Luteal tissue characteristics of Morada Nova ewes with hCG application 7.5 days after the end of estrus synchronization protocol in the breeding season

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Viçosa-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.creatorGonçalves, Joedson Dantas-
Autor(es): dc.creatorVergani, Gabriel Brun-
Autor(es): dc.creatorRodrigues, Juliana Nascimento Duarte-
Autor(es): dc.creatorDias, Jenniffer Hauschildt-
Autor(es): dc.creatorPereira, Verônica Schinaider do Amaral-
Autor(es): dc.creatorGarcia, Alexandre Rossetto-
Autor(es): dc.creatorEsteves, Sergio Novita-
Autor(es): dc.creatorFonseca, Jeferson Ferreira da-
Autor(es): dc.creatorOliveira, Maria Emilia Franco-
Data de aceite: dc.date.accessioned2025-08-21T21:31:46Z-
Data de disponibilização: dc.date.available2025-08-21T21:31:46Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.anireprosci.2023.107396-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/297217-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/297217-
Descrição: dc.descriptionResults with the use of hCG after synchronization protocol are still inconsistent, which may vary according to breed, season, day of application and dose of the drug used. The aim of the present study was to evaluate the functionality of luteal tissue and ovarian perfusion after hCG treatment during early luteal phase. Estrus-synchronized ewes were randomly assigned to receive i.m. injection of 300 IU of hCG (G-hCG; n = 40) or 1 mL of saline (G-Control; n = 32) on Day 7.5 after progesterone withdrawal. Ultrasonographic evaluations of the ovaries and ovarian and iliac arteries were performed on Days 7.5, 10.5, 13.5, and 21.5. The accessory corpus luteum (aCL) formation rate was 52.5% for G-hCG. There was interaction (p > 0.05) for treatment (G-hCG and G-Control), days (7.5, 10.5, 13.5 and 21.5) and PD (Pregnant and Non-pregnant) for the variables of biometric characteristics of the corpus luteum B-Mode and Color Doppler on days 7.5, 10.5, 13.5 and 21.5. There was no difference (p > 0.05) for pregnancy rates and mean fetuses per ewe between the treatment groups. It is concluded that the application of hCG 7.5 days after the hormonal protocol in Morada Nova ewes in a breeding season is efficient in inducing aCL formation and increasing luteal tissue biometry. However, there was no effect on pregnancy rate.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionEmpresa Brasileira de Pesquisa Agropecuária-
Descrição: dc.descriptionDepartment of Pathology Reproduction and One Health School of Agricultural and Veterinarian Sciences São Paulo State University, Via de acesso Prof. Paulo Donato Castellane, s/n, SP-
Descrição: dc.descriptionDepartment of Veterinary Medicine Federal University of Viçosa, Av. Peter Henry Rolfs, s/n, MG-
Descrição: dc.descriptionEmbrapa Southeast Livestock, Rod. Washington Luiz, km 234, SP-
Descrição: dc.descriptionEmbrapa Goats and Sheep, Estrada Sobral/Groaíras, km 04, CP 145, CE-
Descrição: dc.descriptionDepartment of Pathology Reproduction and One Health School of Agricultural and Veterinarian Sciences São Paulo State University, Via de acesso Prof. Paulo Donato Castellane, s/n, SP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionEmpresa Brasileira de Pesquisa Agropecuária: 3/20.22.03.004.00.01-
Idioma: dc.languageen-
Relação: dc.relationAnimal Reproduction Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAccessory corpora lutea-
Palavras-chave: dc.subjectArterial velocimetric indices-
Palavras-chave: dc.subjectLuteal color Doppler signs-
Palavras-chave: dc.subjectOvarian ultrasound-
Palavras-chave: dc.subjectSheep-
Título: dc.titleLuteal tissue characteristics of Morada Nova ewes with hCG application 7.5 days after the end of estrus synchronization protocol in the breeding season-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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