| |
|
|
 | 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: |
09/06/2016 |
|
Data da última atualização: |
10/01/2025 |
|
Tipo da produção científica: |
Nota Técnica/Nota Científica |
|
Autoria: |
BALARO, M. F. A.; FONSECA, J. F. da; BARBOSA, T. G. B.; SOUZA-FABJAN, J. M. G.; FIGUEIRA, L. M.; TEIXEIRA, T. A.; CARVALHEIRA, L. R.; BRANDÃO, F. Z. |
|
Afiliação: |
FLUMINENSE FEDERAL UNIVERSITY; JEFERSON FERREIRA DA FONSECA, CNPC; FLUMINENSE FEDERAL UNIVERSITY; FLUMINENSE FEDERAL UNIVERSITY; FLUMINENSE FEDERAL UNIVERSITY; FLUMINENSE FEDERAL UNIVERSITY; FLUMINENSE FEDERAL UNIVERSITY; FLUMINENSE FEDERAL UNIVERSITY. |
|
Título: |
Potential role for GnRH in the synchronization of follicular emergence before the superovulatory Day 0 protocol. |
|
Ano de publicação: |
2016 |
|
Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 54, p. 10-14, Jan. 2016. |
|
DOI: |
10.1016/j.domaniend.2015.07.002 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: The ability of gonadotropin-releasing hormone (GnRH) to synchronize ovulation and new follicular wave emergence before a "superovulatory Day 0" protocol was assessed in Santa Inês ewes. For estrus synchronization, a 60-mg medroxyprogesterone acetate sponge was inserted for 6 d. One day before sponge removal, 37.5-ug d-cloprostenol and 300 IU equine chorionic gonadotropin were injected intramuscularly (i.m.). After sponge removal, ewes were assigned to the following 3 groups: (1) GC-1 mL saline at 12 h (n = 10); (2) G24h-0.025-mg lecirelin (GnRH agonist) i.m. at 24 h (n = 10); or (3) G36h-0.025-mg lecirelin i.m. at 36 h (n = 9). Ovarian ultrasonography was conducted to assess follicular dynamics. Blood was collected to determine plasma concentrations of progesterone and estradiol. Females from G36h and GC had a greater (P < 0.05) estrous response than those from the G24h group (78.0 and 90.0 vs 0.0%, respectively). Ewes from G24h and G36h had earlier (P < 0.05) ovulation (48.0 ± 10.2 and 56.7 ± 5.7 h) compared with those from Gc (64.1 ± 9.7 h). The mean number of ovulations per ewe was greater (P < 0.05) in Gc (1.9 ± 0.6) and G36h (2.0 ± 1.0) than G24h (1.2 ± 0.4). Plasma concentrations of progesterone and estradiol differed over time. Follicular growth during the postovulatory day was affected (P < 0.05) by day of the estrus cycle as well as by the interaction (P < 0.05) of treatment and day of the estrus cycle. There was a larger (P < 0.05) population of medium follicles during the first 24 h after the ovulation in G24h compared with Gc, and there was an absence of large follicles in G36h between 36 and 72 h after ovulation. In conclusion, the use of GnRH agonist at 36 h more efficiently synchronized ovulation and promoted the absence of dominant follicles during early diestrus and may be used at the start of superovulatory treatment at 80 h in Santa Inês ewes. MenosAbstract: The ability of gonadotropin-releasing hormone (GnRH) to synchronize ovulation and new follicular wave emergence before a "superovulatory Day 0" protocol was assessed in Santa Inês ewes. For estrus synchronization, a 60-mg medroxyprogesterone acetate sponge was inserted for 6 d. One day before sponge removal, 37.5-ug d-cloprostenol and 300 IU equine chorionic gonadotropin were injected intramuscularly (i.m.). After sponge removal, ewes were assigned to the following 3 groups: (1) GC-1 mL saline at 12 h (n = 10); (2) G24h-0.025-mg lecirelin (GnRH agonist) i.m. at 24 h (n = 10); or (3) G36h-0.025-mg lecirelin i.m. at 36 h (n = 9). Ovarian ultrasonography was conducted to assess follicular dynamics. Blood was collected to determine plasma concentrations of progesterone and estradiol. Females from G36h and GC had a greater (P < 0.05) estrous response than those from the G24h group (78.0 and 90.0 vs 0.0%, respectively). Ewes from G24h and G36h had earlier (P < 0.05) ovulation (48.0 ± 10.2 and 56.7 ± 5.7 h) compared with those from Gc (64.1 ± 9.7 h). The mean number of ovulations per ewe was greater (P < 0.05) in Gc (1.9 ± 0.6) and G36h (2.0 ± 1.0) than G24h (1.2 ± 0.4). Plasma concentrations of progesterone and estradiol differed over time. Follicular growth during the postovulatory day was affected (P < 0.05) by day of the estrus cycle as well as by the interaction (P < 0.05) of treatment and day of the estrus cycle. There was a larger (P < 0.05) population of medium fo... Mostrar Tudo |
|
Palavras-Chave: |
GnRH; Medroxyprogesterone acetate; MOET; Oestrus synchronization; Raça Santa Inês. |
|
Thesagro: |
Ciclo estral; Estradiol; Hormônio animal; Ovino; Ovulação; Progesterona; Sincronização do cio. |
|
Thesaurus Nal: |
Ovarian follicles; Ovulation; Progesterone; Sheep; Ultrasonography. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 03143naa a2200421 a 4500
001 2046656
005 2025-01-10
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1016/j.domaniend.2015.07.002$2DOI
100 1 $aBALARO, M. F. A.
