Preovulatory follicular dynamics, ovulatory response and embryo yield in Lacaune ewes subjected to synchronous estrus induction protocols and non-surgical embryo recovery

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorFigueira, Lucas Machado-
Autor(es): dc.creatorAlves, Nadja Gomes-
Autor(es): dc.creatorSouza-Fabjan, Joanna Maria Gonçalves-
Autor(es): dc.creatorOliveira, Maria Emilia Franco-
Autor(es): dc.creatorLima, Renato Ribeiro-
Autor(es): dc.creatorSouza, Guilherme Nunes-
Autor(es): dc.creatorFonseca, Jeferson Ferreira-
Data de aceite: dc.date.accessioned2026-02-09T11:51:38Z-
Data de disponibilização: dc.date.available2026-02-09T11:51:38Z-
Data de envio: dc.date.issued2020-06-01-
Data de envio: dc.date.issued2020-06-01-
Data de envio: dc.date.issued2019-03-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br//handle/1/41299-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/abs/pii/S0093691X19304984?via%3Dihub#!-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1149044-
Descrição: dc.descriptionThe 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.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceTheriogenology-
Palavras-chave: dc.subjectCervical dilation-
Palavras-chave: dc.subjectDairy sheep-
Palavras-chave: dc.subjectTranscervical embryo recovery-
Palavras-chave: dc.subjectUterine flushing-
Palavras-chave: dc.subjectDilatação cervical-
Palavras-chave: dc.subjectOvelha leiteira - Embriões-
Palavras-chave: dc.subjectRecuperação transcervical de embriões-
Palavras-chave: dc.subjectRubor uterino-
Título: dc.titlePreovulatory follicular dynamics, ovulatory response and embryo yield in Lacaune ewes subjected to synchronous estrus induction protocols and non-surgical embryo recovery-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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