Influence of dietary Vitamin E level on egg production of broiler breeders, and on the growth and immune response of progeny in comparison with the progeny from eggs injected with Vitamin E

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1016/S0377-8401(98)00149-7
Auteur	Rechercher : Hossain, S. M.; Rechercher : Barreto, S. L.; Rechercher : Bertechini, A. G.; Rechercher : Rios, A. M.; Rechercher : Silva, C. G.
Format	Texte, Article
Sujet	vitamin E; broiler breeder; in ovo; offspring performance; immunity
Résumé	Broiler breeders were allocated at random to one of four experimental diets containing graded levels of supplementary Vitamin E (25, 50, 75 and 100mgkg−1) between 24–54 weeks. At 40 weeks of age, eggs from breeder hens receiving 25mgkg−1 diet were subjected to in ovo injection of Vitamin E at a level of 0, 2.5 and 5.0mg per egg. Hen housed egg production, egg weight, hatchability, neonatal chick weight and performance of offspring broilers were not influenced by the levels of Vitamin E in the breeder diets. The Vitamin E content in the eggs was significantly (P≤0.001) increased by the increasing supplements of Vitamin E up to 75mgkg−1. The chicks hatched from the eggs of the breeders receiving dietary supplement of Vitamin E or from the eggs injected with Vitamin E at a level of 2.5 or 5.0mg per egg were used to determine growth and immune response to 21 days in battery brooders and growth performance to 42 days in floor pens. No significant difference in growth performance at 21 days were observed due to the dietary Vitamin E supplements or Vitamin E injection in the eggs. The antibody titers to killed Newcastle disease vaccine were significantly (P≤0.05) increased by the level of Vitamin E supplements in the diets or direct injection into eggs and, in ovo administration was more efficient in increasing the immune response. Higher final body weight at 42 days, feed conversion efficiency and reduced mortality (P≤0.05) were observed with the broilers hatched from eggs injected with Vitamin E.
Date de publication	1999-01-04
Maison d’édition	Elsevier
Dans	Animal Feed Science and Technology 73, nº 3-4 : 307–317.
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	23001535
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	9f74e57e-8f6c-49f6-968a-629f39c5f4dd
Enregistrement créé	2017-03-02
Enregistrement modifié	2020-03-20

Date de modification :: 2024-04-16