245 $aPotential role for GnRH in the synchronization of follicular emergence before the superovulatory Day 0 protocol.$h[electronic resource]
260 $c2016
520 $aAbstract: The ability of gonadotropin-releasing hormone (GnRH) to synchronize ovulation and new follicular wave emergence before a "superovulatory Day 0" protocol was assessed in Santa Inês ewes. For estrus synchronization, a 60-mg medroxyprogesterone acetate sponge was inserted for 6 d. One day before sponge removal, 37.5-ug d-cloprostenol and 300 IU equine chorionic gonadotropin were injected intramuscularly (i.m.). After sponge removal, ewes were assigned to the following 3 groups: (1) GC-1 mL saline at 12 h (n = 10); (2) G24h-0.025-mg lecirelin (GnRH agonist) i.m. at 24 h (n = 10); or (3) G36h-0.025-mg lecirelin i.m. at 36 h (n = 9). Ovarian ultrasonography was conducted to assess follicular dynamics. Blood was collected to determine plasma concentrations of progesterone and estradiol. Females from G36h and GC had a greater (P < 0.05) estrous response than those from the G24h group (78.0 and 90.0 vs 0.0%, respectively). Ewes from G24h and G36h had earlier (P < 0.05) ovulation (48.0 ± 10.2 and 56.7 ± 5.7 h) compared with those from Gc (64.1 ± 9.7 h). The mean number of ovulations per ewe was greater (P < 0.05) in Gc (1.9 ± 0.6) and G36h (2.0 ± 1.0) than G24h (1.2 ± 0.4). Plasma concentrations of progesterone and estradiol differed over time. Follicular growth during the postovulatory day was affected (P < 0.05) by day of the estrus cycle as well as by the interaction (P < 0.05) of treatment and day of the estrus cycle. There was a larger (P < 0.05) population of medium follicles during the first 24 h after the ovulation in G24h compared with Gc, and there was an absence of large follicles in G36h between 36 and 72 h after ovulation. In conclusion, the use of GnRH agonist at 36 h more efficiently synchronized ovulation and promoted the absence of dominant follicles during early diestrus and may be used at the start of superovulatory treatment at 80 h in Santa Inês ewes.
650 $aOvarian follicles
650 $aOvulation
650 $aProgesterone
650 $aSheep
650 $aUltrasonography
650 $aCiclo estral
650 $aEstradiol
650 $aHormônio animal
650 $aOvino
650 $aOvulação
650 $aProgesterona
650 $aSincronização do cio
653 $aGnRH
653 $aMedroxyprogesterone acetate
653 $aMOET
653 $aOestrus synchronization
653 $aRaça Santa Inês
700 1 $aFONSECA, J. F. da
700 1 $aBARBOSA, T. G. B.
700 1 $aSOUZA-FABJAN, J. M. G.
700 1 $aFIGUEIRA, L. M.
700 1 $aTEIXEIRA, T. A.
700 1 $aCARVALHEIRA, L. R.
700 1 $aBRANDÃO, F. Z.
773 $tDomestic Animal Endocrinology$gv. 54, p. 10-14, Jan. 2016.
