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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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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
07/05/2020 |
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Data da última atualização: |
07/05/2020 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
ARZABE, C.; COSTA, V. C.; ALVES, H. M. R.; MARTINS, A. L. da S.; BUENO, Y. M. |
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Afiliação: |
CRISTINA ARZABE, SIRE; VALERIA CRISTINA COSTA, SIN; HELENA MARIA RAMOS ALVES, CNPCa; ALBA LEONOR DA SILVA MARTINS, CNPS; YNAIA MASSE BUENO, SIN. |
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Título: |
Challenges and perspectives. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: ARZABE, C.; COSTA, V. C. (ed.). Gender equality: contributions of Embrapa. Brasília, DF: Embrapa, 2020. E-book. (Sustainable development goal, 5). |
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Idioma: |
Inglês |
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Conteúdo: |
Women have a fundamental role in maintaining life and productive activities that promote social equality, environmental justice and sustainable development. Among the challenges faced by them are the invisibility of their work, violence and discrimination in the countryside and institutions, the restriction of access to land and credit, and the difficulty of accessing public policies. There are numerous initiatives of the Brazilian government to promote gender equality and women's autonomy, culminating in various public policies. However, the cultural and paradigm shift needed to value, recognize and empower women in the countryside, in forests and in cities, requires that these policies be transformed into state policies, so that they continue regardless of those in power. One issue that deserves to be highlighted in relation to public policies is that often the insertion of this theme occurs in the logic of transversality. This logic allows women to permeate all spheres and initiatives, but in many cases what happens is the inexistence of specific actions that value their protagonism. Thus, it is essential to implement specific public policies, programs and projects for women, which can effectively guarantee their participation in decision-making, strengthening their autonomy and their insertion in productive activities. |
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Thesagro: |
Igualdade de Genero; Mulher; Mulher Rural. |
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Thesaurus NAL: |
Gender; Women in agriculture. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/212820/1/Challenges-and-perspectives-2020.pdf
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Marc: |
LEADER 02042naa a2200229 a 4500
001 2122159
005 2020-05-07
008 2020 bl uuuu u00u1 u #d
100 1 $aARZABE, C.
245 $aChallenges and perspectives.$h[electronic resource]
260 $c2020
520 $aWomen have a fundamental role in maintaining life and productive activities that promote social equality, environmental justice and sustainable development. Among the challenges faced by them are the invisibility of their work, violence and discrimination in the countryside and institutions, the restriction of access to land and credit, and the difficulty of accessing public policies. There are numerous initiatives of the Brazilian government to promote gender equality and women's autonomy, culminating in various public policies. However, the cultural and paradigm shift needed to value, recognize and empower women in the countryside, in forests and in cities, requires that these policies be transformed into state policies, so that they continue regardless of those in power. One issue that deserves to be highlighted in relation to public policies is that often the insertion of this theme occurs in the logic of transversality. This logic allows women to permeate all spheres and initiatives, but in many cases what happens is the inexistence of specific actions that value their protagonism. Thus, it is essential to implement specific public policies, programs and projects for women, which can effectively guarantee their participation in decision-making, strengthening their autonomy and their insertion in productive activities.
650 $aGender
650 $aWomen in agriculture
650 $aIgualdade de Genero
650 $aMulher
650 $aMulher Rural
700 1 $aCOSTA, V. C.
700 1 $aALVES, H. M. R.
700 1 $aMARTINS, A. L. da S.
700 1 $aBUENO, Y. M.
773 $tIn: ARZABE, C.; COSTA, V. C. (ed.). Gender equality: contributions of Embrapa. Brasília, DF: Embrapa, 2020. E-book. (Sustainable development goal, 5).
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