Impact of exposure to cold on layer production Report as inadecuate




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GA Felix ; ICL Almeida Paz ; IA Nääs ; GM Souza ; FR Caldara ; RG Garcia ;Revista Brasileira de Ciência Avícola 2012, 14 3

Author: FMS Alves

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Revista Brasileira de Ciência Avícola ISSN: 1516-635X revista@facta.org.br Fundação APINCO de Ciência e Tecnologia Avícolas Brasil Alves, FMS; Felix, GA; Almeida Paz, ICL; Nääs, IA; Souza, GM; Caldara, FR; Garcia, RG Impact of Exposure to Cold on Layer Production Revista Brasileira de Ciência Avícola, vol.
14, núm.
3, julio-septiembre, 2012, p.
223 Fundação APINCO de Ciência e Tecnologia Avícolas Campinas, SP, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=179724984010 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Brazilian Journal of Poultry Science Revista Brasileira de Ciência Avícola Impact of Exposure to Cold on Layer Production ISSN 1516-635X Jul - Sept 2012- v.14 - n.3 - 159-232 Author(s) Alves FMS Felix GA Almeida Paz ICL Nääs IA Souza GM Caldara FR Garcia RG ABSTRACT Infrared thermographic images were used to evaluate the effect of the exposure of layers to cold.
In this trial, 540 Isa Brown® layers with an average age of 69 weeks were housed in a conventional layer house typically used in Brazil during a period of cold environmental temperatures.
Environmental and heat-transference data were recorded between July 13-16, 2010.
It was verified that layers under cold stress conditions lost four times more energy that the recommendations trying to maintain their body temperature.
Due to their reduced feed intake capacity, hens are not capable of increasing the availability of the metabolic energy required to maintain their body temperature and egg production, consequently resulting in economic losses. INTRODUCTION Mail Adress E-mail: francielenmaria@yahoo.com.br Faculdade de Ciências Agrárias Curso de Zootecnia Universidade Federal da Grande Dourados Keywords Infrared ima...





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