Behavior of chicks subjected to thermal challenge

Detalhes bibliográficos
Autor(a) principal: Ferraz, Patrícia F. P.
Data de Publicação: 2014
Outros Autores: Yanagi Junior, Tadayuki, Alvarenga, Talita A. C., Reis, Gregory M., Campos, Alessandro T.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/45877
Resumo: In the first week of a chick life, broilers are very sensitive to different conditions outside their thermoneutral zone. Thus, the goal of this study was to evaluate the behaviors and productive responses of broilers subjected to conditions of thermal comfort or challenge at different intensities (27, 30, 33 and 36ºC) and durations (1, 2, 3 and 4 days starting on the second day of life). In the experiment, ten minutes of images from each hour of each treatment were analyzed to evaluate the key behaviors of the birds. Similar behavior at different dry-bulb air temperatures were identified by using Ward's method of cluster analysis. These behaviors were grouped by dendograms in which the similarity of these data was qualified. Feed intake, water intake and body mass of these animals were evaluated and used to support the observed behaviors. Thus, a similar huddling behavior was observed in the birds from the 2nd to the 5th day of life subjected to 27ºC and 30ºC, while at 30ºC and 33ºC the behavior of accessing feeders and drinkers was also similar. Chicks subjected to 33ºC presented the best performance, and at 30 and 36ºC showed intermediate development.
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spelling Behavior of chicks subjected to thermal challengeComportamento de pintinhos submetidos a estresse térmicoGrouping of dataDendogramBroilerProductive responsesAgrupamento de dadosDendogramaFrango de corteRespostas produtivasIn the first week of a chick life, broilers are very sensitive to different conditions outside their thermoneutral zone. Thus, the goal of this study was to evaluate the behaviors and productive responses of broilers subjected to conditions of thermal comfort or challenge at different intensities (27, 30, 33 and 36ºC) and durations (1, 2, 3 and 4 days starting on the second day of life). In the experiment, ten minutes of images from each hour of each treatment were analyzed to evaluate the key behaviors of the birds. Similar behavior at different dry-bulb air temperatures were identified by using Ward's method of cluster analysis. These behaviors were grouped by dendograms in which the similarity of these data was qualified. Feed intake, water intake and body mass of these animals were evaluated and used to support the observed behaviors. Thus, a similar huddling behavior was observed in the birds from the 2nd to the 5th day of life subjected to 27ºC and 30ºC, while at 30ºC and 33ºC the behavior of accessing feeders and drinkers was also similar. Chicks subjected to 33ºC presented the best performance, and at 30 and 36ºC showed intermediate development.Na primeira semana de vida, frangos de corte são muito sensíveis a condições diferentes de suas temperaturas de conforto. Dessa forma, objetiva-se com o presente trabalho avaliar o comportamento e as respostas produtivas de frangos de corte submetidos a condições de conforto e estresse térmico em diferentes intensidades (27; 30; 33 e 36ºC) e períodos de duração (1; 2; 3 e 4 dias a partir do 2º dia de vida). No experimento, diariamente, monitoraram-se dez minutos de imagens de cada hora, de cada tratamento, para a avaliação dos principais comportamentos das aves. Os comportamentos similares em diferentes temperaturas foram identificados usando o método de análise de cluster de Ward e foram agrupados por dendogramas em que se classificou a similaridade destes dados. O consumo de ração, consumo de água e massa corporal destes animais foram avaliados e usados para dar suporte aos comportamentos observados. Dessa forma, observou-se o comportamento similar das aves do 2º ao 5º dia de vida, submetidas a 27 e 30 ºC em permanecerem agrupadas e/ou isoladas, e a 30 e 33 ºC em permanecerem nos bebedouros e/ou comedouros. As aves submetidas a 33ºC apresentaram o melhor desempenho, e a 30 e 36ºC apresentaram desempenhos intermediários.Associação Brasileira de Engenharia Agrícola2020-12-15T20:10:18Z2020-12-15T20:10:18Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfFERRAZ, P. F. P. et al. Behavior of chicks subjected to thermal challenge. Engenharia Agrícola, Jaboticabal, v. 34, n. 6, p. 1039-1049, Nov./Dec. 2014. DOI: https://doi.org/10.1590/S0100-69162014000600002.http://repositorio.ufla.br/jspui/handle/1/45877Engenharia Agrícolareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessFerraz, Patrícia F. P.Yanagi Junior, TadayukiAlvarenga, Talita A. C.Reis, Gregory M.Campos, Alessandro T.eng2023-05-03T11:15:10Zoai:localhost:1/45877Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-03T11:15:10Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Behavior of chicks subjected to thermal challenge
Comportamento de pintinhos submetidos a estresse térmico
title Behavior of chicks subjected to thermal challenge
spellingShingle Behavior of chicks subjected to thermal challenge
Ferraz, Patrícia F. P.
