Bioclimatic indices, mathematical modeling and statistical indices for the evaluation of models used to estimate animal thermal comfort
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
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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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 |