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| 18. |  | MULLER, M. D.; BRIGHENTI, A. M.; MARTINS, C. E. Equações de dupla e simples entrada para estimação do volume de árvores estabelecidas em sistemas silvipastoris. Pesquisa Florestal Brasileira, v. 39, e201902043, p. 286-287, 2019. Numero especial.
Edição dos resumos do IUFRO World Congress, 25., 2019, Curitiba.| Biblioteca(s): Embrapa Gado de Leite. |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
31/10/2023 |
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Data da última atualização: |
31/10/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
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. |
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Afiliação: |
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. |
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Título: |
Reproductive development of dairy heifers in an integrated livestock-forest system during the summer. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Animal Reproduction, v. 20, n. 3, e20230100, 2023. |
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DOI: |
https://doi.org/10.1590/1984-3143-AR2023-0100 |
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Idioma: |
Inglês |
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Conteúdo: |
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. |
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Palavras-Chave: |
Desenvolvimento reprodutivo; Estresse térmico; Integração pecuaria-floresta; Sistema integrado. |
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Thesagro: |
Bem-Estar; Bovino; Gado Leiteiro; Reprodução Animal. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1157603/1/Reproductive-development-of-dairy-heifers-in-an-integrated-livestock-forest-system-during-the-summer.pdf
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|
Marc: |
LEADER 02371naa a2200349 a 4500
001 2157603
005 2023-10-31
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1984-3143-AR2023-0100$2DOI
100 1 $aDIAS, H. R. S.
245 $aReproductive development of dairy heifers in an integrated livestock-forest system during the summer.$h[electronic resource]
260 $c2023
520 $aThis 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.
650 $aBem-Estar
650 $aBovino
650 $aGado Leiteiro
650 $aReprodução Animal
653 $aDesenvolvimento reprodutivo
653 $aEstresse térmico
653 $aIntegração pecuaria-floresta
653 $aSistema integrado
700 1 $aCAMARGO, A. J. dos R.
700 1 $aOLIVEIRA, G. F.
700 1 $aMOURÃO, A. M.
700 1 $aSARAIVA, N. Z.
700 1 $aCAMARGO, L. S. de A.
700 1 $aMULLER, M. D.
700 1 $aMARTINS, C. E.
700 1 $aNOGUEIRA, L. A. G.
700 1 $aBRANDÃO, F. Z.
700 1 $aOLIVEIRA, C. S.
773 $tAnimal Reproduction$gv. 20, n. 3, e20230100, 2023.
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Embrapa Gado de Leite (CNPGL) |
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