Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle

Detalhes bibliográficos
Autor(a) principal: Rohleder, Luciano Augusto
Data de Publicação: 2022
Outros Autores: Querino, Carlos Alexandre Santos, Alves, Péricles Vale, Querino, Juliane Kayse, Pedreira Junior, Altemar Lopes, Vaz, Marcos André Braz
Tipo de documento: Artigo
Idioma: por
eng
Título da fonte: Ciência animal brasileira (Online)
Texto Completo: https://revistas.ufg.br/vet/article/view/71625
Resumo: Environmental thermal comfort provides higher efficiency in the exploitation of dairy farming, as the responses of animals to the environment are decisive in the activity’s success. This study aimed to evaluate heat stress in dairy cows in the municipality of Humaitá, located in the south of the Amazonas State (AM), Brazil. Air temperature (TA) and relative humidity (RH) data were used to calculate the temperature humidity index (THI) in the dry (August 2020) and rainy seasons (January 2021). The August data were collected at the automatic weather station belonging to the National Institute of Meteorology. The January data were collected by a Hobo® U23-001 thermo-hygrometer installed at Fazenda Nossa Senhora Aparecida. The hourly and monthly means of the data were calculated and, subsequently, boxplots were plotted. TA and RH were 0.65 °C and 0.64% below the provisional climatological normal (PCN), respectively, for August, while January presented 0.77 °C and 3.61% above the PCN, respectively. THI values ranged from 56.25 (comfortable) to 84.68 (emergency) in August and 74.15 (comfortable) to 84.07 (emergency) in January. The maximum THI was observed in August, as well as the largest range. The results allow inferring that heat stress in dairy cows in the municipality of Humaitá-AM presents a state of alert even for cross-breed animals. Thus, the use of shading in pastures is suggested to minimize the effect of heat stress on the productive performance of the animals.Keywords: Cattle farming; animal stress; dairy production.
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spelling Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattleAvaliação de parâmetros ambientais em uma microrregião no sul do estado do Amazonas e suas relações com estresse térmico de bovinos leiteirosEnvironmental thermal comfort provides higher efficiency in the exploitation of dairy farming, as the responses of animals to the environment are decisive in the activity’s success. This study aimed to evaluate heat stress in dairy cows in the municipality of Humaitá, located in the south of the Amazonas State (AM), Brazil. Air temperature (TA) and relative humidity (RH) data were used to calculate the temperature humidity index (THI) in the dry (August 2020) and rainy seasons (January 2021). The August data were collected at the automatic weather station belonging to the National Institute of Meteorology. The January data were collected by a Hobo® U23-001 thermo-hygrometer installed at Fazenda Nossa Senhora Aparecida. The hourly and monthly means of the data were calculated and, subsequently, boxplots were plotted. TA and RH were 0.65 °C and 0.64% below the provisional climatological normal (PCN), respectively, for August, while January presented 0.77 °C and 3.61% above the PCN, respectively. THI values ranged from 56.25 (comfortable) to 84.68 (emergency) in August and 74.15 (comfortable) to 84.07 (emergency) in January. The maximum THI was observed in August, as well as the largest range. The results allow inferring that heat stress in dairy cows in the municipality of Humaitá-AM presents a state of alert even for cross-breed animals. Thus, the use of shading in pastures is suggested to minimize the effect of heat stress on the productive performance of the animals.Keywords: Cattle farming; animal stress; dairy production.O conforto térmico ambiental proporciona uma maior eficiência na exploração da pecuária leiteira, pois as respostas do animal ao ambiente são determinantes no sucesso da atividade. O objetivo deste trabalho foi avaliar o estresse térmico em vacas leiteiras no município de Humaitá, localizado no sul do estado do Amazonas (AM), Brasil. Foram utilizados dados de temperatura do ar (TA) e umidade relativa do ar (UR) para cálculo do Índice de Temperatura e Umidade (ITU) na estação seca (agosto de 2020) e na estação chuvosa (janeiro de 2021). Para o mês de agosto os dados foram coletados na estação meteorológica automática pertencente ao Instituto Nacional de Meteorologia. Em janeiro os dados foram coletados com o Termo-higrômetro (Hobo®, modelo U23-001) instalado na Fazenda Nossa Senhora Aparecida. As médias horárias e mensais dos dados foram feitas e, posteriormente, plotados gráficos boxplots. Os dados coletados para os meses do estudo apresentaram a TA e UR para o mês de agosto 0,65ºC e 0,64% abaixo da Normal Climatológica Provisória (NCP), respectivamente. Por outro lado, janeiro apresentou 0,77ºC e 3,61% acima da NCP, respectivamente. Os ITUs variaram entre 56,25 (confortável) e 84,68 (emergência), em agosto e de 74,15 (confortável) a 84,07 (emergência) em janeiro. O máximo ITU foi observado em agosto, bem como a maior amplitude. Baseados nos resultados encontrados pode-se aferir que o estresse térmico em vacas leiteiras no município de Humaitá-AM apresenta estado de alerta, mesmo para animais de raças cruzadas. Assim, sugere-se o uso de sombreamento nas pastagens