|
|
![](/consulta/web/img/deny.png) | 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: |
23/08/2017 |
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: |
Department of Pathology and Veterinary Clinic, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC; Department of Pathology and Veterinary Clinic, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil; Department of Pathology and Veterinary Clinic, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil; Department of Animal Science, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil; Department of Pathology and Veterinary Clinic, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil; Department of Pathology and Veterinary Clinic, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil; Department of Pathology and Veterinary Clinic, Veterinary School, Fluminense Federal University (UFF) - Niteroi, RJ, Brazil. |
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, Stoneham, 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 03153naa a2200421 a 4500 001 2046656 005 2017-08-23 008 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 $tDomestic Animal Endocrinology, Stoneham$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
|
|
Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
11/03/2010 |
Data da última atualização: |
11/09/2012 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
MENDES, F. F.; RAMALHO, M. A. P.; ABREU, Â. de F. B.; REZENDE, B. A. |
Afiliação: |
FLÁVIA FERREIRA MENDES, doutoranda UFLA; MAGNO ANTONIO PATTO RAMALHO, UFLA; ANGELA DE FATIMA BARBOSA ABREU, CNPAF; BRENO ALVARENGA REZENDE, estudante UFLA. |
Título: |
Índice de seleção na escolha de populações segregantes de feijoeiro. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 5., 2009, Guarapari. O melhoramento e os novos cenários da agricultura: anais. Vitória: Incaper, 2009. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Conteúdo: |
O objetivo do trabalho foi verificar a viabilidade de um índice de seleção, obtido a partir do somatório das variáveis padronizadas, na avaliação da capacidade de combinação de genitores. |
Thesagro: |
Feijão; Melhoramento genético vegetal; Phaseolus vulgaris. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/66004/1/2248.pdf
|
Marc: |
LEADER 00861nam a2200193 a 4500 001 1660865 005 2012-09-11 008 2009 bl uuuu u00u1 u #d 100 1 $aMENDES, F. F. 245 $aÍndice de seleção na escolha de populações segregantes de feijoeiro. 260 $aIn: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 5., 2009, Guarapari. O melhoramento e os novos cenários da agricultura: anais. Vitória: Incaper$c2009 300 $c1 CD-ROM. 520 $aO objetivo do trabalho foi verificar a viabilidade de um índice de seleção, obtido a partir do somatório das variáveis padronizadas, na avaliação da capacidade de combinação de genitores. 650 $aFeijão 650 $aMelhoramento genético vegetal 650 $aPhaseolus vulgaris 700 1 $aRAMALHO, M. A. P. 700 1 $aABREU, Â. de F. B. 700 1 $aREZENDE, B. A.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|