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Tipo do documento: Artigo
Título: In ovo supplementation of 25(oh)d3 to broiler embryos
Autor: Gonzales, Elisabeth
Cruz, Cícero Peres da
Leandro, Nadja Susana Mogyca
Stringhini, José Henrique
Brito, Alexandre Barbosa de
Abstract: A dose of 0.3 mL of water solution containing 0.00 (control), 0.625, 1.250 or 1.875 μg of 25-hydroxy cholecalciferol (25(OH)D3) was administered to 312 fertile eggs derived from 49-w-old Cobb 500 broiler breeders on the 17th day of incubation (DE17) via allantoic cavity. After treatment, eggs were distributed and maintained until hatching in four incubators set at 37.8 ºC and 55% RH. Each incubator received eggs from all treatments, according to a block design with four treatments of 77-79 replicates each. Hatching was checked every two hours from 484h to 512h of incubation to evaluate productivity and chick qualities. Chicks were housed until 10 days of age in heated battery cages according to a block design with four treatments of 10 replicates of six chicks each for performance and mortality evaluation. Mean hatching time of the chicks treated with 25(OH)D3 during the embryonic phase occurred 4 to 5 h earlier than control group (502:31h), with no effects on hatching or neonate qualities. An inverse linear effect of 25(OH)D3 dose on chick body weight at hatching was observed, but 10-d-old broiler performance and mortality were not affected. The fast body weight recovery of the broilers obtained from the embryos supplemented with the highest 25(OH)D3 level was recorded until 10 days of rearing, equaling final mean body weights (p>0.05) among experimental groups. The results of this study indicate the potential use of 25(OH)D3 as exogenous vitamin supplementation to embryos a few days before hatching without affecting neonate qualities and 10-d-old broiler chicken performance.
Palavras-chave: Broiler
In-ovo supplementation
Vitamin D
País: Brasil
Unidade acadêmica: Escola de Veterinária e Zootecnia - EVZ (RG)
Citação: GONZALES, E.; LEANDRO, N. S. M.; CRUZ, C. P.; STRINGHINI, J. H.; BRITO, A. B. In ovo supplementation of 25(oh)d3 to broiler embryos. Revista Brasileira de Ciência Avícola, Campinas, v. 15, n. 3, p. 199-202, July./Sept. 2013.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1590/S1516-635X2013000300005
Identificador do documento: 10.1590/S1516-635X2013000300005
Data de publicação: Set-2013
Aparece nas coleções:EVZ - Artigos publicados em periódicos

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