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 : 9 | |
| 1. |  | MACÊDO, C. E. C. de; NÓBREGA, F. S. da; MARTINS, C. P.; LOPES, D. B.; ALLOUFA, M. A. I. Determinação de doses de NaCl para a realização de seleção in vitro de plantas de abacaxizeiro mais tolerantes à salinidade. In: CONGRESSO BRASILEIRO DE FRUTICULTURA., 17., 2002, Belém, PA. Anais... Belém, PA: SBF, 2002. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
|    |
| 2. | | MARTINS, C. P.; NÓBREGA, F. S. da; ALLOUFA, M. A. I.; BARROSO, P. A. V.; LOPES, D. B.; MACEDO, C. E. C. de. Cultivo hidropônico de plântulas de abacaxizeiro (Ananas comosus (L.) Merril) obtidas in vitro. In: CONGRESSO BRASILEIRO DE FRUTICULTURA., 17., 2002, Belém, PA. Anais... Belém, PA: SBF, 2002. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 3. | | MELO, Y. L.; CARVALHO, A. C. P. P. de; BRITO, L. K. F. L. de; CORREIA, W. K. de A. M.; MACEDO, C. E. C. de. Cultivo in vitro da variedade Gold submetida a diferentes níveis de NaCl. In: CONGRESSO NACIONAL DE BOTÂNICA, 59.; REUNIÃO NORDESTINA DE BOTÂNICA, 31.; CONGRESSO LATINO AMERICANO Y DEL CARIBE DE CACTÁCEAS Y OTRAS SUCULENTAS, 4.; CONGRESS OF INTERNATIONAL ORGANIZATION FOR SUCULENT PLANT STUDY, 30., 2008, Natal. Atualidades, desafios e perspectivas da botânica no Brasil: anais. Natal: UFERSA: UFRN: SBB, 2008.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
| |
| 4. | | SANTOS, A. P. A. dos; STEDILE, P. de C.; DANTAS, C. V. S.; DÍAZ-LOPEZ, L.; MACÊDO, C. E. C. de; MELO, Y. L. Avaliação de resposta osmorregulatória do girassol ( HELIANTHUS ANNUUS L.) ao estresse hídrico. In: CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 119| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
| |
| 5. | | MELO, Y. L.; DANTAS, C. V. S.; DÍAZ-LÓPEZ, L.; MAIA, J. M.; RODES, R.; VOIGT, E. L.; MACÊDO, C. E. C. de. Desempenho agronômico de genótipos de girassol quanto a marcadores fenológicos em duas microrregiões edafoclimáticas do Rio Grande do Norte. CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 367| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
| |
| 6. | | BRITO, L. K. F. L.; SILVEIRA, J. A. G.; LIMA, L. L. F. de; TIMÓTEO, A. R. de S.; CHAGAS, R. M.; MACEDO, C. E. C. de. Alterações no perfil de frações nitrogenadas em calos de cana-de-açúcar induzidas por déficit hídrico. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 6, p. 683-690, jun. 2008 Título em inglês: Alterations on the profile of nitrogenous fractions in sugarcane calluses induced by water deficit.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| 7. | | LIMA, S. de A. A. C.; MARTINS, C. P.; ALOUFFA, M. A. I.; BARROSO, P. A. V.; LOPES, D. B.; MACEDO, C. E. C. de. Formação de calos a partir de hipocótilos de mamoeiro submetidos a diferentes concentrações de 2, 4-D e sacarose. In: CONGRESSO BRASILEIRO DE FRUTICULTURA., 17., 2002, Belém, PA. Anais... Belém, PA: SBF, 2002. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 8. | | DÍAZ-LÓPEZ, L.; GIMENO, V.; GARCIA-SÁNCHEZ, F.; MELO, Y. L.; DANTAS, C. V. S.; RODES, R.; MACEDO, C. E. C. de; ORTEGA, E. Responses of JATROPHA CURCAS seedlings to drought stress and salinity. In: CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 183| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
| |
| 9. | | DANTAS, C. V. S.; MELO, Y. L.; BEZERRA, L. L.; DÍAZ-LOPEZ, L.; ORTEGA, E.; MAIA, J. M.; MACEDO, C. E. C. de. Resposta oxidativa de dois genótipos de girassol cultivados em duas microrregiões do Rio Grande do Norte. In: CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 184| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
| |
| Registros recuperados : 9 | |
|
| Expressão de busca inválida. Verifique!!! |
|
|
