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Provedor de dados:  89
País:  Brazil
Título:  Influence of egg pre-storage heating period and storage length on incubation results
Autores:  Silva,FHA
Faria,DE
Torres,KAA
Faria Filho,DE
Coelho,AAD
Savino,VJM
Data:  2008-03-01
Ano:  2008
Palavras-chave:  Broiler breeders
Egg weight loss
Embryo development
Embryo mortality
Hatch
Resumo:  This experiment aimed at evaluating the influence of different heating times of settable eggs of Cobb 500® broiler breeders before submitting them to different storage periods on egg weight loss, embryo mortality, and hatchability. A total number of 1,980 eggs were distributed in a completely randomized experimental design with a 3 x 3 factorial arrangement, comprising nine treatments with 22 replicates of 10 eggs each. The following factors were analyzed: pre-storage heating periods (0, 6, 12 hours at 36.92°C) and storage periods (4, 9, 14 days at 12.06°C). After storage, eggs were incubated under usual conditions, and were transferred to the hatcher at 442 hours of incubation. Eggs were weighed before heating, incubation, and transference to determine weight loss. Partial hatchability was determined at 480 hours, and total hatchability at 498 hours of incubation. Embryo mortality was determined in non-hatched eggs. It was concluded that heating eggs for six hour before storage improves incubation results as it decreases incubation length and late embryo mortality, therefore its use can be indicated in commercial operations. Storing eggs for 14 days and pre-heating for 14 days and pre-heating for 12 hours severely impair incubation results, and therefore are not recommended.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100003
Editor:  Fundação APINCO de Ciência e Tecnologia Avícolas
Relação:  10.1590/S1516-635X2008000100003
Formato:  text/html
Fonte:  Brazilian Journal of Poultry Science v.10 n.1 2008
Direitos:  info:eu-repo/semantics/openAccess
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