Data/hora: 12/06/2024 06:31:33

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	
Fonte: 	info:eu-repo/semantics/openAccess