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Biotin studies in pigs

3. Biotin absorption and synthesis

Published online by Cambridge University Press:  09 March 2007

J. S. Kopinski ,
Jane Leibholz  and
W. L. Bryden
J. S. Kopinski
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, New South Wales 2570, Australia
Jane Leibholz
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, New South Wales 2570, Australia
W. L. Bryden
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, New South Wales 2570, Australia
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Abstract

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Eight pigs were given a semi-purified diet based on maize flour and casein containing 10 μg biotin/kg. The diet was given ad lib. with or without a supplement of 70 μg biotin/kg diet from 5 to 94 d of age. The flow of biotin in the stomach was similar to the biotin intake (13.5 and 112 μg/d) for the unsupplemented and biotin-supplemented pigs respectively. The flow of biotin through the small intestine decreased for the biotin-supplemented pigs from 39 μg/d in the first quarter of the small intestine to 7.9 μg/d in the last quarter. The flows of biotin in the caecum, large intestine and colon were similar for both the unsupplemented and biotin-supplemented pigs, with values of 17–54 μg/d, indicating the synthesis of biotin in the hind-gut.

Keywords

Biotin synthesisPig
Type
Vitamins
Information
British Journal of Nutrition , Volume 62 , Issue 3 , November 1989 , pp. 767 - 772
Copyright
Copyright © The Nutrition Society 1989

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