Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes

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 Federal de Viçosa (UFV)-
Autor(es): dc.contributorUniversidade Federal Fluminense (UFF)-
Autor(es): dc.creatorVergani, Gabriel Brun [UNESP]-
Autor(es): dc.creatorFonseca, Jeferson Ferreira da-
Autor(es): dc.creatorTrevizan, Juliane Teramachi [UNESP]-
Autor(es): dc.creatorAmaral Pereira, Veronica Schinaider do-
Autor(es): dc.creatorGarcia, Alexandre Rossetto-
Autor(es): dc.creatorEsteves, Sergio Novita-
Autor(es): dc.creatorBrandao, Felipe Zandonadi-
Autor(es): dc.creatorGoncalves Souza-Fabjan, Joanna Maria-
Autor(es): dc.creatorFranco Oliveira, Maria Emilia [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:54:59Z-
Data de disponibilização: dc.date.available2022-02-22T00:54:59Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.anireprosci.2020.106644-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208960-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208960-
Descrição: dc.descriptionThis study was conducted in ewes to assess effects of human chorionic gonadotropin (hCG) administration after imposing an estrous induction treatment regimen. Ewes (n = 115) were treated with a 60 mg medroxyprogesterone-intravaginal-sponge for 6 d plus 200 IU of equine chorionic gonadotmpin (eCG) im and 37.5 mu g d-cloprostenol im 36 h before sponge removal (Day 0). After natural mating, ewes having at least one corpus luteum (CL; n = 108) were administered either 1 mL of saline (G-Control; n = 53) or 300 IU of hCG (G-hCG; n = 55) on Day 7.5 after sponge removal (Day 0). Ovarian ultrasonography and blood collection were performed on Days 7.5, 13.5, 17.5, 21.5, and 30.5. Accessory CL (aCL) were observed in 81.5 % (G-hCG) and 0.0 % (G-Control) of ewes (P = 0.0001). Diameter, area, and volume of luteal tissue were greater (P < 0.05) in G-hCG from Day 13.5 to 30.5. Progesterone (P-4) concentrations were greater (P < 0.05) on Days 13.5, 17.5, 21.5 and 30.5 for ewes of the G-hCG group. Pregnancy percentage was similar (P = 0.25) between groups [47.1 % (G-control) compared with 60.0 % (G-hCG)], although total number of lambs produced by estrous synchronized ewes was greater (P = 0.005) in ewes of the G-hCG group (90.9 % compared with 66.0 %). In conclusion, hCG administration 7.5 days after sponge removal from Morada Nova ewes during the non-breeding season is an effective treatment to induce aCL formation, improve luteal tissue biometry and P4 concentrations, and to enhance the total number of lambs born.-
Descrição: dc.descriptionEmbrapa-
Descrição: dc.descriptionSao Paulo State Univ, Sch Agr & Vet Sci, Dept Pathobiol & Vet Theriogenol, Jaboticabal, SP, Brazil-
Descrição: dc.descriptionEmbrapa Caprinos & Ovinos, Rodovia MG 133,Km 42, BR-36155000 Coronel Pacheco, MG, Brazil-
Descrição: dc.descriptionUniv Fed Vicosa, Dept Vet, Av Peter Henry Rolfs S-N, BR-36570000 Vicosa, MG, Brazil-
Descrição: dc.descriptionEmbrapa Pecuaria Sudeste, Rodovia Washington Luiz,Km 234 S-N, BR-13560970 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionUniv Fed Fluminense, Fac Vet, Rua Vital Brasil Filho 64, BR-24230340 Niteroi, RJ, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Sch Agr & Vet Sci, Dept Pathobiol & Vet Theriogenol, Jaboticabal, SP, Brazil-
Descrição: dc.descriptionEmbrapa: 22.13.06.026.00.06-
Formato: dc.format10-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationAnimal Reproduction Science-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectAccessory corpora lutea-
Palavras-chave: dc.subjecthCG-
Palavras-chave: dc.subjectLuteal vascularization-
Palavras-chave: dc.subjectLuteal blood flow-
Palavras-chave: dc.subjectOvarian ultrasonography-
Palavras-chave: dc.subjectProgesterone-
Título: dc.titleLuteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.