Reproductive development of dairy heifers in an integrated livestock-forest system during the summer.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1157603 https://doi.org/10.1590/1984-3143-AR2023-0100 |
Resumo: | This study aimed to assess the cortisol, body and reproductive development of prepubertal Holstein and Holstein-Gir ¾ heifers at 27 months of age maintained in an integrated livestock-forest (ILF) system for 60 summer days compared to the monoculture system in full sun (FS). The ILF system promoted changes (P=0.02) in the cortisol levels of Holstein-Gir ¾ heifers and did not affect weight gain in any of the breed groups studied. Animals in ILF system presented a lower (P=0.006) vulvar development for the rima height parameter and similar for the vulva width parameter. The ovarian follicular population of Holstein-Gir ¾ heifers in the ILF system was lower (P=0.004); however, for the Holstein heifers, no statistical difference was found, and numbers were higher (P=0.08) in the ILF system. None of the other ovarian parameters studied had any changes, and we also found important racial differences. Weight gain (P=0.003), vulvar development (P<0.001), and mean follicular size (P=0.008) were higher in the Holstein-Gir ¾ animals. Based on such results, the effect of the ILF system at 27 months of age on stress and reproductive parameters in the Holstein breed is considered positive, although negative effects have been detected on reproductive parameters in the Holstein-Gir ¾ breed. |
id |
EMBR_e6162151d0779a8518eb19b7b8b20cb4 |
---|---|
oai_identifier_str |
oai:www.alice.cnptia.embrapa.br:doc/1157603 |
network_acronym_str |
EMBR |
network_name_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository_id_str |
2154 |
spelling |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer.Estresse térmicoDesenvolvimento reprodutivoSistema integradoIntegração pecuaria-florestaBovinoBem-EstarGado LeiteiroReprodução AnimalThis study aimed to assess the cortisol, body and reproductive development of prepubertal Holstein and Holstein-Gir ¾ heifers at 27 months of age maintained in an integrated livestock-forest (ILF) system for 60 summer days compared to the monoculture system in full sun (FS). The ILF system promoted changes (P=0.02) in the cortisol levels of Holstein-Gir ¾ heifers and did not affect weight gain in any of the breed groups studied. Animals in ILF system presented a lower (P=0.006) vulvar development for the rima height parameter and similar for the vulva width parameter. The ovarian follicular population of Holstein-Gir ¾ heifers in the ILF system was lower (P=0.004); however, for the Holstein heifers, no statistical difference was found, and numbers were higher (P=0.08) in the ILF system. None of the other ovarian parameters studied had any changes, and we also found important racial differences. Weight gain (P=0.003), vulvar development (P<0.001), and mean follicular size (P=0.008) were higher in the Holstein-Gir ¾ animals. Based on such results, the effect of the ILF system at 27 months of age on stress and reproductive parameters in the Holstein breed is considered positive, although negative effects have been detected on reproductive parameters in the Holstein-Gir ¾ breed.HUGO ROCHA SABENÇA DIAS, UNIVERSIDADE FEDERAL FLUMINENSE; AGOSTINHO JORGE DOS REIS CAMARGO; GABRIELA FERREIRA OLIVEIRA, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; ANDERSON MOREIRA MOURÃO; NAIARA ZOCCAL SARAIVA, CNPGL; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; MARCELO DIAS MULLER, CNPGL; CARLOS EUGENIO MARTINS, CNPGL; LUIZ ALTAMIRO GARCIA NOGUEIRA, UNIVERSIDADE FEDERAL FLUMINENSE; FELIPE ZANDONADI BRANDÃO, UNIVERSIDADE FEDERAL FLUMINENSE; CLARA SLADE OLIVEIRA, CNPGL.DIAS, H. R. S.CAMARGO, A. J. dos R.OLIVEIRA, G. F.MOURÃO, A. M.SARAIVA, N. Z.CAMARGO, L. S. de A.MULLER, M. D.MARTINS, C. E.NOGUEIRA, L. A. G.BRANDÃO, F. Z.OLIVEIRA, C. S.2023-10-31T13:31:56Z2023-10-31T13:31:56Z2023-10-312023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAnimal Reproduction, v. 20, n. 3, e20230100, 2023.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1157603https://doi.org/10.1590/1984-3143-AR2023-0100enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2023-10-31T13:31:56Zoai:www.alice.cnptia.embrapa.br:doc/1157603Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542023-10-31T13:31:56falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542023-10-31T13:31:56Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
