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Influence of egg pre-storage heating period and storage length on incubation results
Silva, FHA; Faria, DE; Torres, KAA; Faria Filho, DE; Coelho, AAD; Savino, VJM.
Affiliation
  • Silva, FHA; Universidade de São Paulo Faculdade de Zootecnia e Engenharia de Alimentos Departamento de Zootecnia.
  • Faria, DE; Universidade de São Paulo Faculdade de Zootecnia e Engenharia de Alimentos Departamento de Zootecnia.
  • Torres, KAA; Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Morfologia e Fisiologia Animal.
  • Faria Filho, DE; Universidade Federal de Minas Gerais Núcleo de Ciências Agrárias Departamento de Zootecnia.
  • Coelho, AAD; Universidade de Sao Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Genética.
  • Savino, VJM; Universidade de Sao Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Genética.
Article in En | VETINDEX | ID: vti-717818
Responsible library: BR68.1
ABSTRACT
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.
Key words
Full text: 1 Database: VETINDEX Language: En Journal: R. bras. Ci. avíc. / Rev. bras. ciênc. avic Year: 2008 Document type: Article
Full text: 1 Database: VETINDEX Language: En Journal: R. bras. Ci. avíc. / Rev. bras. ciênc. avic Year: 2008 Document type: Article