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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
24/10/2014 |
Data da última atualização: |
27/10/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
OLIVEIRA, M. E. F.; FELICIANO, M. A. R.; D'AMATO, C. C.; OLIVEIRA, L. G.; BICUDO, S. D.; FONSECA, J. F. da; VICENTE, W. R. R.; VISCO, E.; BARTLEWSKID, P. M. |
Afiliação: |
Maria E. F. Oliveira, São Paulo State University (USP) - Jaboticabal, SP, Brazil; Marcus A. R. Feliciano, USP - Jaboticabal, SP, Brazil; Carla C. D'Amato, USP - Jaboticabal, SP, Brazil; Luís G. Oliveira, USP - Jaboticabal, SP, Brazil; Sony D. Bicudo, Paulo State University (USP) - Botucatu, SP, Brazil; Jeferson Ferreira da Fonseca, CNPC; Wilter R. R. Vicente, USP - Jaboticabal, SP, Brazil; Elise Visco, University of Guelph, Guelph, Canada; Pawel M. Bartlewskid, University of Guelph, Guelph, Canada. |
Título: |
Correlations between ovarian follicular blood flow and superovulatory responses in ewes. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Animal Reproduction Science, Champaign, v. 144, n. 1/2, p. 30-37, Jan. 2014. |
Idioma: |
Inglês |
Conteúdo: |
Abstract: The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0?6, Group 1) and five to a long-term progesterone-based protocol (Days 0?12, Group 2) to synchronize estrus and ovulations after the superovulatory treatment. Porcine FSH (pFSH, 200 mg) was administered in 8 decreasing doses over 4 days, starting on Days 4 and 10 in Groups 1 and 2, respectively. After CIDR removal, all ewes were bred by a ram and embryos were recovered surgically 7 days later. Transrectal ovarian ultrasonography was performed the day before and on all 4 days of the superovulatory treatment. Both an arbitrary-scale [(0) non-detectable; (1) small; (2) moderate; (3) intense blood flow] and quantitative analysis of the blood flow area were used to assess the follicular blood flow in color Doppler images. There were no significant correlations between the arbitrary blood flow scores and superovulatory responses in the ewes of the present study. However, there was a positive correlation between the quantitative estimates of follicular blood flow on the final day of the superovulatory treatment, and the number (DA: r = 0.68, P < 0.05; DA/TA × 100%: r = 0.85, P < 0.05) and percentage (DA: r = 0.65, P < 0.05; DA/TA × 100%: r = 0.91, P < 0.001) of unfertilized eggs (DA: Doppler area, TA: total area of the largest ovarian cross section). This experiment presents a commercially practical tool for predicting superovulatory outcomes in ewes and evidence for the existence of follicular blood flow threshold that may impinge negatively on oocyte quality when surpassed during hormonal ovarian superstimulation. MenosAbstract: The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0?6, Group 1) and five to a long-term progesterone-based protocol (Days 0?12, Group 2) to synchronize estrus and ovulations after the superovulatory treatment. Porcine FSH (pFSH, 200 mg) was administered in 8 decreasing doses over 4 days, starting on Days 4 and 10 in Groups 1 and 2, respectively. After CIDR removal, all ewes were bred by a ram and embryos were recovered surgically 7 days later. Transrectal ovarian ultrasonography was performed the day before and on all 4 days of the superovulatory treatment. Both an arbitrary-scale [(0) non-detectable; (1) small; (2) moderate; (3) intense blood flow] and quantitative analysis of the blood flow area were used to assess the follicular blood flow in color Doppler images. There were no significant correlations between the arbitrary blood flow scores and superovulatory responses in the ewes of the present study. However, there was a positive correlation between the quantitative estimates of follicular blood flow on the final day of the superovulatory treatment, and the number (DA: r = 0.68, P < 0.05; DA/TA × 100%: r = 0.85, P < 0.05) and percentage (DA: r = 0.65, P < 0.05; DA/TA × 100%: r = 0.91, P < 0.001) of unfertilized eggs (DA: Doppler area, TA: t... Mostrar Tudo |