title |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
spellingShingle |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. DIAS, H. R. S. Estresse térmico Desenvolvimento reprodutivo Sistema integrado Integração pecuaria-floresta Bovino Bem-Estar Gado Leiteiro Reprodução Animal |
title_short |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
title_full |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
title_fullStr |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
title_full_unstemmed |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
title_sort |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
author |
DIAS, H. R. S. |
author_facet |
DIAS, H. R. S. CAMARGO, A. J. dos R. OLIVEIRA, G. F. MOURÃO, A. M. SARAIVA, N. Z. CAMARGO, L. S. de A. MULLER, M. D. MARTINS, C. E. NOGUEIRA, L. A. G. BRANDÃO, F. Z. OLIVEIRA, C. S. |
author_role |
author |
author2 |
CAMARGO, A. J. dos R. OLIVEIRA, G. F. MOURÃO, A. M. SARAIVA, N. Z. CAMARGO, L. S. de A. MULLER, M. D. MARTINS, C. E. NOGUEIRA, L. A. G. BRANDÃO, F. Z. OLIVEIRA, C. S. |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
HUGO ROCHA SABENÇA DIAS, UNIVERSIDADE FEDERAL FLUMINENSE; AGOSTINHO JORGE DOS REIS CAMARGO; GABRIELA FERREIRA OLIVEIRA, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; ANDERSON MOREIRA MOURÃO; NAIARA ZOCCAL SARAIVA, CNPGL; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; MARCELO DIAS MULLER, CNPGL; CARLOS EUGENIO MARTINS, CNPGL; LUIZ ALTAMIRO GARCIA NOGUEIRA, UNIVERSIDADE FEDERAL FLUMINENSE; FELIPE ZANDONADI BRANDÃO, UNIVERSIDADE FEDERAL FLUMINENSE; CLARA SLADE OLIVEIRA, CNPGL. |
dc.contributor.author.fl_str_mv |
DIAS, H. R. S. CAMARGO, A. J. dos R. OLIVEIRA, G. F. MOURÃO, A. M. SARAIVA, N. Z. CAMARGO, L. S. de A. MULLER, M. D. MARTINS, C. E. NOGUEIRA, L. A. G. BRANDÃO, F. Z. OLIVEIRA, C. S. |
dc.subject.por.fl_str_mv |
Estresse térmico Desenvolvimento reprodutivo Sistema integrado Integração pecuaria-floresta Bovino Bem-Estar Gado Leiteiro Reprodução Animal |
topic |
Estresse térmico Desenvolvimento reprodutivo Sistema integrado Integração pecuaria-floresta Bovino Bem-Estar Gado Leiteiro Reprodução Animal |
description |
This study aimed to assess the cortisol, body and reproductive development of prepubertal Holstein and Holstein-Gir ¾ heifers at 27 months of age maintained in an integrated livestock-forest (ILF) system for 60 summer days compared to the monoculture system in full sun (FS). The ILF system promoted changes (P=0.02) in the cortisol levels of Holstein-Gir ¾ heifers and did not affect weight gain in any of the breed groups studied. Animals in ILF system presented a lower (P=0.006) vulvar development for the rima height parameter and similar for the vulva width parameter. The ovarian follicular population of Holstein-Gir ¾ heifers in the ILF system was lower (P=0.004); however, for the Holstein heifers, no statistical difference was found, and numbers were higher (P=0.08) in the ILF system. None of the other ovarian parameters studied had any changes, and we also found important racial differences. Weight gain (P=0.003), vulvar development (P<0.001), and mean follicular size (P=0.008) were higher in the Holstein-Gir ¾ animals. Based on such results, the effect of the ILF system at 27 months of age on stress and reproductive parameters in the Holstein breed is considered positive, although negative effects have been detected on reproductive parameters in the Holstein-Gir ¾ breed. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-10-31T13:31:56Z 2023-10-31T13:31:56Z 2023-10-31 2023 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Animal Reproduction, v. 20, n. 3, e20230100, 2023. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1157603 https://doi.org/10.1590/1984-3143-AR2023-0100 |
identifier_str_mv |
Animal Reproduction, v. 20, n. 3, e20230100, 2023. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1157603 https://doi.org/10.1590/1984-3143-AR2023-0100 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503551267897344 |