Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva

Detalhes bibliográficos
Autor(a) principal: Porcionato, MAF
Data de Publicação: 2005
Outros Autores: Negrao, J. A., Lima, MLP
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0102-09352005000600018
http://hdl.handle.net/11449/35112
Resumo: In a machine milking system in which calves were not present, oxytocin concentration (OT), cortisol release (CORT), milk yield and residual milk were evaluated for cows of three genetic groups: 1/2Gir x 1/2Holstein (n=6, genetic group F2), 1/4Gir x 3/4Holstein (n=6, genetic group F3) and Holstein (n=6, genetic group H). Group H had higher milk yield than groups F2 and F3, whereas OT was similar among groups. The increase in OT during milk-ing was greater for H and F3 than for F2. Residual milk for F2 was' higher than for F3 and H. The CORT for F2 was higher than for cows of the other two genetic groups. Cows from F2 and F3 were more stressed than H cows during machine milking, but the Gir x Holstein groups did release suffficient OT to induce an effective milk letdown response.
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spelling Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusivaMilk yield, residual milk, oxytocin concentration and cortisol release in Holstein and Gir x Holstein cows machine milked without stimulus from a calfcattlebehaviormilk ejectionstressIn a machine milking system in which calves were not present, oxytocin concentration (OT), cortisol release (CORT), milk yield and residual milk were evaluated for cows of three genetic groups: 1/2Gir x 1/2Holstein (n=6, genetic group F2), 1/4Gir x 3/4Holstein (n=6, genetic group F3) and Holstein (n=6, genetic group H). Group H had higher milk yield than groups F2 and F3, whereas OT was similar among groups. The increase in OT during milk-ing was greater for H and F3 than for F2. Residual milk for F2 was' higher than for F3 and H. The CORT for F2 was higher than for cows of the other two genetic groups. Cows from F2 and F3 were more stressed than H cows during machine milking, but the Gir x Holstein groups did release suffficient OT to induce an effective milk letdown response.UNESP, Fac Ciências Agrar & Vet, BR-14884900 Jaboticabal, SP, BrazilInst Zootecnia, Ribeirao Preto, BrazilUSP, Fac Zootecn & Engn Alimentos, Pirassununga, SP, BrazilUNESP, Fac Ciências Agrar & Vet, BR-14884900 Jaboticabal, SP, BrazilArquivo Brasileiro Medicina Veterinaria ZootecniaUniversidade Estadual Paulista (Unesp)Inst ZootecniaUniversidade de São Paulo (USP)Porcionato, MAFNegrao, J. A.Lima, MLP2014-05-20T15:24:31Z2014-05-20T15:24:31Z2005-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article820-824application/pdfhttp://dx.doi.org/10.1590/S0102-09352005000600018Arquivo Brasileiro de Medicina Veterinaria e Zootecnia. Minas Gerais: Arquivo Brasileiro Medicina Veterinaria Zootecnia, v. 57, n. 6, p. 820-824, 2005.0102-0935http://hdl.handle.net/11449/3511210.1590/S0102-09352005000600018S0102-09352005000600018WOS:000236601600018WOS000236601600018.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporArquivo Brasileiro de Medicina Veterinária e Zootecnia0.2860,248info:eu-repo/semantics/openAccess2024-01-05T06:28:37Zoai:repositorio.unesp.br:11449/35112Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:12:02.256398Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
Milk yield, residual milk, oxytocin concentration and cortisol release in Holstein and Gir x Holstein cows machine milked without stimulus from a calf
title Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
spellingShingle Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
Porcionato, MAF
cattle
behavior
milk ejection
stress
title_short Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
title_full Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
title_fullStr Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
title_full_unstemmed Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
title_sort Produção de leite, leite residual e concentração hormonal de vacas Gir × Holandesa e Holandesa em ordenha mecanizada exclusiva
author Porcionato, MAF
author_facet Porcionato, MAF
Negrao, J. A.
Lima, MLP
author_role author
author2 Negrao, J. A.
Lima, MLP
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Inst Zootecnia
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Porcionato, MAF
Negrao, J. A.
Lima, MLP
dc.subject.por.fl_str_mv cattle
behavior
milk ejection
stress
topic cattle
behavior
milk ejection
stress
description In a machine milking system in which calves were not present, oxytocin concentration (OT), cortisol release (CORT), milk yield and residual milk were evaluated for cows of three genetic groups: 1/2Gir x 1/2Holstein (n=6, genetic group F2), 1/4Gir x 3/4Holstein (n=6, genetic group F3) and Holstein (n=6, genetic group H). Group H had higher milk yield than groups F2 and F3, whereas OT was similar among groups. The increase in OT during milk-ing was greater for H and F3 than for F2. Residual milk for F2 was' higher than for F3 and H. The CORT for F2 was higher than for cows of the other two genetic groups. Cows from F2 and F3 were more stressed than H cows during machine milking, but the Gir x Holstein groups did release suffficient OT to induce an effective milk letdown response.
publishDate 2005
dc.date.none.fl_str_mv 2005-12-01
2014-05-20T15:24:31Z
2014-05-20T15:24:31Z
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://dx.doi.org/10.1590/S0102-09352005000600018
Arquivo Brasileiro de Medicina Veterinaria e Zootecnia. Minas Gerais: Arquivo Brasileiro Medicina Veterinaria Zootecnia, v. 57, n. 6, p. 820-824, 2005.
0102-0935
http://hdl.handle.net/11449/35112
10.1590/S0102-09352005000600018
S0102-09352005000600018
WOS:000236601600018
WOS000236601600018.pdf
url http://dx.doi.org/10.1590/S0102-09352005000600018
http://hdl.handle.net/11449/35112
identifier_str_mv Arquivo Brasileiro de Medicina Veterinaria e Zootecnia. Minas Gerais: Arquivo Brasileiro Medicina Veterinaria Zootecnia, v. 57, n. 6, p. 820-824, 2005.
0102-0935
10.1590/S0102-09352005000600018
S0102-09352005000600018
WOS:000236601600018
WOS000236601600018.pdf
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Arquivo Brasileiro de Medicina Veterinária e Zootecnia
0.286
0,248
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 820-824
application/pdf
dc.publisher.none.fl_str_mv Arquivo Brasileiro Medicina Veterinaria Zootecnia
publisher.none.fl_str_mv Arquivo Brasileiro Medicina Veterinaria Zootecnia
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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