Palavras-Chave: |
Antral follicles; Color Doppler sonography. |
Thesagro: |
Ovário; Ovelha; Ovino; Reprodução animal; Superovulação. |
Thesaurus Nal: |
Blood circulation; Ewes; Reproduction; Sheep; Superovulation. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/110557/1/ap-Correlations.pdf
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Marc: |
LEADER 02851naa a2200361 a 4500 001 1998372 005 2014-10-27 008 2014 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, M. E. F. 245 $aCorrelations between ovarian follicular blood flow and superovulatory responses in ewes.$h[electronic resource] 260 $c2014 520 $aAbstract: The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0?6, Group 1) and five to a long-term progesterone-based protocol (Days 0?12, Group 2) to synchronize estrus and ovulations after the superovulatory treatment. Porcine FSH (pFSH, 200 mg) was administered in 8 decreasing doses over 4 days, starting on Days 4 and 10 in Groups 1 and 2, respectively. After CIDR removal, all ewes were bred by a ram and embryos were recovered surgically 7 days later. Transrectal ovarian ultrasonography was performed the day before and on all 4 days of the superovulatory treatment. Both an arbitrary-scale [(0) non-detectable; (1) small; (2) moderate; (3) intense blood flow] and quantitative analysis of the blood flow area were used to assess the follicular blood flow in color Doppler images. There were no significant correlations between the arbitrary blood flow scores and superovulatory responses in the ewes of the present study. However, there was a positive correlation between the quantitative estimates of follicular blood flow on the final day of the superovulatory treatment, and the number (DA: r = 0.68, P < 0.05; DA/TA × 100%: r = 0.85, P < 0.05) and percentage (DA: r = 0.65, P < 0.05; DA/TA × 100%: r = 0.91, P < 0.001) of unfertilized eggs (DA: Doppler area, TA: total area of the largest ovarian cross section). This experiment presents a commercially practical tool for predicting superovulatory outcomes in ewes and evidence for the existence of follicular blood flow threshold that may impinge negatively on oocyte quality when surpassed during hormonal ovarian superstimulation. 650 $aBlood circulation 650 $aEwes 650 $aReproduction 650 $aSheep 650 $aSuperovulation 650 $aOvário 650 $aOvelha 650 $aOvino 650 $aReprodução animal 650 $aSuperovulação 653 $aAntral follicles 653 $aColor Doppler sonography 700 1 $aFELICIANO, M. A. R. 700 1 $aD'AMATO, C. C. 700 1 $aOLIVEIRA, L. G. 700 1 $aBICUDO, S. D. 700 1 $aFONSECA, J. F. da 700 1 $aVICENTE, W. R. R. 700 1 $aVISCO, E. 700 1 $aBARTLEWSKID, P. M. 773 $tAnimal Reproduction Science, Champaign$gv. 144, n. 1/2, p. 30-37, Jan. 2014.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
30/01/2008 |
Data da última atualização: |
30/01/2008 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Circulação/Nível: |
-- - -- |
Autoria: |
LIMA, J. E. F. W.; SILVA, E. M. da. |
Afiliação: |
Jorge Enoch Furquim Werneck Lima, CPAC; Euzébio Medrado da Silva, CPAC. |
Título: |
Estimativa da contribuição hídrica superficial do Cerrado para as grandes regiões hidrográficas brasileiras. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE RECURSOS HÍDRICOS, 7., 2007, São Paulo. Anais... São Paulo: [s.n.], 2007. |
Idioma: |
Português |
Palavras-Chave: |
Geoprocessamento. |
Thesagro: |
Gestão; Recurso Hídrico. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00550naa a2200157 a 4500 001 1570574 005 2008-01-30 008 2007 bl uuuu u00u1 u #d 100 1 $aLIMA, J. E. F. W. 245 $aEstimativa da contribuição hídrica superficial do Cerrado para as grandes regiões hidrográficas brasileiras. 260 $c2007 650 $aGestão 650 $aRecurso Hídrico 653 $aGeoprocessamento 700 1 $aSILVA, E. M. da 773 $tIn: SIMPÓSIO BRASILEIRO DE RECURSOS HÍDRICOS, 7., 2007, São Paulo. Anais... São Paulo: [s.n.], 2007.
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