Cargando…

Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon

In Brazil, the study on equine thermoregulation has not shown considerable advances, moreover, in the Amazon, this is a little explored aspect. This study aims to evaluate the thermoregulation of horses submitted to two methods of post-exercise cooling, in the climatic conditions of the Eastern Amaz...

Descripción completa

Detalles Bibliográficos
Autores principales: Lisboa, Bruna Rafaela Ferreira, da Silva, Jamile Andréa Rodrigues, da Silva, Welligton Conceição, Barbosa, Antônio Vinícius Corrêa, Silva, Lilian Kátia Ximenes, Lourenço-Júnior, José de Brito
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10149968/
https://www.ncbi.nlm.nih.gov/pubmed/37138916
http://dx.doi.org/10.3389/fvets.2023.1150763
_version_ 1785035262128029696
author Lisboa, Bruna Rafaela Ferreira
da Silva, Jamile Andréa Rodrigues
da Silva, Welligton Conceição
Barbosa, Antônio Vinícius Corrêa
Silva, Lilian Kátia Ximenes
Lourenço-Júnior, José de Brito
author_facet Lisboa, Bruna Rafaela Ferreira
da Silva, Jamile Andréa Rodrigues
da Silva, Welligton Conceição
Barbosa, Antônio Vinícius Corrêa
Silva, Lilian Kátia Ximenes
Lourenço-Júnior, José de Brito
author_sort Lisboa, Bruna Rafaela Ferreira
collection PubMed
description In Brazil, the study on equine thermoregulation has not shown considerable advances, moreover, in the Amazon, this is a little explored aspect. This study aims to evaluate the thermoregulation of horses submitted to two methods of post-exercise cooling, in the climatic conditions of the Eastern Amazon. The experiment was conducted at Centro Hipico, Ananindeua, Para, for 15 days. Ten male horses, castrated of the Brazilian breed, aged 13 years and with an average weight of 482.3 kg were used. Equestrianism, which was exercised with pre-established protocol in the arena and track, for 30 min. After the exercise, the animals were divided into two groups for application of the treatments, which were two cooling methods, such as a bath with water at room temperature (about 25°C) and a hiper cooling method (6–9°C). During the experimental period, air temperature (AT) and relative humidity (RH) data were recorded and the Temperature and Humidity Index (THI) was calculated. Data from the rectal temperature (RT), heart rate (HR), respiratory rate (RR) and Body surface temperature (BST) of the animals were also measured at three moments: before exercise, after exercise and after applying the cooling methods. The adaptability index used was the Benezra Thermal Comfort Index (BTCI). The BST was performed with the help of infrared thermograph, which were the left side of the neck, thorax, rump, and right side to the armpi, before the exercise, after the exercise and after applying the cooling methods. The statistical design was completely randomized. Analysis of variance was performed using the GLM Procedure of SAS 9.1.3. After the application of the cooling techniques in the animals, the AT and THI were higher and the highest RH values were found before the exercise (87.21%). The highest RT, RR, HR, BST, and BTCI values were observed after exercise. There was no significant dierence (P > 0.05) between cooling methods. There was a highly significant and positive correlation (P < 0.01) between all physiological variables (RT, RR, HR, and BST) and the Iberian Index with AT and THI and negative with RH (P < 0.01), thus demonstrating the influence of the environment on the thermoregulation of animals. It is concluded the evaluation of stress, welfare and thermoregulation of horses submitted to two methods of post-exercise cooling, in the climatic conditions of the Eastern Amazon, demonstrated that the studied cooling methods showed to reduce the rectal temperature, the respiratory rate, the heart rate and the body surface temperature with equal efficiency. However, in terms of practical ease of use, the room temperature water cooling method has proven to be more practical.
format Online
Article
Text
id pubmed-10149968
