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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: |
25/03/2011 |
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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.; FREITAS, C. de; SÁ, W. F. de; FERREIRA, A. de M.; SERAPIÃO, R. V.; VIANA, J. H. M. |
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Afiliação: |
LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; CELIO DE FREITAS, CNPGL; WANDERLEI FERREIRA DE SÁ, Pesquisador aposentado do CNPGL; ADEMIR DE MORAES FERREIRA, Pesquisador aposentado do CNPGL; RAQUEL VARELA SERAPIÃO, PESAGRO-RIO; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
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Título: |
Gestation length, birth weigth and offspring gender ratio of in vitro-produced Gyr (Bos indicus) cattle embryos. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 120, n. 1/4, p. 10-15, 2010. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2010.02.013 |
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Idioma: |
Inglês |
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Conteúdo: |
In vitro embryo production (IVP) has been suggested to result in a greater proportion of male calves, longer gestation and heavier offspring than artificial insemination in Bos taurus cattle. Despite the increasing use of IVP in tropical countries, its effects upon these traits in Bos indicus have not been conclusively investigated. Gyr is a B. indicus dairy breed with known physiological differences from B. taurus, such as a longer gestation period and lighter offspring. The aim of this study was to evaluate the effect of IVP on gestation length, birth weight and gender ratio in Gyr offspring. Oocytes were recovered from Gyr cows by ovum pick-up and were matured and fertilized with thawed Gyr semen in vitro. Embryos were cultured in CR2aa medium with cumulus cells and 10% fetal calf serum under 5% CO(2) at 38.5 degrees C in air. Seven- to eight-day blastocysts were transferred to synchronized recipients. Data on gestation length and birth weight of calves from in vitro-produced embryos were compared to data obtained from Gyr calves produced by artificial insemination (AI) and natural breeding (NB) during the same period using analysis of variance, and the gender ratio was compared to the expected 1:1 ratio using a chi-square test. IVP increased (P<0.01) the percentage of male offspring (76.9%) compared to the expected 1:1 ratio, while no difference (P>0.05) was observed in the AI and NB groups. Gestation length was similar (P>0.05) between the IVP and AI groups, but IVP-derived offspring were heavier (P<0.05) than AI- and NB-derived ones, mainly for male calves (P<0.05). These data show that in vitro production affects the subsequent development of Gyr embryos, resulting in a skewed sex ratio and increased birth weight. MenosIn vitro embryo production (IVP) has been suggested to result in a greater proportion of male calves, longer gestation and heavier offspring than artificial insemination in Bos taurus cattle. Despite the increasing use of IVP in tropical countries, its effects upon these traits in Bos indicus have not been conclusively investigated. Gyr is a B. indicus dairy breed with known physiological differences from B. taurus, such as a longer gestation period and lighter offspring. The aim of this study was to evaluate the effect of IVP on gestation length, birth weight and gender ratio in Gyr offspring. Oocytes were recovered from Gyr cows by ovum pick-up and were matured and fertilized with thawed Gyr semen in vitro. Embryos were cultured in CR2aa medium with cumulus cells and 10% fetal calf serum under 5% CO(2) at 38.5 degrees C in air. Seven- to eight-day blastocysts were transferred to synchronized recipients. Data on gestation length and birth weight of calves from in vitro-produced embryos were compared to data obtained from Gyr calves produced by artificial insemination (AI) and natural breeding (NB) during the same period using analysis of variance, and the gender ratio was compared to the expected 1:1 ratio using a chi-square test. IVP increased (P<0.01) the percentage of male offspring (76.9%) compared to the expected 1:1 ratio, while no difference (P>0.05) was observed in the AI and NB groups. Gestation length was similar (P>0.05) between the IVP and AI groups, but IVP-der... Mostrar Tudo |
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Palavras-Chave: |
Offspring. |
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Thesagro: |
Bovino; Gado Zebu. |
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Thesaurus Nal: |
cattle; in vitro fertilization. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02555naa a2200253 a 4500
001 1883053
005 2022-08-11
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2010.02.013$2DOI
100 1 $aCAMARGO, L. S. de A.
