

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