Cloacal and surface temperatures of broilers subject to thermal stress
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Publication Date: | 2017 |
Other Authors: | , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UFLA |
Download full: | http://repositorio.ufla.br/jspui/handle/1/29873 |
Summary: | The cloacal and surface temperatures are important physiological parameters to quantify the thermal comfort of animals, its variations may occur as a function of thermal variables. In this context, the goal of the present study was to evaluate the cloacal (tclo) and surface (tsur) temperatures of Cobb 500® broilers, in the second week of life, subjected to different air dry-bulb temperature (24, 27, 30 and 33 °C) and stress durations (1, 2, 3 and 4 days). The experiment was carried out in four climate-controlled wind tunnels. Air relative humidity and air velocity were set at 60% and 0.2 m s-1, respectively. The tclo and tsur were measured daily through digital thermometer and thermographic camera, respectively. Analysis of variance and Scott Knott mean test at 5% probability were applied to the data. The results indicate that the stress by low air temperature (24 and 27 °C) resulted decreased of tclo and tsur (p<0.05, Scott-Knott test). When subjected to high air temperature stress (33 °C), there was no significant difference (p>0.05, Scott-Knott test) compared to the control treatment (30 °C). Acclimation of broilers to thermal stress occurred from the second day of stress. |
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Cloacal and surface temperatures of broilers subject to thermal stressAnimal environmentAvicultureThermal comfortThermographic imagePhysiologic parametersThe cloacal and surface temperatures are important physiological parameters to quantify the thermal comfort of animals, its variations may occur as a function of thermal variables. In this context, the goal of the present study was to evaluate the cloacal (tclo) and surface (tsur) temperatures of Cobb 500® broilers, in the second week of life, subjected to different air dry-bulb temperature (24, 27, 30 and 33 °C) and stress durations (1, 2, 3 and 4 days). The experiment was carried out in four climate-controlled wind tunnels. Air relative humidity and air velocity were set at 60% and 0.2 m s-1, respectively. The tclo and tsur were measured daily through digital thermometer and thermographic camera, respectively. Analysis of variance and Scott Knott mean test at 5% probability were applied to the data. The results indicate that the stress by low air temperature (24 and 27 °C) resulted decreased of tclo and tsur (p<0.05, Scott-Knott test). When subjected to high air temperature stress (33 °C), there was no significant difference (p>0.05, Scott-Knott test) compared to the control treatment (30 °C). Acclimation of broilers to thermal stress occurred from the second day of stress.Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP)Faculdade de Ciências Agrárias e Veterinárias (FCAV)2018-08-02T19:30:41Z2018-08-02T19:30:41Z2017-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfABREU, L. H. P. et al. Cloacal and surface temperatures of broilers subject to thermal stress. Engenharia Agrícola, Jaboticabal, v. 37, n. 5, p. 877-886, Sept./Oct. 2017.http://repositorio.ufla.br/jspui/handle/1/29873Engenharia Agrícolareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessAbreu, Lucas H. P.Yanagi Junior, TadayukiCampos, Alessandro T.Bahuti, MarceloFassani, Édison J.eng2023-05-02T18:16:21Zoai:localhost:1/29873Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-02T18:16:21Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Cloacal and surface temperatures of broilers subject to thermal stress |
title |
Cloacal and surface temperatures of broilers subject to thermal stress |
spellingShingle |
Cloacal and surface temperatures of broilers subject to thermal stress Abreu, Lucas H. P. Animal environment Aviculture Thermal comfort Thermographic image Physiologic parameters |
title_short |
Cloacal and surface temperatures of broilers subject to thermal stress |
title_full |
Cloacal and surface temperatures of broilers subject to thermal stress |
title_fullStr |
Cloacal and surface temperatures of broilers subject to thermal stress |
title_full_unstemmed |
Cloacal and surface temperatures of broilers subject to thermal stress |
title_sort |
Cloacal and surface temperatures of broilers subject to thermal stress |
author |
Abreu, Lucas H. P. |
author_facet |
Abreu, Lucas H. P. Yanagi Junior, Tadayuki Campos, Alessandro T. Bahuti, Marcelo Fassani, Édison J. |
author_role |
author |
author2 |
Yanagi Junior, Tadayuki Campos, Alessandro T. Bahuti, Marcelo Fassani, Édison J. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Abreu, Lucas H. P. Yanagi Junior, Tadayuki Campos, Alessandro T. Bahuti, Marcelo Fassani, Édison J. |
dc.subject.por.fl_str_mv |
Animal environment Aviculture Thermal comfort Thermographic image Physiologic parameters |
topic |
Animal environment Aviculture Thermal comfort Thermographic image Physiologic parameters |
description |
The cloacal and surface temperatures are important physiological parameters to quantify the thermal comfort of animals, its variations may occur as a function of thermal variables. In this context, the goal of the present study was to evaluate the cloacal (tclo) and surface (tsur) temperatures of Cobb 500® broilers, in the second week of life, subjected to different air dry-bulb temperature (24, 27, 30 and 33 °C) and stress durations (1, 2, 3 and 4 days). The experiment was carried out in four climate-controlled wind tunnels. Air relative humidity and air velocity were set at 60% and 0.2 m s-1, respectively. The tclo and tsur were measured daily through digital thermometer and thermographic camera, respectively. Analysis of variance and Scott Knott mean test at 5% probability were applied to the data. The results indicate that the stress by low air temperature (24 and 27 °C) resulted decreased of tclo and tsur (p<0.05, Scott-Knott test). When subjected to high air temperature stress (33 °C), there was no significant difference (p>0.05, Scott-Knott test) compared to the control treatment (30 °C). Acclimation of broilers to thermal stress occurred from the second day of stress. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10 2018-08-02T19:30:41Z 2018-08-02T19:30:41Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
ABREU, L. H. P. et al. Cloacal and surface temperatures of broilers subject to thermal stress. Engenharia Agrícola, Jaboticabal, v. 37, n. 5, p. 877-886, Sept./Oct. 2017. http://repositorio.ufla.br/jspui/handle/1/29873 |
identifier_str_mv |
ABREU, L. H. P. et al. Cloacal and surface temperatures of broilers subject to thermal stress. Engenharia Agrícola, Jaboticabal, v. 37, n. 5, p. 877-886, Sept./Oct. 2017. |
url |
http://repositorio.ufla.br/jspui/handle/1/29873 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://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 |
Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) Faculdade de Ciências Agrárias e Veterinárias (FCAV) |
publisher.none.fl_str_mv |
Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) Faculdade de Ciências Agrárias e Veterinárias (FCAV) |
dc.source.none.fl_str_mv |
Engenharia Agrícola reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1784550159822094336 |