Effects of inverting the position of layers eggs during storage on hatchery performance parameters

Revista Brasileira de Ciência Avícola

Jcs De Lima¹  Pl Silva¹  Lr Coelho¹  Ms Borges¹  Ag De Freitas¹  Bb Fonseca¹ 

[1] ,Universidade Federal de Uberlândia Curso de Pós Graduação em Ciências Aviárias

关键词: Storage;    layer breeders;    hatchling weight;    egg position;    hatchery performance;   

DOI  :  10.1590/S1516-635X2012000400003

来源: SciELO

【 摘 要 】

Storing hatchable eggs is a common practice in commercial hatcheries. However, storage time may negative effects on several performance parameters. An experiment was carried out to evaluate inverting egg position during storage of eggs laid by young and old layer breeders. Fertile eggs of 32 and 58-week-old breeders were stored for seven, 14, and 21 days at 18ºC ± 2ºC and 80% ± 10% relative humidity (RU). The following parameters were evaluated: egg weight loss, hatchability and hatchling weight, and embryodiagnosis results. Eggs stored with the small end up lost less weight during storage compared with the control eggs. Storing eggs for 14 days with the small end up reduced early embryo mortality, improving hatchability. In addition, hatchling weight increased. These results show that the detrimental effects of long storage periods may be alleviated when eggs are stored with the small end up to 14 days of storage.

【 授权许可】

CC BY   
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