Evaluation of thermal stress indexes for dairy cows in tropical regions

Detalhes bibliográficos
Autor(a) principal: Silva,Roberto Gomes da
Data de Publicação: 2007
Outros Autores: Morais,Débora Andréa Evangelista Façanha, Guilhermino,Magda Maria
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zootecnia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000500028
Resumo: Data from 359 Holstein and 54 Jersey cows (total of 1359 observations) collected in commercial herds in the northeast of Brazil were used to evaluate six environmental stress indexes. The selection criterion was the correlation between the index value with the rectal temperature (RT) and the respiratory rate (RR) of cows. Both Temperature-Humidity Index (THI) and Black Globe-Humidity Index (BGHI) had the lowest correlations with animal RT and RR. The selected indexes were the Equivalent Temperature Index (r = 0.293 and 0.520 with RT and RR, respectively) and the Heat Load Index (0.286 and 0.542, respectively).
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spelling Evaluation of thermal stress indexes for dairy cows in tropical regionsdairy cattlethermal comfort indextropical environmentData from 359 Holstein and 54 Jersey cows (total of 1359 observations) collected in commercial herds in the northeast of Brazil were used to evaluate six environmental stress indexes. The selection criterion was the correlation between the index value with the rectal temperature (RT) and the respiratory rate (RR) of cows. Both Temperature-Humidity Index (THI) and Black Globe-Humidity Index (BGHI) had the lowest correlations with animal RT and RR. The selected indexes were the Equivalent Temperature Index (r = 0.293 and 0.520 with RT and RR, respectively) and the Heat Load Index (0.286 and 0.542, respectively).Sociedade Brasileira de Zootecnia2007-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000500028Revista Brasileira de Zootecnia v.36 n.4 suppl.0 2007reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982007000500028info:eu-repo/semantics/openAccessSilva,Roberto Gomes daMorais,Débora Andréa Evangelista FaçanhaGuilhermino,Magda Mariaeng2007-08-20T00:00:00Zoai:scielo:S1516-35982007000500028Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2007-08-20T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false
dc.title.none.fl_str_mv Evaluation of thermal stress indexes for dairy cows in tropical regions
title Evaluation of thermal stress indexes for dairy cows in tropical regions
spellingShingle Evaluation of thermal stress indexes for dairy cows in tropical regions
Silva,Roberto Gomes da
dairy cattle
thermal comfort index
tropical environment
title_short Evaluation of thermal stress indexes for dairy cows in tropical regions
title_full Evaluation of thermal stress indexes for dairy cows in tropical regions
title_fullStr Evaluation of thermal stress indexes for dairy cows in tropical regions
title_full_unstemmed Evaluation of thermal stress indexes for dairy cows in tropical regions
title_sort Evaluation of thermal stress indexes for dairy cows in tropical regions
author Silva,Roberto Gomes da
author_facet Silva,Roberto Gomes da
Morais,Débora Andréa Evangelista Façanha
Guilhermino,Magda Maria
author_role author
author2 Morais,Débora Andréa Evangelista Façanha
Guilhermino,Magda Maria
author2_role author
author
dc.contributor.author.fl_str_mv Silva,Roberto Gomes da
Morais,Débora Andréa Evangelista Façanha
Guilhermino,Magda Maria
dc.subject.por.fl_str_mv dairy cattle
thermal comfort index
tropical environment
topic dairy cattle
thermal comfort index
tropical environment
description Data from 359 Holstein and 54 Jersey cows (total of 1359 observations) collected in commercial herds in the northeast of Brazil were used to evaluate six environmental stress indexes. The selection criterion was the correlation between the index value with the rectal temperature (RT) and the respiratory rate (RR) of cows. Both Temperature-Humidity Index (THI) and Black Globe-Humidity Index (BGHI) had the lowest correlations with animal RT and RR. The selected indexes were the Equivalent Temperature Index (r = 0.293 and 0.520 with RT and RR, respectively) and the Heat Load Index (0.286 and 0.542, respectively).
publishDate 2007
dc.date.none.fl_str_mv 2007-08-01
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=S1516-35982007000500028
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000500028
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-35982007000500028
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 Sociedade Brasileira de Zootecnia
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
dc.source.none.fl_str_mv Revista Brasileira de Zootecnia v.36 n.4 suppl.0 2007
reponame:Revista Brasileira de Zootecnia (Online)
instname:Sociedade Brasileira de Zootecnia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zootecnia (SBZ)
instacron_str SBZ
institution SBZ
reponame_str Revista Brasileira de Zootecnia (Online)
collection Revista Brasileira de Zootecnia (Online)
repository.name.fl_str_mv Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)
repository.mail.fl_str_mv ||bz@sbz.org.br|| secretariarbz@sbz.org.br
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