Relationship of antral follicular blood flow velocity to superovulatory responses in ewes

dc.contributor.authorOliveira, M. E. F. [UNESP]
dc.contributor.authorBartlewski, P. M.
dc.contributor.authorJankowski, N.
dc.contributor.authorPadilha-Nakaghi, L. C. [UNESP]
dc.contributor.authorOliveira, L. G. [UNESP]
dc.contributor.authorBicudo, S. D. [UNESP]
dc.contributor.authorFonseca, J. F.
dc.contributor.authorVicente, W. R. R. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Guelph
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2018-11-26T17:35:02Z
dc.date.available2018-11-26T17:35:02Z
dc.date.issued2017-07-01
dc.description.abstractThe aim of this study was to examine the association between antral follicular blood flow velocity and the response of ewes to hormonal ovarian superstimulation. Ten Santa Ines ewes were subjected to a short- (7 days; Group 1) or long-term (13 days; Group 2) progesterone (CIDR.; InterAg, Hamilton, New Zealand) priming, and a superovulatory treatment with porcine follicle stimulating hormone (pFSH; Folltropin (R)-V; Bioniche Animal Health, Belleville, ON, Canada), given twice daily for four consecutive days in decreasing doses and initiated four or ten days after CIDR insertion, respectively. Embryos were recovered surgically seven days after the last pFSH dose. From one day prior to until the end of the pFSH regimen (Days 1 to 3), all ewes underwent daily transrectal ultrasonography of ovaries. The number of high-velocity pixels (HVPs; 0.055-0.11 m/s or upper 50% of recordable velocities) on Day 1 correlated directly with the number of corpora lutea (CL; r = 0.92, P = 0.0002) and of viable embryos (r = 0.77, P = 0.01). Correlations were also recorded between the number of HVPs on Day 3 and the recovery rate (r = -0.69, P = 0.03), viability rate (r = -0.64, P = 0.05), and percentage of degenerated embryos (r = 0.65, P = 0.04). The percentage of HVPs relative to the total area of ovarian cross section on Day 1 was correlated with the number of CL (r = 0.95, P < 0.001) and of viable embryos (r = 0.85, P = 0.002). This parameter on Day 3 was also correlated with the recovery rate (r = -0.69, P = 0.03). The percentage of HVPs relative to the total Doppler area on Day 0 was correlated with the recovery rate (r = 0.72, P = 0.02). It can be concluded that sonographic assessment of high-velocity antral follicular blood flow has the makings of a useful non-invasive method to predict the outcome of the superovulatory treatment in ewes.en
dc.description.affiliationSao Paulo State Univ, Dept Preventat Vet Med & Anim Reprod, Coll Agr & Vet Sci, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUniv Guelph, Dept Biomed Sci, Ontario Vet Coll, Guelph, ON N1G 2W1, Canada
dc.description.affiliationSao Paulo State Univ, Dept Clin & Vet Surg, Coll Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Fac Vet Med & Anim Sci, Dept Anim Reprod & Vet Radiol, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationBrazilian Agr Res Corp, Embrapa Goats & Sheep, BR-36155000 Coronel Pacheco, MG, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Preventat Vet Med & Anim Reprod, Coll Agr & Vet Sci, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Clin & Vet Surg, Coll Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Fac Vet Med & Anim Sci, Dept Anim Reprod & Vet Radiol, BR-18618970 Botucatu, SP, Brazil
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada
dc.description.sponsorshipDepartment of Biomedical Sciences, University of Guelph
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent48-55
dc.identifierhttp://dx.doi.org/10.1016/j.anireprosci.2017.04.009
dc.identifier.citationAnimal Reproduction Science. Amsterdam: Elsevier Science Bv, v. 182, p. 48-55, 2017.
dc.identifier.doi10.1016/j.anireprosci.2017.04.009
dc.identifier.fileWOS000404698700006.pdf
dc.identifier.fileWOS000404698700006.pdf
dc.identifier.issn0378-4320
dc.identifier.urihttp://hdl.handle.net/11449/162945
dc.identifier.wosWOS:000404698700006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofAnimal Reproduction Science
dc.relation.ispartofsjr0,704
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectSuperovulation
dc.subjectSheep
dc.subjectOvarian antral follicles
dc.subjectColor Doppler sonography
dc.subjectBlood flow velocity
dc.titleRelationship of antral follicular blood flow velocity to superovulatory responses in ewesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt
unesp.departmentClínica e Cirurgia Veterinária - FCAVpt
unesp.departmentMedicina Veterinária Preventiva e Reprodução Animal - FCAVpt
unesp.departmentReprodução Animal e Radiologia Veterinária - FMVZpt

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