GnRH potential to synchronize follicular emergence and ovulation prior to superovulatory day 0 protocol in sheep.

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dc.contributorFluminense Federal University (UFF) - Niteroi, RJ, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC.
dc.creatorSOUZA-FABJAN, J. M. G.
dc.creatorBALARO, M. F. A.
dc.creatorBARBOSA, T. G. B.
dc.creatorFONSECA, J. F. da
dc.creatorFIGUEIRA, L. M.
dc.creatorTEIXEIRA, T. A.
dc.creatorCARVALHEIRA, L. R.
dc.creatorBRANDÃO, F. Z.
dc.date2017-08-25T19:09:18Z
dc.date2017-08-25T19:09:18Z
dc.date2017-08-23
dc.date2015
dc.date2019-09-23T11:11:11Z
dc.date.accessioned2026-07-01T00:20:36Z
dc.descriptionThe role of GnRH to synchronize ovulation and follicular emergence previous to superovulatory protocol, started on the first day of the estrous cycle (Day 0), was assessed in Santa Inês ewes. For estrus synchronization, 60 mg medroxyprogesterone acetate sponges were used for 6 d plus 37.5 ?g d-cloprostenol and 300 IU eCG at fifth day. After sponge removal, ewes were assigned to three treatments: GControl ? saline at 12 h (n = 10); G24h ? GnRH at 24 h (n = 10); or G36h ? GnRH at 36 h (n = 9). In conclusion, considering the beneficial effects of G36h in synchronizing ovulation and to promote the absence of dominant follicles in the first days of estrous cycle. According to data obtained, the best time to start the superovulatory treatment, known as "Day 0", could be 80 h after sponge removal (56 h for the occurrence of ovulation plus 24 h to reset dominant follicles), in the induction of synchronized estrus, for Santa Inês ewes.
dc.descriptionProceedings of the 29th Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Gramado, RS, Brazil, August 20th to 23rd, 2015, and 31st Meeting of the European Embryo Transfer Association (AETE); Ghent, Belgium, September 11th and 12th, 2015.
dc.identifierAnimal Reproduction, v. 12, n. 3, p. 712, Jul./Sept. 2015.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1074286
dc.identifier.urihttp://hdl.handle.net/123456789/402226
dc.languageeng
dc.rightsopenAccess
dc.subjectMOET
dc.subjectLecirelin
dc.subjectSanta Inês
dc.subjectOestrous cycle
dc.subjectSynchronization
dc.subjectOvino
dc.subjectReprodução animal
dc.subjectOvulação
dc.subjectCiclo estral
dc.subjectSuperovulação
dc.subjectProgesterona
dc.subjectEstradiol
dc.subjectSheep
dc.subjectEwes
dc.subjectReproduction
dc.subjectSuperovulation
dc.subjectOvulation
dc.subjectProgesterone
dc.titleGnRH potential to synchronize follicular emergence and ovulation prior to superovulatory day 0 protocol in sheep.
dc.typeResumo em anais e proceedings

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