title: Effect of vitamin E supplementation on fatty acid composition of muscle and adipose tissues of indoor lambs with special attention on rumen-derived trans monounsaturated fatty acids.
abstract: Thirty male lambs were assigned to one of 3 concentrate diets supplemented with 45 (E0), 286 (E1) or 551 (E2) mg/kg DM of dl-α-tocopheryl acetate to test the effect of vitamin E supplementation on muscle, caudal and perirenal fatty acid (FA) compositions. Specific attention was paid to C18:1 10t, usually observed in high proportions with high-starch or high-unsaturated FA diets. Vitamin E supplementation increased the α-tocopherol plasma concentrations of lambs. It did not modify lamb growth and slaughter parameters. Vitamin E supplementation did not modify FA composition in most tissues but it increased the C18:2 n-6/C18:3 n-3 ratio in muscle and adipose tissues of the E1 group compared to E0 and E2 groups. Vitamin E supplementation enhanced the C18:1 10t proportion in muscle and adipose tissues and it decreased the C18:2 9c,11t proportion in adipose tissues, especially in the E2 group. These changes may not be favourable for the nutritional value of lamb meat.
authors: AgroParisTech, UMR 791 MoSAR, 16 rue Claude Bernard, F-75005 Paris, France; INRA, UMR 791 MoSAR, 16 rue Claude Bernard, F-75005 Paris, France. Electronic address: valerie.berthelot@agroparistech.fr.
authors: V
authors: V
authors: Berthelot
authors: INRA, UMR 791 MoSAR, 16 rue Claude Bernard, F-75005 Paris, France.
authors: L
authors: L
authors: Broudiscou
authors: AgroParisTech, UMR 791 MoSAR, 16 rue Claude Bernard, F-75005 Paris, France; INRA, UMR 791 MoSAR, 16 rue Claude Bernard, F-75005 Paris, France.
authors: P
authors: P
authors: Schmidely
mesh_terms: D000273:Adipose Tissue / Q000737:chemistry*; D000821:Animal Feed; D000818:Animals; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D005229:Fatty Acids, Monounsaturated / Q000378:metabolism*; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000737:chemistry*; D012417:Rumen / Q000737:chemistry; D034561:Sheep, Domestic; D014810:Vitamin E / Q000008:administration & dosage* / Q000032:analysis / Q000097:blood
chemical_list: D005229:Fatty Acids, Monounsaturated; D014810:Vitamin E
keywords: Fatty acid composition; Lamb; Muscle; Trans fatty acids; Vitamin E