Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort

Detalhes bibliográficos
Autor(a) principal: Santos, Girlene Cordeiro de Lima
Data de Publicação: 2021
Outros Autores: Cabral, Ana Maria Duarte
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/13328
Resumo: In judging the comfort or discomfort of animals, bioclimatic indices are commonly used. The most used indexes in this type of evaluation are: black globe temperature and humidity index (BGHI), temperature and humidity index (THI), and radiant heat load (RHL), because they are related to physiological and behavioral indicators of the animals. The THI does not absorb the effects of the radiation heat load. For this reason, BGHI and RHL are more suitable for extensive or even confined rearing systems, with high heat load, since they depend on the black globe temperature (BGT), a measure capable of inferring on the homeothermia of the animals. However, most Brazilian weather stations do not have the BGT, which makes it difficult to estimate the amount of heat load to which the animals are exposed. Therefore, the use of meteorological variables to develop equations for estimating the BGT is of great importance in planning actions in different animal production systems. Likewise, the statistical indexes used to evaluate the performance of these estimation equations are essential for their validation. Therefore, this study aimed to perform a review to elucidate bioclimatic indexes, mathematical modeling and statistical indexes for the evaluation of models used to estimate animal thermal comfort.
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spelling Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfortÍndices bioclimáticos, modelización matemática e índices estadísticos para la evaluación de los modelos utilizados en la estimación del confort térmico animalÍndices bioclimáticos, modelagem matemática e índices estatísticos para avaliação de modelos utilizados na estimativa do conforto térmico animalEstresse térmico animalITGUTGN. Animal heat stressBGHIBGT.Estrés térmico animalWBGTTGN.In judging the comfort or discomfort of animals, bioclimatic indices are commonly used. The most used indexes in this type of evaluation are: black globe temperature and humidity index (BGHI), temperature and humidity index (THI), and radiant heat load (RHL), because they are related to physiological and behavioral indicators of the animals. The THI does not absorb the effects of the radiation heat load. For this reason, BGHI and RHL are more suitable for extensive or even confined rearing systems, with high heat load, since they depend on the black globe temperature (BGT), a measure capable of inferring on the homeothermia of the animals. However, most Brazilian weather stations do not have the BGT, which makes it difficult to estimate the amount of heat load to which the animals are exposed. Therefore, the use of meteorological variables to develop equations for estimating the BGT is of great importance in planning actions in different animal production systems. Likewise, the statistical indexes used to evaluate the performance of these estimation equations are essential for their validation. Therefore, this study aimed to perform a review to elucidate bioclimatic indexes, mathematical modeling and statistical indexes for the evaluation of models used to estimate animal thermal comfort.Los índices bioclimáticos se utilizan habitualmente para evaluar el confort o la incomodidad de los animales. Los índices más utilizados en este tipo de evaluación son: el índice de temperatura y humedad del globo negro (WBGT), el índice de temperatura y humedad (ITH) y la carga de calor radiante (CCR), porque están relacionados con indicadores fisiológicos y de comportamiento de los animales. La ITH no absorbe los efectos de la carga térmica por radiación. Por esta razón, la WBGT y la CCR son más adecuadas para los sistemas de cría extensivos o incluso confinados, con alta carga térmica, ya que dependen de la temperatura del globo negro (TGN), una medida capaz de inferir sobre la homeotermia de los animales. Sin embargo, la mayoría de las estaciones meteorológicas brasileñas no disponen del TGN, lo que dificulta la estimación de la cantidad de carga térmica a la que están expuestos los animales. Por lo tanto, el uso de variables meteorológicas para la elaboración de ecuaciones de estimación del TGN es de gran importancia en la planificación de acciones en diferentes sistemas de producción animal. Asimismo, los índices estadísticos empleados en la evaluación del rendimiento de estas ecuaciones de estimación son fundamentales para su validación. Por lo tanto, se realizó una revisión de los índices bioclimáticos, la modelización matemática y los índices estadísticos para la evaluación de los modelos utilizados en la estimación del confort térmico animal.No julgamento do conforto ou desconforto dos animais comumente são utilizados índices bioclimáticos. Os índices mais empregados nesse tipo de avaliação são: índice de temperatura do globo negro e umidade (ITGU), índice de temperatura e umidade (ITU), e carga térmica radiante (CTR), por possuírem relação com indicadores fisiológicos e comportamentais dos animais. O ITU, não absorve efeitos da carga térmica