| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
13/11/2020 |
|
Data da última atualização: |
13/11/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
VERGANI, G. B.; FONSECA, J. F. da; TREVIZAN, J. T.; PEREIRA, V. S. do A.; GARCIA, A. R.; GARCIA, A. R.; BRANDÃO. F. Z.; SOUZA-FABJAN, J. M. G.; OLIVEIRA, M. E. F. |
|
Afiliação: |
GABRIEL BRUN VERGANI; JEFERSON FERREIRA DA FONSECA, CNPC; JULIANE TERAMACHI TREVIZAN; VERONICA SCHINAIDER DO A PEREIRA, CPPSE; ALEXANDRE ROSSETTO GARCIA, CPPSE; ALEXANDRE ROSSETTO GARCIA; FELIPE ZANDONADI BRANDÃO; JOANNA MARIA GONÇALVES SOUZA-FABJAN; MARIA EMILIA FRANCO OLIVEIRA. |
|
Título: |
Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Animal Reproduction Science, v. 223, article 106644, Dec. 2020. |
|
DOI: |
https://doi.org/10.1016/j.anireprosci.2020.106644 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: This 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 gonadotropin (eCG) im and 37.5 ?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 (P4) 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. MenosAbstract: This 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 gonadotropin (eCG) im and 37.5 ?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 (P4) 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 enhanc... Mostrar Tudo |
|
Palavras-Chave: |
Accessory corpora lutea; HCG; Luteal vascularization; Oestrous cycle; Ovarian ultrasonography. |
|
Thesagro: |
Ciclo Estral; Corpo Lúteo; Ovino; Progesterona; Reprodução Animal. |
|
Thesaurus Nal: |
Animal reproduction; Estrous cycle; Progesterone; Sheep. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
null
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 6 | |
| 3. |  | GARCIA, L. C.; PRESTES, D. C. V.; SOUSA, S. G. A. D. Comportamento de sementes de cumaru (Dipteryx odorata - Fabaceae), submetidas à dessecação. Informativo ABRATES, Curitiba, v. 23, n. 2, set. 2015. Número especial, ref. 343. Resumo apresentado no XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
|    |
| Registros recuperados : 6 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