Grouping of data
Dendogram
Broiler
Productive responses
Agrupamento de dados
Dendograma
Frango de corte
Respostas produtivas
title_short Behavior of chicks subjected to thermal challenge
title_full Behavior of chicks subjected to thermal challenge
title_fullStr Behavior of chicks subjected to thermal challenge
title_full_unstemmed Behavior of chicks subjected to thermal challenge
title_sort Behavior of chicks subjected to thermal challenge
author Ferraz, Patrícia F. P.
author_facet Ferraz, Patrícia F. P.
Yanagi Junior, Tadayuki
Alvarenga, Talita A. C.
Reis, Gregory M.
Campos, Alessandro T.
author_role author
author2 Yanagi Junior, Tadayuki
Alvarenga, Talita A. C.
Reis, Gregory M.
Campos, Alessandro T.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ferraz, Patrícia F. P.
Yanagi Junior, Tadayuki
Alvarenga, Talita A. C.
Reis, Gregory M.
Campos, Alessandro T.
dc.subject.por.fl_str_mv Grouping of data
Dendogram
Broiler
Productive responses
Agrupamento de dados
Dendograma
Frango de corte
Respostas produtivas
topic Grouping of data
Dendogram
Broiler
Productive responses
Agrupamento de dados
Dendograma
Frango de corte
Respostas produtivas
description In the first week of a chick life, broilers are very sensitive to different conditions outside their thermoneutral zone. Thus, the goal of this study was to evaluate the behaviors and productive responses of broilers subjected to conditions of thermal comfort or challenge at different intensities (27, 30, 33 and 36ºC) and durations (1, 2, 3 and 4 days starting on the second day of life). In the experiment, ten minutes of images from each hour of each treatment were analyzed to evaluate the key behaviors of the birds. Similar behavior at different dry-bulb air temperatures were identified by using Ward's method of cluster analysis. These behaviors were grouped by dendograms in which the similarity of these data was qualified. Feed intake, water intake and body mass of these animals were evaluated and used to support the observed behaviors. Thus, a similar huddling behavior was observed in the birds from the 2nd to the 5th day of life subjected to 27ºC and 30ºC, while at 30ºC and 33ºC the behavior of accessing feeders and drinkers was also similar. Chicks subjected to 33ºC presented the best performance, and at 30 and 36ºC showed intermediate development.
publishDate 2014
dc.date.none.fl_str_mv 2014
2020-12-15T20:10:18Z
2020-12-15T20:10:18Z
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 FERRAZ, P. F. P. et al. Behavior of chicks subjected to thermal challenge. Engenharia Agrícola, Jaboticabal, v. 34, n. 6, p. 1039-1049, Nov./Dec. 2014. DOI: https://doi.org/10.1590/S0100-69162014000600002.
http://repositorio.ufla.br/jspui/handle/1/45877
identifier_str_mv FERRAZ, P. F. P. et al. Behavior of chicks subjected to thermal challenge. Engenharia Agrícola, Jaboticabal, v. 34, n. 6, p. 1039-1049, Nov./Dec. 2014. DOI: https://doi.org/10.1590/S0100-69162014000600002.
url http://repositorio.ufla.br/jspui/handle/1/45877
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Engenharia Agrícola
publisher.none.fl_str_mv Associação Brasileira de Engenharia Agrícola
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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