Thermal stimulation of Ross®-lineage embryos on a commercial scale

Ciência Rural

Nääs, Irenilza de Alencar¹  Souza, Lenise Inácio de³  Flores, Fernanda¹  Garcia, Rodrigo Garófallo² 

[1] Universidade Estadual de Campinas, Campinas, Brazil;Universidade Federal da Grande Dourados, Dourados, Brazil;Pas Reform do Brasil - Tecnologias de Incubação, Rio Claro, Brasil

关键词: commercial incubation;    embryonic development;    hatching;    thermal conditioning;   

DOI  :  10.1590/0103-8478cr20151310

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:Artificial incubation is an essential process to obtain healthy birds with good performance; nevertheless, it requires sustained improvement. During this process, incubation temperature is considered a critical factor, which has been studied. The objective of this study was to evaluate the development of Ross(r) embryos after hot and cold thermal stimulation. To this end, temperatures 1.39ºC above the standard temperature and a temperature fixed at 36.00ºC that varied 1.00 to 0.30ºC below the standard temperature were applied during the final embryonic development period (days 14 to 18) for three hours, on a commercial scale. Results revealed that hot and cold thermal stimulations did not cause embryo mortality; the hatching and chick quality index were maintained and even increased. Therefore, we believe that thermal stimulation has the potential to improve hatchery index, and thus grange performance; however, adjustments are needed, varying according to each individual hatchery, before it can used as a protocol.

【 授权许可】

Unknown