Repositório Digital

A- A A+

Hatching distribution and embryo mortality of eggs laid by broiler breeders of different ages

.

Hatching distribution and embryo mortality of eggs laid by broiler breeders of different ages

Mostrar registro completo

Estatísticas

Título Hatching distribution and embryo mortality of eggs laid by broiler breeders of different ages
Autor Almeida, J.G.
Vieira, Sérgio Luiz
Reis, R. N.
Berres, Josemar
Barros, Rafael de
Ferreira, Andre Klein
Furtado, Fúlvio Vinícius Foch
Abstract This study investigated the hatching distribution of eggs from broiler breeders of different ages in distinct periods of incubation. Eggs were incubated in a single-stage experimental incubator. A number of 3.510 eggs were distributed into 3 treatments with 13 replicates of 90 eggs each. Treatments corresponded to breeder age: young (34 weeks), intermediate-age (44 weeks) and old (72 weeks) breeders. Eggs were transferred to the hatcher at 432 incubation hours, hatching was first checked at 449 hours, after which the number of hatched chicks was counted every 6 hours up to 515 incubation hours. After each count, hatched chicks were removed from the hatcher. Data were submitted to analysis of variance using measures repeated. A significant interaction between breeder age and incubation time was found. The total period required to hatch all incubated fertile eggs was not influenced by breeder age, which, however, affected hatching distribution. Eggs from old breeders hatched later as compared to young and intermediate-age breeders. More than 71% of the eggs had already hatched at 485 incubation hours, and 94% at 491 hours. Eggs laid by old breeders presented higher infertility and total embryo mortality, resulting in lower hatching percentage.
Contido em Revista brasileira de ciência avícola= Brazilian journal of poultry science. Campinas, SP. Vol. 10, n. 2 (abr./jun. 2008), p. 89-96
Assunto Frango de corte
Incubação
Reprodução animal
[en] Broiler chicks
[en] Embryo mortality
[en] Incubation
[en] Post-hatching management
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/20675
Arquivos Descrição Formato
000662016.pdf (114.1Kb) Texto completo Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.