Dietary fat modulates dl-α-tocopheryl acetate (vitamin E) bioavailability in adult cockerels - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue British Poultry Science Année : 2015

Dietary fat modulates dl-α-tocopheryl acetate (vitamin E) bioavailability in adult cockerels

Résumé

A trial was designed to assess the effect of fat supplementation (amount and type of fatty acids) on vitamin E bioavailability in adult cockerels. A total of 60 birds were force-fed three different diets: a semi-purified diet without added fat (Control diet) or supplemented with 3% fat as linseed (Linseed diet) or hydrogenated coconut oil (Coconut diet). The three experimental diets were also supplemented with dl-alpha-tocopheryl acetate to provide 40mg vitamin E per bird. After oneweek of depletion, blood was collected from the wing vein before (baseline) and 6, 12, 24 and 96h after the gavage. Plasma samples were analysed for their alpha-tocopherol, cholesterol and triglycerides concentrations. Results showed that the addition of 3% fat in the experimental diet increased post-gavage plasma alpha-tocopherol response by 153% for Linseed diet and by 75% for Coconut diet (P<0.0001) compared to the Control group. Furthermore, the plasma alpha-tocopherol response observed with the Linseed diet was 44% greater than that observed with the Coconut diet (P<0.0001). There was no effect of treatments on either plasma triglycerides (P=0.91) or cholesterol (P=0.45) responses. In conclusion, this study shows that the addition of 3% fat to the diet significantly increases dl-alpha-tocopheryl acetate bioavailability in adult cockerels. Supplementation of fat rich in unsaturated fatty acids also leads to a higher dl-alpha-tocopheryl acetate bioavailability than fat rich in saturated fatty acids.
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Dates et versions

inserm-01478402 , version 1 (28-02-2017)

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P. Prévéraud, E. Devillard, Patrick Borel. Dietary fat modulates dl-α-tocopheryl acetate (vitamin E) bioavailability in adult cockerels. British Poultry Science, 2015, 56 (1), pp.94 - 102. ⟨10.1080/00071668.2014.982074⟩. ⟨inserm-01478402⟩
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