title: Accumulation of alpha-tocopherol in eggs enriched with omega3 and omega6 polyunsaturated fatty acids.
abstract: The objective of the present study was to evaluate the pattern of accumulation of alpha-tocopherol (alpha-Toc) in egg as a response to dietary supplementation with 200 mg/kg diet of alpha-tocopheryl acetate (alpha-TA) and whether the inclusion of dietary oils with different fatty acid (FA) composition affected this parameter. Forty hens were randomly distributed into two treatments resulting from the supplementation of a basal diet containing 200 mg/kg alpha-TA with either 5% linseed oil (LO) or sunflower oil (SO). alpha-Tocopherol concentration of eggs was measured at 0, 4, 9, 14, 19, and 50 d after inclusion of the experimental diets. Results show that alpha-Toc concentration in the egg increased after the 4th d of feeding, reaching its maximum level at 14 d (168 microg/g egg), after which it decreased 10 to 12% until 19 d, obtaining similar values at 50 d (145 microg/g egg). No differences were observed between dietary oils in the deposition pattern of alpha-Toc in the egg.
authors.affiliation: Departament de Ciència Animal i dels Aliments, Facultat Veterinària, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Galobart
authors.forename: A C
authors.initials: AC
authors.lastname: Barroeta
authors.forename: L
authors.initials: L
authors.lastname: Cortinas
authors.forename: M D
authors.initials: MD
authors.lastname: Baucells
authors.forename: R
authors.initials: R
authors.lastname: Codony
mesh_terms: D000818:Animals; D002645:Chickens / Q000378:metabolism*; D004042:Dietary Fats, Unsaturated / Q000008:administration & dosage*; D004531:Eggs / Q000032:analysis*; D015525:Fatty Acids, Omega-3 / Q000008:administration & dosage*; D043371:Fatty Acids, Omega-6; D005231:Fatty Acids, Unsaturated / Q000008:administration & dosage*; D005260:Female; D008043:Linseed Oil / Q000008:administration & dosage; D010938:Plant Oils / Q000008:administration & dosage; D000074242:Sunflower Oil; D013997:Time Factors; D024502:alpha-Tocopherol / Q000008:administration & dosage / Q000032:analysis*
chemical_list: D004042:Dietary Fats, Unsaturated; D015525:Fatty Acids, Omega-3; D043371:Fatty Acids, Omega-6; D005231:Fatty Acids, Unsaturated; D010938:Plant Oils; D000074242:Sunflower Oil; D008043:Linseed Oil; D024502:alpha-Tocopherol