Impact of exposure to cold on layer production
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Poultry Science (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300010 |
Resumo: | 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. |
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Brazilian Journal of Poultry Science (Online) |
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Impact of exposure to cold on layer productionInfrared imagehousing environmentheat exchangeeconomic evaluationegg productionInfrared 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.Fundacao de Apoio a Ciência e Tecnologia Avicolas2012-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300010Brazilian Journal of Poultry Science v.14 n.3 2012reponame:Brazilian Journal of Poultry Science (Online)instname:Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)instacron:FACTA10.1590/S1516-635X2012000300010info:eu-repo/semantics/openAccessAlves,FMSFelix,GAAlmeida Paz,ICLNääs,IASouza,GMCaldara,FRGarcia,RGeng2012-12-03T00:00:00Zoai:scielo:S1516-635X2012000300010Revistahttp://www.scielo.br/rbcahttps://old.scielo.br/oai/scielo-oai.php||rvfacta@terra.com.br1806-90611516-635Xopendoar:2012-12-03T00:00Brazilian Journal of Poultry Science (Online) - Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)false |
dc.title.none.fl_str_mv |
Impact of exposure to cold on layer production |
title |
Impact of exposure to cold on layer production |
spellingShingle |
Impact of exposure to cold on layer production Alves,FMS Infrared image housing environment heat exchange economic evaluation egg production |
title_short |
Impact of exposure to cold on layer production |
title_full |
Impact of exposure to cold on layer production |
title_fullStr |
Impact of exposure to cold on layer production |
title_full_unstemmed |
Impact of exposure to cold on layer production |
title_sort |
Impact of exposure to cold on layer production |
author |
Alves,FMS |
author_facet |
Alves,FMS Felix,GA Almeida Paz,ICL Nääs,IA Souza,GM Caldara,FR Garcia,RG |
author_role |
author |
author2 |
Felix,GA Almeida Paz,ICL Nääs,IA Souza,GM Caldara,FR Garcia,RG |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Alves,FMS Felix,GA Almeida Paz,ICL Nääs,IA Souza,GM Caldara,FR Garcia,RG |
dc.subject.por.fl_str_mv |
Infrared image housing environment heat exchange economic evaluation egg production |
topic |
Infrared image housing environment heat exchange economic evaluation egg production |
description |
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. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-635X2012000300010 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Fundacao de Apoio a Ciência e Tecnologia Avicolas |
publisher.none.fl_str_mv |
Fundacao de Apoio a Ciência e Tecnologia Avicolas |
dc.source.none.fl_str_mv |
Brazilian Journal of Poultry Science v.14 n.3 2012 reponame:Brazilian Journal of Poultry Science (Online) instname:Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) instacron:FACTA |
instname_str |
Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) |
instacron_str |
FACTA |
institution |
FACTA |
reponame_str |
Brazilian Journal of Poultry Science (Online) |
collection |
Brazilian Journal of Poultry Science (Online) |
repository.name.fl_str_mv |
Brazilian Journal of Poultry Science (Online) - Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) |
repository.mail.fl_str_mv |
||rvfacta@terra.com.br |
_version_ |
1754122512219766784 |