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Digestion and metabolism of dietary fat in farm animals

Published online by Cambridge University Press:  09 March 2007

Michel Doreau  and
Yves Chilliard
Michel Doreau
Affiliation:
Institut National de la Recherche Agronomique, Laboratoire Sous-Nutrition des Ruminants, Theix, 63122 Saint Genès Champanelle, France
Yves Chilliard
Affiliation:
Institut National de la Recherche Agronomique, Laboratoire Sous-Nutrition des Ruminants, Theix, 63122 Saint Genès Champanelle, France
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Abstract

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Fat digestion and metabolism differ widely between animal species. In ruminants, dietary fats are hydrogenated in the rumen before intestinal absorption so that absorbed fatty acids (FA) are more saturated than dietary FA. In non-ruminants, intestinal FA digestibility depends on the level of saturation of dietary FA. Fat supplementation of the diet of cows decreases milk protein and has a variable effect on milk fat, depending on the source of dietary lipids. When encapsulated lipids are used, the linoleic acid content of milk is increased, but the organoleptic quality of milk may be altered. Supplementary lipids are incorporated into non-ruminant body fat, whereas de novo lipogenesis is reduced. There is a close relationship between the nature of dietary FA and non-ruminant body FA.

Keywords

LipidsFat digestionFat metabolism
Type
Fat Digestion and Metabolism in Farm Animals
Information
British Journal of Nutrition , Volume 78 , Issue 1 , July 1997 , pp. S15 - S35
Copyright
Copyright © The Nutrition Society 1997

References

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