Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/998372
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dc.contributor.authorOLIVEIRA, M. E. F.pt_BR
dc.contributor.authorFELICIANO, M. A. R.pt_BR
dc.contributor.authorD'AMATO, C. C.pt_BR
dc.contributor.authorOLIVEIRA, L. G.pt_BR
dc.contributor.authorBICUDO, S. D.pt_BR
dc.contributor.authorFONSECA, J. F. dapt_BR
dc.contributor.authorVICENTE, W. R. R.pt_BR
dc.contributor.authorVISCO, E.pt_BR
dc.contributor.authorBARTLEWSKID, P. M.pt_BR
dc.date.accessioned2014-10-24T11:11:11Zpt_BR
dc.date.available2014-10-24T11:11:11Zpt_BR
dc.date.created2014-10-24pt_BR
dc.date.issued2014pt_BR
dc.identifier.citationAnimal Reproduction Science, Champaign, v. 144, n. 1/2, p. 30-37, Jan. 2014.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/998372pt_BR
dc.descriptionAbstract: 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectColor Doppler sonography; Antral folliclespt_BR
dc.titleCorrelations between ovarian follicular blood flow and superovulatory responses in ewes.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2014-10-27T11:11:11Zpt_BR
dc.subject.thesagroOvinopt_BR
dc.subject.thesagroOvelhapt_BR
dc.subject.thesagroReprodução animalpt_BR
dc.subject.thesagroOváriopt_BR
dc.subject.thesagroSuperovulaçãopt_BR
dc.subject.nalthesaurusSheeppt_BR
dc.subject.nalthesaurusEwespt_BR
dc.subject.nalthesaurusSuperovulationpt_BR
dc.subject.nalthesaurusBlood circulationpt_BR
dc.subject.nalthesaurusReproductionpt_BR
riaa.ainfo.id998372pt_BR
riaa.ainfo.lastupdate2014-10-27pt_BR
dc.contributor.institutionMaria 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.pt_BR
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