Embryo yield and quality are associated with progestogen treatment during superovulation protocol in lactating Lacaune ewes

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorFigueira, Lucas Machado-
Autor(es): dc.creatorAlves, Nadja Gomes-
Autor(es): dc.creatorMaia, Ana Lucia Rosa e Silva-
Autor(es): dc.creatorSouza-Fabjan, Joanna Maria Gonçalves de-
Autor(es): dc.creatorBatista, Ribrio Ivan Tavares Pereira-
Autor(es): dc.creatorMorais, Maria Clara da Cruz-
Autor(es): dc.creatorLima, Renato Ribeiro de-
Autor(es): dc.creatorOliveira, Maria Emilia Franco-
Autor(es): dc.creatorFonseca, Jeferson Ferreira da-
Data de aceite: dc.date.accessioned2026-02-09T11:34:54Z-
Data de disponibilização: dc.date.available2026-02-09T11:34:54Z-
Data de envio: dc.date.issued2021-10-08-
Data de envio: dc.date.issued2021-10-08-
Data de envio: dc.date.issued2020-10-01-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br//handle/1/48357-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.theriogenology.2020.06.004-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1142835-
Descrição: dc.descriptionThis study assessed the effect of progestogen treatment length on ovarian parameters and embryo yield in superovulated Lacaune ewes collected by nonsurgical embryo recovery. Twenty-three lactating ewes were superovulated 30 d apart using a cross-over design. All ewes received 60 mg of MAP intravaginal sponges for 6 (G-6 group) or 9 (G-9 group) d. A total dose of 133 mg pFSH was given in six decreasing doses (twice a day) starting at 60 h before device removal. Ultrasound examination of the ovaries was performed at the first pFSH injection and one day before embryo recovery, which was performed 6–7 d after the onset of estrus. Embryo recovery was conducted only in ewes that expressed estrus and were mated. There was no difference (P > 0.05) in the total number of follicles between G-6 (15.7 ± 1.0) and G-9 (15.6 ± 0.8) at the time of the first pFSH treatment. The percentage of responding donors with ≥3 corpora lutea (CL; 78.2% [18/23] vs 69.5% [16/23]), mean (±SEM) CL number (7.0 ± 1.2 vs 8.1 ± 1.6), transcervical passage rate (94.4% [17/18] vs 83.3% [15/18], and ova/embryo recovery rate (54.5% [60/110] vs 68.0% [83/122]) were not different (P > 0.05) between the G-6 and G-9 groups. However, the mean number of viable embryos was lower (P < 0.05) in the G-6 group (1.8 ± 0.7) than in the G-9 group. (3.5 ± 1.1). In conclusion, treatment with an intravaginal MAP sponge for 9 d during a superovulation protocol is beneficial for viable embryo yield in Lacaune ewes out of the breeding season.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceTheriogenology-
Palavras-chave: dc.subjectSheep - Reproduction-
Palavras-chave: dc.subjectSuperovulation-
Palavras-chave: dc.subjectTranscervical-
Palavras-chave: dc.subjectUterine flushing-
Palavras-chave: dc.subjectOvelhas - Reprodução-
Palavras-chave: dc.subjectSuperovulação-
Palavras-chave: dc.subjectRubor uterino-
Título: dc.titleEmbryo yield and quality are associated with progestogen treatment during superovulation protocol in lactating Lacaune ewes-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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