title: Egg yolk polyunsaturated fatty acids and vitamin E content alters the tocopherol status of hatched chicks.
abstract: Polyunsaturated fatty acid composition and tocopherol status of newly hatched chicks from hens fed diets containing 3.5% menhaden (MO), flax (LO), palm (PO), or sunflower oils (SO) with (+T) or without tocopherols were examined. Addition of tocopherols increased (P < 0.05) the tocopherol content of eggs and hatched chick tissues. The total tocopherol content was lower (P < 0.05) in MO + T eggs than in LO + T, PO + T, or SO + T eggs. The tocopherol content of chick tissues was as follows liver > plasma > brain. Among the tocopherol-supplemented group, The MO + T chicks incorporated the lowest (P < 0.05) level of total tocopherols in the liver and plasma when compared to chicks hatched from LO + T, PO + T, or SO + T eggs. Brain tissue incorporated the lowest level of tocopherols among all the tissues examined. The fourfold increase in egg tocopherols did not alter the brain tocopherol in MO + T, LO + T, or SO + T chicks. In the MO and LO eggs, there was a significant increase (P < 0.05) in n-3 PUFA when compared with SO or PO eggs. The C22:6 n-3 content in liver and plasma was higher (P < 0.05) in chicks hatched from MO and LO eggs than in chicks hatched from PO or SO eggs. The brain tissue of MO chicks incorporated the highest (P < 0.05) levels of C22:6 n-3 followed by the brain tissue of LO chicks.
authors.affiliation: Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, Canada.
authors.forename: G
authors.initials: G
authors.lastname: Cherian
authors.forename: J S
authors.initials: JS
authors.lastname: Sim
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D002642:Chick Embryo / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism; D002645:Chickens / Q000097:blood* / Q000378:metabolism* / Q000502:physiology; D004032:Diet / Q000662:veterinary; D004041:Dietary Fats / Q000378:metabolism / Q000494:pharmacology; D004042:Dietary Fats, Unsaturated / Q000378:metabolism / Q000494:pharmacology; D004530:Egg Yolk / Q000737:chemistry* / Q000378:metabolism; D015525:Fatty Acids, Omega-3 / Q000032:analysis / Q000378:metabolism / Q000494:pharmacology; D043371:Fatty Acids, Omega-6; D005231:Fatty Acids, Unsaturated / Q000032:analysis* / Q000378:metabolism / Q000494:pharmacology; D005260:Female; D008099:Liver / Q000737:chemistry* / Q000196:embryology; D014810:Vitamin E / Q000032:analysis* / Q000097:blood / Q000494:pharmacology
chemical_list: D004041:Dietary Fats; D004042:Dietary Fats, Unsaturated; D015525:Fatty Acids, Omega-3; D043371:Fatty Acids, Omega-6; D005231:Fatty Acids, Unsaturated; D014810:Vitamin E