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-101499682023-05-02 Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon Lisboa, Bruna Rafaela Ferreira da Silva, Jamile Andréa Rodrigues da Silva, Welligton Conceição Barbosa, Antônio Vinícius Corrêa Silva, Lilian Kátia Ximenes Lourenço-Júnior, José de Brito Front Vet Sci Veterinary Science In Brazil, the study on equine thermoregulation has not shown considerable advances, moreover, in the Amazon, this is a little explored aspect. This study aims to evaluate the thermoregulation of horses submitted to two methods of post-exercise cooling, in the climatic conditions of the Eastern Amazon. The experiment was conducted at Centro Hipico, Ananindeua, Para, for 15 days. Ten male horses, castrated of the Brazilian breed, aged 13 years and with an average weight of 482.3 kg were used. Equestrianism, which was exercised with pre-established protocol in the arena and track, for 30 min. After the exercise, the animals were divided into two groups for application of the treatments, which were two cooling methods, such as a bath with water at room temperature (about 25°C) and a hiper cooling method (6–9°C). During the experimental period, air temperature (AT) and relative humidity (RH) data were recorded and the Temperature and Humidity Index (THI) was calculated. Data from the rectal temperature (RT), heart rate (HR), respiratory rate (RR) and Body surface temperature (BST) of the animals were also measured at three moments: before exercise, after exercise and after applying the cooling methods. The adaptability index used was the Benezra Thermal Comfort Index (BTCI). The BST was performed with the help of infrared thermograph, which were the left side of the neck, thorax, rump, and right side to the armpi, before the exercise, after the exercise and after applying the cooling methods. The statistical design was completely randomized. Analysis of variance was performed using the GLM Procedure of SAS 9.1.3. After the application of the cooling techniques in the animals, the AT and THI were higher and the highest RH values were found before the exercise (87.21%). The highest RT, RR, HR, BST, and BTCI values were observed after exercise. There was no significant dierence (P > 0.05) between cooling methods. There was a highly significant and positive correlation (P < 0.01) between all physiological variables (RT, RR, HR, and BST) and the Iberian Index with AT and THI and negative with RH (P < 0.01), thus demonstrating the influence of the environment on the thermoregulation of animals. It is concluded the evaluation of stress, welfare and thermoregulation of horses submitted to two methods of post-exercise cooling, in the climatic conditions of the Eastern Amazon, demonstrated that the studied cooling methods showed to reduce the rectal temperature, the respiratory rate, the heart rate and the body surface temperature with equal efficiency. However, in terms of practical ease of use, the room temperature water cooling method has proven to be more practical. Frontiers Media S.A. 2023-04-17 /pmc/articles/PMC10149968/ /pubmed/37138916 http://dx.doi.org/10.3389/fvets.2023.1150763 Text en Copyright © 2023 Lisboa, Silva, Silva, Barbosa, Silva and Lourenço-Júnior. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Veterinary Science
Lisboa, Bruna Rafaela Ferreira
da Silva, Jamile Andréa Rodrigues
da Silva, Welligton Conceição
Barbosa, Antônio Vinícius Corrêa
Silva, Lilian Kátia Ximenes
Lourenço-Júnior, José de Brito
Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon
title Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon
title_full Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon
title_fullStr Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon
title_full_unstemmed Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon
title_short Evaluation of thermoregulation of horses (Equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the Eastern Amazon
title_sort evaluation of thermoregulation of horses (equus caballus) submitted to two methods of post-exercise cooling, in hot and humid climate conditions, in the eastern amazon
topic Veterinary Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10149968/
https://www.ncbi.nlm.nih.gov/pubmed/37138916
http://dx.doi.org/10.3389/fvets.2023.1150763
work_keys_str_mv AT lisboabrunarafaelaferreira evaluationofthermoregulationofhorsesequuscaballussubmittedtotwomethodsofpostexercisecoolinginhotandhumidclimateconditionsintheeasternamazon
AT dasilvajamileandrearodrigues evaluationofthermoregulationofhorsesequuscaballussubmittedtotwomethodsofpostexercisecoolinginhotandhumidclimateconditionsintheeasternamazon
AT dasilvawelligtonconceicao evaluationofthermoregulationofhorsesequuscaballussubmittedtotwomethodsofpostexercisecoolinginhotandhumidclimateconditionsintheeasternamazon
AT barbosaantonioviniciuscorrea evaluationofthermoregulationofhorsesequuscaballussubmittedtotwomethodsofpostexercisecoolinginhotandhumidclimateconditionsintheeasternamazon
AT silvaliliankatiaximenes evaluationofthermoregulationofhorsesequuscaballussubmittedtotwomethodsofpostexercisecoolinginhotandhumidclimateconditionsintheeasternamazon
AT lourencojuniorjosedebrito evaluationofthermoregulationofhorsesequuscaballussubmittedtotwomethodsofpostexercisecoolinginhotandhumidclimateconditionsintheeasternamazon