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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
10/10/2005 |
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Data da última atualização: |
11/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMARGO, L. S. de A.; VIANA, J. H. M.; SÁ, W. F. de; FERREIRA, A. M.; VALE FILHO, V. R. |
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Afiliação: |
LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL. |
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Título: |
Developmental competence of oocytes from prepubertal Bos indicus crossbred cattle. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 85, n. 1/2, p. 53-59, 2005. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2004.04.020 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of the present study was to evaluate the effect of age on embryogenic competence of oocytes recovered from Bos indicus crossbred calves and heifers. Cumulus-oocyte complexes (COCs) were collected from 4- to 7-month-old calves (experiment 1) and from 9- to 14-month-old heifers (experiment 2) during processing at an abattoir. In both experiments cow COCs were used as control. COCs were in vitro matured and fertilized, and the presumptive zygotes co-cultured with cumulus cells until 224 h post insemination (hpi). In experiment 1, the development rate during the first 68-72 hpi was similar (P > 0.05) between embryos derived from calves and cows. Fewer embryos from calves developed to the blastocyst stage, resulting in a lesser blastocyst production as well as lesser hatching rate (P < 0.05). The embryo development after blastocyst stage was, nevertheless, similar (P > 0.05) between blastocysts derived from calves and cows, suggesting that the development after blastocoele formation is not compromised in embryos derived from calves. In experiment 2, there were no differences (P > 0.05) on cleavage, blastocyst and hatching rates between embryos derived from prepubertal heifers and cows. The rate of blastocyst development until hatching was also similar (P > 0.05). These results indicate that oocytes from 9- to 14-month-old B. indicus crossbred heifers have the same developmental competence as oocytes derived from cows, while ocytes derived from 4- to 7-month-old B. indicus crossbred calves are less competent in developing to the blastocyst stage in vitro. It suggests that oocyte competence in B. indicus crossbred cattle is achieved around 9-14 months of age. MenosThe aim of the present study was to evaluate the effect of age on embryogenic competence of oocytes recovered from Bos indicus crossbred calves and heifers. Cumulus-oocyte complexes (COCs) were collected from 4- to 7-month-old calves (experiment 1) and from 9- to 14-month-old heifers (experiment 2) during processing at an abattoir. In both experiments cow COCs were used as control. COCs were in vitro matured and fertilized, and the presumptive zygotes co-cultured with cumulus cells until 224 h post insemination (hpi). In experiment 1, the development rate during the first 68-72 hpi was similar (P > 0.05) between embryos derived from calves and cows. Fewer embryos from calves developed to the blastocyst stage, resulting in a lesser blastocyst production as well as lesser hatching rate (P < 0.05). The embryo development after blastocyst stage was, nevertheless, similar (P > 0.05) between blastocysts derived from calves and cows, suggesting that the development after blastocoele formation is not compromised in embryos derived from calves. In experiment 2, there were no differences (P > 0.05) on cleavage, blastocyst and hatching rates between embryos derived from prepubertal heifers and cows. The rate of blastocyst development until hatching was also similar (P > 0.05). These results indicate that oocytes from 9- to 14-month-old B. indicus crossbred heifers have the same developmental competence as oocytes derived from cows, while ocytes derived from 4- to 7-month-old B. indicus... Mostrar Tudo |
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Palavras-Chave: |
Fertilização in vitro; Oocitos. |
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Thesagro: |
Bovino. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02379naa a2200217 a 4500
001 1594875
005 2022-08-11
008 2005 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2004.04.020$2DOI
100 1 $aCAMARGO, L. S. de A.