245 $aGestation length, birth weigth and offspring gender ratio of in vitro-produced Gyr (Bos indicus) cattle embryos.$h[electronic resource]
260 $c2010
520 $aIn vitro embryo production (IVP) has been suggested to result in a greater proportion of male calves, longer gestation and heavier offspring than artificial insemination in Bos taurus cattle. Despite the increasing use of IVP in tropical countries, its effects upon these traits in Bos indicus have not been conclusively investigated. Gyr is a B. indicus dairy breed with known physiological differences from B. taurus, such as a longer gestation period and lighter offspring. The aim of this study was to evaluate the effect of IVP on gestation length, birth weight and gender ratio in Gyr offspring. Oocytes were recovered from Gyr cows by ovum pick-up and were matured and fertilized with thawed Gyr semen in vitro. Embryos were cultured in CR2aa medium with cumulus cells and 10% fetal calf serum under 5% CO(2) at 38.5 degrees C in air. Seven- to eight-day blastocysts were transferred to synchronized recipients. Data on gestation length and birth weight of calves from in vitro-produced embryos were compared to data obtained from Gyr calves produced by artificial insemination (AI) and natural breeding (NB) during the same period using analysis of variance, and the gender ratio was compared to the expected 1:1 ratio using a chi-square test. IVP increased (P<0.01) the percentage of male offspring (76.9%) compared to the expected 1:1 ratio, while no difference (P>0.05) was observed in the AI and NB groups. Gestation length was similar (P>0.05) between the IVP and AI groups, but IVP-derived offspring were heavier (P<0.05) than AI- and NB-derived ones, mainly for male calves (P<0.05). These data show that in vitro production affects the subsequent development of Gyr embryos, resulting in a skewed sex ratio and increased birth weight.
650 $acattle
650 $ain vitro fertilization
650 $aBovino
650 $aGado Zebu
653 $aOffspring
700 1 $aFREITAS, C. de
700 1 $aSÁ, W. F. de
700 1 $aFERREIRA, A. de M.
700 1 $aSERAPIÃO, R. V.
700 1 $aVIANA, J. H. M.
773 $tAnimal Reproduction Science$gv. 120, n. 1/4, p. 10-15, 2010.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
20/04/2010 |
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Data da última atualização: |
26/11/2022 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
DEL PELOSO, M. J.; MELO, L. C.; FARIA, L. C. de; COSTA, J. G. C. da. |
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Afiliação: |
MARIA JOSE DEL PELOSO, CNPAF; LEONARDO CUNHA MELO, CNPAF; LUIS CLAUDIO DE FARIA, CNPAF; JOAQUIM GERALDO CAPRIO DA COSTA, CNPAF. |
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Título: |
Programa de melhoramento genético do feijoeiro comum da Embrapa Arroz e Feijão. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: MELO, L. C. (ed.). Procedimentos para condução de experimentos de Valor de Cultivo e Uso em feijoeiro comum. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2009. |
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Páginas: |
p. 9-12. |
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Série: |
(Embrapa Arroz e Feijão. Documentos, 239). |
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ISSN: |
1678-9644 |
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Idioma: |
Português |
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Conteúdo: |
Nos últimos anos, o programa de melhoramento genético do feijoeiro comum da Embrapa lançou novas cultivares de feijoeiro comum com os mais diversos tipos comerciais de grão, alcançando uma eficiência de uma nova cultivar por ano. A relação custo x benefício desse esforço mostrou que para cada dólar investido no desenvolvimento dessas cultivares houve um retorno de 10 dólares. |
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Thesagro: |
Feijão; Melhoramento genético vegetal; Phaseolus vulgaris. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/697063/1/doc-239-p9.pdf
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Marc: |
LEADER 01182naa a2200229 a 4500
001 1697063
005 2022-11-26
008 2009 bl uuuu u00u1 u #d
022 $a1678-9644
100 1 $aDEL PELOSO, M. J.
245 $aPrograma de melhoramento genético do feijoeiro comum da Embrapa Arroz e Feijão.
260 $c2009
300 $ap. 9-12.
490 $a(Embrapa Arroz e Feijão. Documentos, 239).
520 $aNos últimos anos, o programa de melhoramento genético do feijoeiro comum da Embrapa lançou novas cultivares de feijoeiro comum com os mais diversos tipos comerciais de grão, alcançando uma eficiência de uma nova cultivar por ano. A relação custo x benefício desse esforço mostrou que para cada dólar investido no desenvolvimento dessas cultivares houve um retorno de 10 dólares.
650 $aFeijão
650 $aMelhoramento genético vegetal
650 $aPhaseolus vulgaris
700 1 $aMELO, L. C.
700 1 $aFARIA, L. C. de
700 1 $aCOSTA, J. G. C. da
773 $tIn: MELO, L. C. (ed.). Procedimentos para condução de experimentos de Valor de Cultivo e Uso em feijoeiro comum. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2009.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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