para minimizar o efeito do estresse térmico no desempenho produtivo destes animais.Palavras-chave: Bovinocultura; Estresse Animal; Produção leiteira.Universidade Federal de Goiás2022-06-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://revistas.ufg.br/vet/article/view/71625Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 23 (2022): Continuous publicationCiência Animal Brasileira / Brazilian Animal Science; v. 23 (2022): Publicação contínua1809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporenghttps://revistas.ufg.br/vet/article/view/71625/38422https://revistas.ufg.br/vet/article/view/71625/38572https://revistas.ufg.br/vet/article/view/71625/38423https://revistas.ufg.br/vet/article/view/71625/38573Copyright (c) 2022 Ciência Animal Brasileira / Brazilian Animal Sciencehttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessRohleder, Luciano AugustoQuerino, Carlos Alexandre Santos Alves, Péricles Vale Querino, Juliane Kayse Pedreira Junior, Altemar Lopes Vaz, Marcos André Braz2023-03-23T18:43:54Zoai:ojs.revistas.ufg.br:article/71625Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:56:29.797271Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
Avaliação de parâmetros ambientais em uma microrregião no sul do estado do Amazonas e suas relações com estresse térmico de bovinos leiteiros
title Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
spellingShingle Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
Rohleder, Luciano Augusto
title_short Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
title_full Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
title_fullStr Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
title_full_unstemmed Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
title_sort Evaluation of environmental parameters in a microregion in southern Amazonas State, Brazil, and their relationship with heat stress in dairy cattle
author Rohleder, Luciano Augusto
author_facet Rohleder, Luciano Augusto
Querino, Carlos Alexandre Santos
Alves, Péricles Vale
Querino, Juliane Kayse
Pedreira Junior, Altemar Lopes
Vaz, Marcos André Braz
author_role author
author2 Querino, Carlos Alexandre Santos
Alves, Péricles Vale
Querino, Juliane Kayse
Pedreira Junior, Altemar Lopes
Vaz, Marcos André Braz
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Rohleder, Luciano Augusto
Querino, Carlos Alexandre Santos
Alves, Péricles Vale
Querino, Juliane Kayse
Pedreira Junior, Altemar Lopes
Vaz, Marcos André Braz
description Environmental thermal comfort provides higher efficiency in the exploitation of dairy farming, as the responses of animals to the environment are decisive in the activity’s success. This study aimed to evaluate heat stress in dairy cows in the municipality of Humaitá, located in the south of the Amazonas State (AM), Brazil. Air temperature (TA) and relative humidity (RH) data were used to calculate the temperature humidity index (THI) in the dry (August 2020) and rainy seasons (January 2021). The August data were collected at the automatic weather station belonging to the National Institute of Meteorology. The January data were collected by a Hobo® U23-001 thermo-hygrometer installed at Fazenda Nossa Senhora Aparecida. The hourly and monthly means of the data were calculated and, subsequently, boxplots were plotted. TA and RH were 0.65 °C and 0.64% below the provisional climatological normal (PCN), respectively, for August, while January presented 0.77 °C and 3.61% above the PCN, respectively. THI values ranged from 56.25 (comfortable) to 84.68 (emergency) in August and 74.15 (comfortable) to 84.07 (emergency) in January. The maximum THI was observed in August, as well as the largest range. The results allow inferring that heat stress in dairy cows in the municipality of Humaitá-AM presents a state of alert even for cross-breed animals. Thus, the use of shading in pastures is suggested to minimize the effect of heat stress on the productive performance of the animals.Keywords: Cattle farming; animal stress; dairy production.
publishDate 2022
dc.date.none.fl_str_mv 2022-06-13
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://revistas.ufg.br/vet/article/view/71625
url https://revistas.ufg.br/vet/article/view/71625
dc.language.iso.fl_str_mv por
eng
language por
eng
dc.relation.none.fl_str_mv https://revistas.ufg.br/vet/article/view/71625/38422
https://revistas.ufg.br/vet/article/view/71625/38572
https://revistas.ufg.br/vet/article/view/71625/38423
https://revistas.ufg.br/vet/article/view/71625/38573
dc.rights.driver.fl_str_mv Copyright (c) 2022 Ciência Animal Brasileira / Brazilian Animal Science
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 Ciência Animal Brasileira / Brazilian Animal Science
http://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Goiás
publisher.none.fl_str_mv Universidade Federal de Goiás
dc.source.none.fl_str_mv Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 23 (2022): Continuous publication
Ciência Animal Brasileira / Brazilian Animal Science; v. 23 (2022): Publicação contínua
1809-6891
1518-2797
reponame:Ciência animal brasileira (Online)
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institution UFG
reponame_str Ciência animal brasileira (Online)
collection Ciência animal brasileira (Online)
repository.name.fl_str_mv Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)
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