Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/7098 https://doi.org/10.1016/j.livsci.2010.01.017 |
Resumo: | To evaluate reactivity to assess the temperament of Nellore steers in two feedlot housing systems (group pen or individual pen) and its relationship with plasmatic cortisol, 36 experimental units were observed five times at 28-day intervals of weight management during a 112-day feedlot confinement. A reactivity score scale ranging from 1 to 5 was applied when an animal was in the chute system. To the calmest animal, a reactivity score of 1 was ascribed and to the most agitated, 5. Blood samples were collected for cortisol analysis. No differences were found in reactivity and feedlot system. There was a relationship noted between reactivity and feedlot time in both housing systems (Pb0.01). There was a relation between reactivity and cortisol levels for group animals (P=0.0616) and for individual ones (Pb0.01). Cortisol levels varied among housing systems (Pb0.01). Feedlot time influenced the cortisol levels (Pb0.09 individual; Pb0.01 group) and when variable time was included, these levels changed, decreasing in the group pen and increasing in individual pens. The continuous handling reduces reactivity and plasmatic cortisol, and group pen system seems to be less stressfully than individual pens. |
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Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisolanimal behaviorcattle managementreactivityscore scaleTo evaluate reactivity to assess the temperament of Nellore steers in two feedlot housing systems (group pen or individual pen) and its relationship with plasmatic cortisol, 36 experimental units were observed five times at 28-day intervals of weight management during a 112-day feedlot confinement. A reactivity score scale ranging from 1 to 5 was applied when an animal was in the chute system. To the calmest animal, a reactivity score of 1 was ascribed and to the most agitated, 5. Blood samples were collected for cortisol analysis. No differences were found in reactivity and feedlot system. There was a relationship noted between reactivity and feedlot time in both housing systems (Pb0.01). There was a relation between reactivity and cortisol levels for group animals (P=0.0616) and for individual ones (Pb0.01). Cortisol levels varied among housing systems (Pb0.01). Feedlot time influenced the cortisol levels (Pb0.09 individual; Pb0.01 group) and when variable time was included, these levels changed, decreasing in the group pen and increasing in individual pens. The continuous handling reduces reactivity and plasmatic cortisol, and group pen system seems to be less stressfully than individual pens.Elsevier2013-01-07T17:05:14Z2013-01-072010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/7098http://hdl.handle.net/10174/7098https://doi.org/10.1016/j.livsci.2010.01.017engTitto, Evaldo Antonio Lencioni ; TITTO, Cristiane Gonçalves ; GATTO, Eliane Gil ; Noronha, Cássia Maria Silva ; MOURÃO, Gerson Barreto ; Filho, José Carlos Machado Nogueira ; PEREIRA, Alfredo Manuel Franco . Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol. Livestock Science (Print), v. 129, p. 146-150, 2010.Livestock Sciencetitto@usp.ptndndndndapereira@uevora.pt387Titto, E.A.L.Titto, C.G.Gatto, E.G.Noronha, M.S.N.Nogueira Filho, J.C.M.Pereira, A.M.F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:46:56Zoai:dspace.uevora.pt:10174/7098Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:40.690451Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
title |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
spellingShingle |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol Titto, E.A.L. animal behavior cattle management reactivity score scale |
title_short |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
title_full |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
title_fullStr |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
title_full_unstemmed |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
title_sort |
Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol |
author |
Titto, E.A.L. |
author_facet |
Titto, E.A.L. Titto, C.G. Gatto, E.G. Noronha, M.S.N. Nogueira Filho, J.C.M. Pereira, A.M.F. |
author_role |
author |
author2 |
Titto, C.G. Gatto, E.G. Noronha, M.S.N. Nogueira Filho, J.C.M. Pereira, A.M.F. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Titto, E.A.L. Titto, C.G. Gatto, E.G. Noronha, M.S.N. Nogueira Filho, J.C.M. Pereira, A.M.F. |
dc.subject.por.fl_str_mv |
animal behavior cattle management reactivity score scale |
topic |
animal behavior cattle management reactivity score scale |
description |
To evaluate reactivity to assess the temperament of Nellore steers in two feedlot housing systems (group pen or individual pen) and its relationship with plasmatic cortisol, 36 experimental units were observed five times at 28-day intervals of weight management during a 112-day feedlot confinement. A reactivity score scale ranging from 1 to 5 was applied when an animal was in the chute system. To the calmest animal, a reactivity score of 1 was ascribed and to the most agitated, 5. Blood samples were collected for cortisol analysis. No differences were found in reactivity and feedlot system. There was a relationship noted between reactivity and feedlot time in both housing systems (Pb0.01). There was a relation between reactivity and cortisol levels for group animals (P=0.0616) and for individual ones (Pb0.01). Cortisol levels varied among housing systems (Pb0.01). Feedlot time influenced the cortisol levels (Pb0.09 individual; Pb0.01 group) and when variable time was included, these levels changed, decreasing in the group pen and increasing in individual pens. The continuous handling reduces reactivity and plasmatic cortisol, and group pen system seems to be less stressfully than individual pens. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01T00:00:00Z 2013-01-07T17:05:14Z 2013-01-07 |
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 |
http://hdl.handle.net/10174/7098 http://hdl.handle.net/10174/7098 https://doi.org/10.1016/j.livsci.2010.01.017 |
url |
http://hdl.handle.net/10174/7098 https://doi.org/10.1016/j.livsci.2010.01.017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Titto, Evaldo Antonio Lencioni ; TITTO, Cristiane Gonçalves ; GATTO, Eliane Gil ; Noronha, Cássia Maria Silva ; MOURÃO, Gerson Barreto ; Filho, José Carlos Machado Nogueira ; PEREIRA, Alfredo Manuel Franco . Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol. Livestock Science (Print), v. 129, p. 146-150, 2010. Livestock Science titto@usp.pt nd nd nd nd apereira@uevora.pt 387 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136500629110784 |