245 $aDevelopmental competence of oocytes from prepubertal Bos indicus crossbred cattle.$h[electronic resource]
260 $c2005
520 $aThe aim of the present study was to evaluate the effect of age on embryogenic competence of oocytes recovered from Bos indicus crossbred calves and heifers. Cumulus-oocyte complexes (COCs) were collected from 4- to 7-month-old calves (experiment 1) and from 9- to 14-month-old heifers (experiment 2) during processing at an abattoir. In both experiments cow COCs were used as control. COCs were in vitro matured and fertilized, and the presumptive zygotes co-cultured with cumulus cells until 224 h post insemination (hpi). In experiment 1, the development rate during the first 68-72 hpi was similar (P > 0.05) between embryos derived from calves and cows. Fewer embryos from calves developed to the blastocyst stage, resulting in a lesser blastocyst production as well as lesser hatching rate (P < 0.05). The embryo development after blastocyst stage was, nevertheless, similar (P > 0.05) between blastocysts derived from calves and cows, suggesting that the development after blastocoele formation is not compromised in embryos derived from calves. In experiment 2, there were no differences (P > 0.05) on cleavage, blastocyst and hatching rates between embryos derived from prepubertal heifers and cows. The rate of blastocyst development until hatching was also similar (P > 0.05). These results indicate that oocytes from 9- to 14-month-old B. indicus crossbred heifers have the same developmental competence as oocytes derived from cows, while ocytes derived from 4- to 7-month-old B. indicus crossbred calves are less competent in developing to the blastocyst stage in vitro. It suggests that oocyte competence in B. indicus crossbred cattle is achieved around 9-14 months of age.
650 $aBovino
653 $aFertilização in vitro
653 $aOocitos
700 1 $aVIANA, J. H. M.
700 1 $aSÁ, W. F. de
700 1 $aFERREIRA, A. M.
700 1 $aVALE FILHO, V. R.
773 $tAnimal Reproduction Science$gv. 85, n. 1/2, p. 53-59, 2005.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
06/01/2020 |
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Data da última atualização: |
19/02/2020 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
ALVARENGA, R. A. F. DE; NETO, J. A. DE A.; LINS, I. DE O.; PEGORARO, L. A.; LIMA, E. G. DE; BARRANTES L. DE S.; FIGUEIREDO, M. C. B. de; CASTRO, A. L. A. |
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Afiliação: |
RODRIGO AUGUSTO FREITAS DE ALVARENGA, Universidade do Estado de Santa Catarina (UESC); JOSÉ ADOLFO DE ALMEIDA NETO, Universidade Estadual de Santa Cruz (UESC); ITTANA DE OLIVEIRA LINS, Universidade Estadual de Santa Cruz (UESC); LEANDRO ANDRADE PEGORARO, Universidade Tecnológica Federal do Paraná (UTFP); ELIAINE GARCIA DE LIMA, Universidade Tecnológica Federal do Paraná (UTFP); LETICIA DE SANTI BERRANTES; MARIA CLEA BRITO DE FIGUEIREDO, CNPAT; ANA LÍDIA ALMEIDA CASTRO. |
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Título: |
Modelos de contabilização de recursos (RAM). |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: UGAYA, C. M. L.; ALMEIDA NETO, J. A. de; FIGUEIREDO, M. C. B. de. (Org.). Recomendação de modelos de avaliação de impacto do ciclo de vida para o contexto brasileiro. Brasília, DF: IBICT, 2019. |
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Volume: |
cap. 5 |
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Páginas: |
p. 53-72. |
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Idioma: |
Português |
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Palavras-Chave: |
(ACV); (ASCV); (ICV); Avaliação de Ciclo de Vida; Inventário de Ciclo de Vida; Sustentabilidade de Ciclo de Vida. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/210958/1/CLV19038.pdf
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Marc: |
LEADER 00986naa a2200289 a 4500
001 2118204
005 2020-02-19
008 2019 bl uuuu u00u1 u #d
100 1 $aALVARENGA, R. A. F. DE
245 $aModelos de contabilização de recursos (RAM).$h[electronic resource]
260 $c2019
300 $ap. 53-72. cap. 5
490 $vcap. 5
653 $a(ACV)
653 $a(ASCV)
653 $a(ICV)
653 $aAvaliação de Ciclo de Vida
653 $aInventário de Ciclo de Vida
653 $aSustentabilidade de Ciclo de Vida
700 1 $aNETO, J. A. DE A.
700 1 $aLINS, I. DE O.
700 1 $aPEGORARO, L. A.
700 1 $aLIMA, E. G. DE
700 1 $aBARRANTES L. DE S.
700 1 $aFIGUEIREDO, M. C. B. de
700 1 $aCASTRO, A. L. A.
773 $tIn: UGAYA, C. M. L.; ALMEIDA NETO, J. A. de; FIGUEIREDO, M. C. B. de. (Org.). Recomendação de modelos de avaliação de impacto do ciclo de vida para o contexto brasileiro. Brasília, DF: IBICT, 2019.
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Embrapa Agroindústria Tropical (CNPAT) |
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