Study of the factors affecting embryo yields and quality in superovulated Morada Nova ewes that underwent non-surgical uterine flushing

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade Federal Rural do Rio de Janeiro-
Autor(es): dc.contributorUniversidade Federal Fluminense (UFF)-
Autor(es): dc.contributorUniversity of Guelph-
Autor(es): dc.creatorOliveira, Maria Emilia Franco-
Autor(es): dc.creatorArrais, Aline Matos-
Autor(es): dc.creatorde Mello, Marco Roberto Bourg-
Autor(es): dc.creatorVergani, Gabriel Brun-
Autor(es): dc.creatorFigueira, Lucas Machado-
Autor(es): dc.creatorEsteves, Sérgio Novita-
Autor(es): dc.creatorPereira, Verônica Schinaider do Amaral-
Autor(es): dc.creatorGarcia, Alexandre Rossetto-
Autor(es): dc.creatorBartlewski, Pawel Mieczyslaw-
Autor(es): dc.creatorda Fonseca, Jeferson Ferreira-
Data de aceite: dc.date.accessioned2025-08-21T22:26:54Z-
Data de disponibilização: dc.date.available2025-08-21T22:26:54Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/rda.14077-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/223243-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/223243-
Descrição: dc.descriptionThe present study compared the outcomes of in vivo embryo production in Morada Nova ewes subjected to either 9-day (G-9SOV, n = 21) or 12-day (G-12SOV, n = 21) progesterone (P4)-based estruses synchronization protocol coupled with superovulatory treatment with decreasing doses of porcine follicle-stimulating hormone (133 mg of pFSH given over 3 days). Non-surgical embryo recovery (NSER) was performed 6–7 days after the onset of oestrus. Total antral follicle count doubled from the first to the sixth pFSH dose in both groups (p <.05). Oestrus responses did not vary between the two groups of animals (95.2%). Corpora lutea (CL) were detected in 85.0% and 60.0% of ewes that previously manifested oestrus behaviour in G-9SOV and G-12SOV respectively. NSER was successfully completed in 86.2% of ewes that had CL (p >.05). The mean number of CL per ewe/successfully flushed donor ewe was greater (p <.05) in G-12SOV (12.3 ± 1.7/12.1 ± 1.9) than in G-9SOV (7.9 ± 1.4/8.2 ± 1.6). Mean numbers of retrieved blastocysts and viable embryos were greater (p >.05) in G-12SOV (5.8 ± 1.9 and 3.7 ± 1.7) than G-9SOV (3.5 ± 1.1 and 0.8 ± 0.3 respectively). The total follicle count (all follicles ≥2 mm in diameter) at the sixth pFSH dose (at P4-device removal) was positively correlated (p <.05) with the number of CL (r =.95) and viable embryos (r =.91) in G-12SOV. The ewes with ≥10 Cl (48% of all flushed donors) yielded 80.5% of viable embryos. In summary: (a) Morada Nova ewes from G-12SOV group had better superovulatory responses compared with G-9SOV group; (b) total follicle count at the last pFSH dose was a good predictor of superovulatory responses only in the ewes primed with P4 for 12 days; and (c) animals with ≥10 ovulations are main contributors to viable embryo production in Morada Nova ewes.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista-
Descrição: dc.descriptionEmbrapa Caprinos e Ovinos-
Descrição: dc.descriptionDepartamento de Reprodução e Avaliação Animal Universidade Federal Rural do Rio de Janeiro-
Descrição: dc.descriptionFaculdade de Veterinária Universidade Federal Fluminense-
Descrição: dc.descriptionEmbrapa Pecuária Sudeste-
Descrição: dc.descriptionDepartment of Biomedical Sciences Ontario Veterinary College University of Guelph-
Descrição: dc.descriptionFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista-
Descrição: dc.descriptionFAPEMIG: CVZ-PPM 00201-17-
Formato: dc.format393-401-
Idioma: dc.languageen-
Relação: dc.relationReproduction in Domestic Animals-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectin vivo embryo production-
Palavras-chave: dc.subjectnaturalized sheep breed-
Palavras-chave: dc.subjectnon-surgical embryo recovery-
Palavras-chave: dc.subjectNSER-
Palavras-chave: dc.subjectsuperovulation-
Título: dc.titleStudy of the factors affecting embryo yields and quality in superovulated Morada Nova ewes that underwent non-surgical uterine flushing-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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