de radiação. Por esse motivo, o ITGU e CTR, são mais indicados para sistemas de criação extensiva ou mesmo confinado, com carga térmica elevada, uma vez que, dependem da temperatura do globo negro (TGN), medida capaz de inferir sobre a homeotérmica dos animais. Todavia, a maioria das estações meteorológicas brasileiras não dispõem da TGN, o que dificulta a estimativa da quantidade de carga térmica a qual os animais ficam expostos. Portanto, o uso de variáveis meteorológicas para a elaboração de equações de estimativa da TGN, é de grande importância em ações de planejamento em diferentes sistemas de produção animal. Igualmente, os índices estatísticos empregados na avaliação do desempenho dessas equações de estimativa, são fundamentais para a sua validação. Logo, objetivou-se realizar uma revisão para elucidação de índices bioclimáticos, modelagem matemática e índices estatísticos para avaliação de modelos utilizados na estimativa do conforto térmico animal.Research, Society and Development2021-03-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/1332810.33448/rsd-v10i3.13328Research, Society and Development; Vol. 10 No. 3; e20910313328Research, Society and Development; Vol. 10 Núm. 3; e20910313328Research, Society and Development; v. 10 n. 3; e209103133282525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/13328/11901Copyright (c) 2021 Girlene Cordeiro de Lima Santos; Ana Maria Duarte Cabralhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSantos, Girlene Cordeiro de LimaCabral, Ana Maria Duarte 2021-03-28T12:03:35Zoai:ojs.pkp.sfu.ca:article/13328Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:34:41.823795Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
Índices bioclimáticos, modelización matemática e índices estadísticos para la evaluación de los modelos utilizados en la estimación del confort térmico animal
Índices bioclimáticos, modelagem matemática e índices estatísticos para avaliação de modelos utilizados na estimativa do conforto térmico animal
title Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
spellingShingle Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
Santos, Girlene Cordeiro de Lima
Estresse térmico animal
ITGU
TGN.
Animal heat stress
BGHI
BGT.
Estrés térmico animal
WBGT
TGN.
title_short Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
title_full Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
title_fullStr Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
title_full_unstemmed Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
title_sort Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
author Santos, Girlene Cordeiro de Lima
author_facet Santos, Girlene Cordeiro de Lima
Cabral, Ana Maria Duarte
author_role author
author2 Cabral, Ana Maria Duarte
author2_role author
dc.contributor.author.fl_str_mv Santos, Girlene Cordeiro de Lima
Cabral, Ana Maria Duarte
dc.subject.por.fl_str_mv Estresse térmico animal
ITGU
TGN.
Animal heat stress
BGHI
BGT.
Estrés térmico animal
WBGT
TGN.
topic Estresse térmico animal
ITGU
TGN.
Animal heat stress
BGHI
BGT.
Estrés térmico animal
WBGT
TGN.
description In judging the comfort or discomfort of animals, bioclimatic indices are commonly used. The most used indexes in this type of evaluation are: black globe temperature and humidity index (BGHI), temperature and humidity index (THI), and radiant heat load (RHL), because they are related to physiological and behavioral indicators of the animals. The THI does not absorb the effects of the radiation heat load. For this reason, BGHI and RHL are more suitable for extensive or even confined rearing systems, with high heat load, since they depend on the black globe temperature (BGT), a measure capable of inferring on the homeothermia of the animals. However, most Brazilian weather stations do not have the BGT, which makes it difficult to estimate the amount of heat load to which the animals are exposed. Therefore, the use of meteorological variables to develop equations for estimating the BGT is of great importance in planning actions in different animal production systems. Likewise, the statistical indexes used to evaluate the performance of these estimation equations are essential for their validation. Therefore, this study aimed to perform a review to elucidate bioclimatic indexes, mathematical modeling and statistical indexes for the evaluation of models used to estimate animal thermal comfort.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-12
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/13328
10.33448/rsd-v10i3.13328
url https://rsdjournal.org/index.php/rsd/article/view/13328
identifier_str_mv 10.33448/rsd-v10i3.13328
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/13328/11901
dc.rights.driver.fl_str_mv Copyright (c) 2021 Girlene Cordeiro de Lima Santos; Ana Maria Duarte Cabral
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 Girlene Cordeiro de Lima Santos; Ana Maria Duarte Cabral
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 10 No. 3; e20910313328
Research, Society and Development; Vol. 10 Núm. 3; e20910313328
Research, Society and Development; v. 10 n. 3; e20910313328
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
_version_ 1797052817359241216

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