Comparison of superovulatory responses to a standardized hormonal superstimulation protocol among three indigenous breeds of sheep in Brazil

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade Estadual do Ceará-
Autor(es): dc.contributorUniversidade Federal do Vales dos Jequitinhonha e Mucuri-
Autor(es): dc.contributorUniversidade Federal Fluminense (UFF)-
Autor(es): dc.contributorUniversity of Guelph-
Autor(es): dc.creatorPupin, Maria Amélia Ferrão-
Autor(es): dc.creatorOliveira, Maria Emilia Franco-
Autor(es): dc.creatorVergani, Gabriel Brun-
Autor(es): dc.creatorLima, Monalisa Sousa Dias-
Autor(es): dc.creatorSilva, Kleibe de Moraes-
Autor(es): dc.creatorMonteiro, Alexandre Weick Uchôa-
Autor(es): dc.creatorRamos, Alexandre Floriani-
Autor(es): dc.creatorBatista, Ribrio Ivan Tavares Pereira-
Autor(es): dc.creatorSouza-Fabjan, Joanna Maria Gonçalves-
Autor(es): dc.creatorBartlewski, Pawel Mieczyslaw-
Autor(es): dc.creatorFonseca, Jeferson Ferreira-
Data de aceite: dc.date.accessioned2025-08-21T19:27:21Z-
Data de disponibilização: dc.date.available2025-08-21T19:27:21Z-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2022-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.smallrumres.2022.106703-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/240001-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/240001-
Descrição: dc.descriptionThis study examined the differences in ovarian responses and in vivo embryo production in three naturalized Brazilian sheep breeds (Morada Nova, Santa Inês, and Somalis Brasileira). Thirty cycling, multiparous ewes (n = 10/breed) received intravaginal devices containing 0.33 g of progesterone (CIDR®) for 9 days and the twice-daily superovulatory treatment with 133 mg of porcine follicle-stimulating hormone (six decreasing doses) started on Day 7 (Day 0 PM = CIDR® insertion). On Days 11 (36 h after CIDR® removal) and 15 (12 h before non-surgical embryo recovery performed seven days after CIDR® removal), all ewes were examined using B-mode and Doppler ultrasonography. The number of medium-sized ovarian follicles (4.0–5.99 mm) on Day 11 was greater (P = 0.003) in Santa Inês and Somalis Brasileira compared with Morada Nova ewes. Small antral follicle numbers (2.0–3.99 mm in diameter) on Day 11 were directly related to ovulatory responses in all three breeds of superovulated ewes. The number of corpora lutea on Day 15 was greater (P < 0.0001) in Santa Inês, followed by Somalis Brasileira and Morada Nova ewes; however, the number of viable embryos and viability rate did not differ (P > 0.05) among the three genotypes of ewes studied. The total ovarian area (TA), color Doppler area (DA), and DA/TA × 100% increased from Day 11 to Day 15 in all breeds, and they were lowest (P < 0.001) in superovulated Morada Nova sheep. Significant positive correlations among ovarian antral follicle numbers in different size classes (Day 11) and ovulatory responses were recorded in all breeds, but associations between the ovarian blood perfusion and superovulatory outcomes were restricted to the Morada Nova and Santa Inês genotypes. In summary, ovarian follicle numbers and blood flow indices differed among the three naturalized Brazilian ewes, but no significant differences were noted in embryo yields and quality following superovulation. Small antral follicle count 36 h after CIDR® treatment was a reliable predictor of impending ovulation rates in all ewes under study.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, SP-
Descrição: dc.descriptionEmbrapa Caprinos e Ovinos, CE-
Descrição: dc.descriptionUniversidade Estadual do Ceará, CE-
Descrição: dc.descriptionEmbrapa Recursos Genéticos e Biotecnologia, DF-
Descrição: dc.descriptionUniversidade Federal do Vales dos Jequitinhonha e Mucuri, MG-
Descrição: dc.descriptionUniversidade Federal Fluminense, RJ-
Descrição: dc.descriptionDepartment of Biomedical Sciences Ontario Veterinary College University of Guelph-
Descrição: dc.descriptionFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, SP-
Descrição: dc.descriptionFAPEMIG: 00201-17-
Idioma: dc.languageen-
Relação: dc.relationSmall Ruminant Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectColor Doppler-
Palavras-chave: dc.subjectCorpora lutea-
Palavras-chave: dc.subjectEwe-
Palavras-chave: dc.subjectOvarian antral follicles-
Palavras-chave: dc.subjectOvarian blood perfusion-
Palavras-chave: dc.subjectSuperovulation-
Título: dc.titleComparison of superovulatory responses to a standardized hormonal superstimulation protocol among three indigenous breeds of sheep in Brazil-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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