Maternal diet with diverse omega-6/omega-3 ratio affects the brain docosahexaenoic acid content of growing chickens

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1159/000071443
Auteur	Rechercher : Ajuyah, A. O.; Rechercher : Wang, Y.; Rechercher : Sunwoo, H.; Rechercher : Cherian, G.; Rechercher : Sim, J. S.
Format	Texte, Article
Sujet	brain; chicken; docosahexaenoic acid; ω–6/ω–3 ratio
Résumé	Eggs with diverse omega-6/omega-3 ratio produced by feeding breeder hens a wheat-soybean meal-basal diet containing 5% (wt/wt) sunflower oil (H(omega)6), 5% fish oil (H(omega)3) or 2.5% sunflower oil plus 2.5% fish oil (M(omega)3omega6) were incubated. The hatched chicks were fed a docosahexaenoic acid (DHA)-deficient diet up to 6 weeks of age. The fatty acid composition of chick brain was determined on 0, 2, 4 and 6 weeks and brain weight was taken on day 0 and day 42. The omega-6/omega-3 ratios were 37.12, 4.21 and 0.98 for the maternal diet; 28.36, 2.83 and 0.89 for the egg yolk; 1.94, 0.48 and 0.18 for hatched chick brain (p < 0.05). At 2 weeks of age, the omega-6/omega-3 ratios were 1.88, 0.81 and 0.60 for chicks hatched from hens fed H(omega)6, M(omega)3omega6 and H(omega)3 diets, respectively. The brain DHA contents at 0 and 2 weeks of age were Homega3 > M(omega)3omega6 < H(omega)6 (p < 0.05) and at 4 and 6 weeks of age H(omega)3 = M(omega)3omega6 > H(omega)6. Dietary C18:3omega3 in the starter and finisher diet did not increase brain DHA (p > 0.05). The significant increase in the content of C22:5omega3 at 6 weeks of age in group 1 birds with a concomitant reduction in DHA suggests a weak delta-4 desaturation but an effective delta-6 and delta-5 desaturation similar to human infants. Considering the role of DHA in early brain development and growth, the maternal supply of DHA during growth might be of importance when fed a DHA-deficient neonatal diet.
Date de publication	2003-07-25
Maison d’édition	Karger Publishers
Dans	Biology of the Neonate 84, nº 1 (25 juillet 2003) : 45–52.
Langue	anglais
Publications évaluées par des pairs	Oui
Publication du CNRC	Cette publication n’est pas du CNRC Ce sont des publications qui ont été rédigées par un auteur du CNRC, mais avant que celui-ci soit employé du CNRC.
Numéro NPARC	23001744
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Identificateur de l’enregistrement	8a0297c1-250d-416e-9be3-af45a7fe7fac
Enregistrement créé	2017-03-27
Enregistrement modifié	2023-05-09

Date de modification :: 2024-10-14