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| 1. |  | ARAÚJO, M. I.; SOUSA, S. G. A. de; RAMOS, E. de M.; MENEZES, M. A. O. de. Aspectos da produção agrosilvicultural e agroextrativista na Hinterlândia Amazônica. Pesquisa Florestal Brasileira, Colombo, v. 39, (nesp), e201902043, 2019. p. 160-161. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.| Biblioteca(s): Embrapa Amazônia Ocidental. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
27/11/2020 |
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Data da última atualização: |
27/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
VERGANI, G. B.; FONSECA, J. F. da; TREVIZAN, J. T.; PEREIRA, V. S. do A.; GARCIA, A. R.; BRANDÃO. F. Z.; SOUZA-FABJAN, J. M. G.; OLIVEIRA, M. E. F. |
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Afiliação: |
GABRIEL BRUN VERGANI, UNESP; JEFERSON FERREIRA DA FONSECA, CNPC; JULIANE TERAMACHI TREVIZAN, UNESP; VERONICA SCHINAIDER DO A PEREIRA, CPPSE; ALEXANDRE ROSSETTO GARCIA, CPPSE; FELIPE ZANDONADI BRANDÃO, UFF; JOANNA MARIA GONÇALVES SOUZA-FABJAN, UFF; MARIA EMILIA FRANCO OLIVEIRA, UNESP. |
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Título: |
Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 223, article 106644, Dec. 2020. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2020.106644 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Accessory corpora lutea; HCG; Luteal vascularization; Oestrous cycle; Ovarian ultrasonography. |
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Thesagro: |
Ciclo Estral; Corpo Lúteo; Ovino; Progesterona; Reprodução Animal. |
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Thesaurus NAL: |
Animal reproduction; Estrous cycle; Progesterone; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
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001 2127133
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008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2020.106644$2DOI
100 1 $aVERGANI, G. B.
245 $aLuteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes.$h[electronic resource]
260 $c2020
520 $aAbstract: 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.
650 $aAnimal reproduction
650 $aEstrous cycle
650 $aProgesterone
650 $aSheep
650 $aCiclo Estral
650 $aCorpo Lúteo
650 $aOvino
650 $aProgesterona
650 $aReprodução Animal
653 $aAccessory corpora lutea
653 $aHCG
653 $aLuteal vascularization
653 $aOestrous cycle
653 $aOvarian ultrasonography
700 1 $aFONSECA, J. F. da
700 1 $aTREVIZAN, J. T.
700 1 $aPEREIRA, V. S. do A.
700 1 $aGARCIA, A. R.
700 1 $aBRANDÃO. F. Z.
700 1 $aSOUZA-FABJAN, J. M. G.
700 1 $aOLIVEIRA, M. E. F.
773 $tAnimal Reproduction Science$gv. 223, article 106644, Dec. 2020.
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