Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/41299
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dc.creatorFigueira, Lucas Machado-
dc.creatorAlves, Nadja Gomes-
dc.creatorSouza-Fabjan, Joanna Maria Gonçalves-
dc.creatorOliveira, Maria Emilia Franco-
dc.creatorLima, Renato Ribeiro-
dc.creatorSouza, Guilherme Nunes-
dc.creatorFonseca, Jeferson Ferreira-
dc.date.accessioned2020-06-01T16:43:31Z-
dc.date.available2020-06-01T16:43:31Z-
dc.date.issued2019-03-
dc.identifier.citationFIGUEIRA, L. M. et al. Preovulatory follicular dynamics, ovulatory response and embryo yield in Lacaune ewes subjected to synchronous estrus induction protocols and non-surgical embryo recovery. Theriogenology, [S.I.], v. 145, p. 238-246, Mar. 2020.pt_BR
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0093691X19304984?via%3Dihub#!pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/41299-
dc.description.abstractThe objective of this study was to assess the effect of the duration of progesterone-based estrus induction protocols on preovulatory follicular dynamics, ovulatory response, and embryo yield after non-surgical embryo recovery (NSER) in Lacaune ewes. Females received acetate medroxyprogesterone intravaginal sponges for six (G-6; n = 14) or nine (G-9; n = 14) days plus d-cloprostenol and eCG 24 h before sponge removal (Day 0). Preovulatory follicular dynamics and the luteal characteristics are evaluated by B-mode and Color-Doppler ultrasonography. NSER was performed five to six days after ovulation. The estrous behavior rate was 85.7% for both groups, and the percentage of ewes that ovulated was 92.9% in G-6 and 100% in G-9. The day of wave emergence (relative to Day 0) did not differ (P > 0.05) between G-6 (−3.0 ± 0.5) and G-9 (−4.2 ± 0.5). The number of follicles of size 4.1–5.0 mm was higher (P < 0.05) in G-9 (1.4 ± 0.2) compared to G-6 (0.8 ± 0.2) during the Days −4 to 0. At NSER, the transcervical penetration rate was 95.2% (20/21) and its duration time was lower (P < 0.05) in G-9 (3.4 ± 0.6 min) than in G-6 (7.2 ± 1.3 min). The number of ovulations and viable embryos was higher (P < 0.05) in G-9 (2.9 ± 0.3 and 1.3 ± 0.4, respectively) than in G-6 (1.9 ± 0.3 and 0.4 ± 0.2, respectively). In conclusion, the 9-day protocol promoted higher ovulation rate and embryo yield; moreover, the cervical dilation treatment allowed NSER in a high percentage of Lacaune ewes.pt_BR
dc.languageenpt_BR
dc.publisherElsevier B.V.pt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceTheriogenologypt_BR
dc.subjectCervical dilationpt_BR
dc.subjectDairy sheeppt_BR
dc.subjectTranscervical embryo recoverypt_BR
dc.subjectUterine flushingpt_BR
dc.subjectDilatação cervicalpt_BR
dc.subjectOvelha leiteira - Embriõespt_BR
dc.subjectRecuperação transcervical de embriõespt_BR
dc.subjectRubor uterinopt_BR
dc.titlePreovulatory follicular dynamics, ovulatory response and embryo yield in Lacaune ewes subjected to synchronous estrus induction protocols and non-surgical embryo recoverypt_BR
dc.typeArtigopt_BR
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