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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
12/01/2021 |
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Data da última atualização: |
03/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CÔRTES, L. R.; SOUZA-FABJAN, J. M. G.; DIAS, D. S.; MARTINS, B. B.; MAIA, A. L. R. S.; VEIGA, M. O.; ARASHIRO, E. K. N.; BRANDÃO, F. Z.; OLIVEIRA, M. E. F.; BARTLEWSKI, P. M.; FONSECA, J. F. da. |
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Afiliação: |
JEFERSON FERREIRA DA FONSECA, CNPC. |
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Título: |
Administration of a single dose of 300 IU of human chorionic gonadotropin seven days after the onset of estrus improves pregnancy rate in dairy goats by an unknown mechanism. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 74, e106579, 2021. |
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DOI: |
10.1016/j.domaniend.2020.106579 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: This study examined the effects of exogenous hCG administration on ovarian function and pregnancy rates in estrous-induced dairy goats during the transition into the breeding season. Eighty-six Toggenburg does received 60 mg of medroxyprogesterone acetate intravaginal sponge for 6 d plus 200 IU of equine chorionic gonadotropin and 30 ?g of d-cloprostenol i.m. 24 h before sponge removal, and were then bred for 96 h. Seven days (D7) after first mating the does received either 1 mL of saline (the control group, n = 43) or 300 IU of hCG (the hCG-treated group, n = 43) i.m. Transrectal ovarian ultrasonography (B-mode and color Doppler) was performed on D7, D13, D17, and D21 and ultrasonographic pregnancy detection on D30. Pregnancy rate was higher (P < 0.05) in hCG-treated goats (90.7%; 39/43) than that in control animals (74.4%; 32/43). Accessory luteal structures (ALSs) were detected in 46.5% (20/43) of hCG-treated does. All hCG-treated does that had ALSs and 82.6% of goats without ALS post-treatment remained pregnant. The total luteal area increased (P < 0.05) from D7 to D13 in pregnant animals of both groups, whereas mean vascular area declined (P < 0.05) by D21 in all nonpregnant does. Serum progesterone concentrations increased (P < 0.05) on D21 in pregnant goats of both groups, but they were related to changes in luteal tissue content only in control does throughout the present study. Mean daily numbers of small- and medium-sized antral follicles decreased (P < 0.05) only in pregnant animals of both groups with a decline in medium follicle numbers occurring earlier in hCG-treated (D13) compared with control does (D17). To summarize, a single dose of hCG given on D7 after estrus was followed by a decrease in the number of medium-sized antral follicles in gestating hCG-treated does, induced the formation of ALSs in ~47% of all hCG-treated does, and significantly increased the pregnancy rate in estrous-induced Toggenburg goats in the transition to the breeding season. MenosAbstract: This study examined the effects of exogenous hCG administration on ovarian function and pregnancy rates in estrous-induced dairy goats during the transition into the breeding season. Eighty-six Toggenburg does received 60 mg of medroxyprogesterone acetate intravaginal sponge for 6 d plus 200 IU of equine chorionic gonadotropin and 30 ?g of d-cloprostenol i.m. 24 h before sponge removal, and were then bred for 96 h. Seven days (D7) after first mating the does received either 1 mL of saline (the control group, n = 43) or 300 IU of hCG (the hCG-treated group, n = 43) i.m. Transrectal ovarian ultrasonography (B-mode and color Doppler) was performed on D7, D13, D17, and D21 and ultrasonographic pregnancy detection on D30. Pregnancy rate was higher (P < 0.05) in hCG-treated goats (90.7%; 39/43) than that in control animals (74.4%; 32/43). Accessory luteal structures (ALSs) were detected in 46.5% (20/43) of hCG-treated does. All hCG-treated does that had ALSs and 82.6% of goats without ALS post-treatment remained pregnant. The total luteal area increased (P < 0.05) from D7 to D13 in pregnant animals of both groups, whereas mean vascular area declined (P < 0.05) by D21 in all nonpregnant does. Serum progesterone concentrations increased (P < 0.05) on D21 in pregnant goats of both groups, but they were related to changes in luteal tissue content only in control does throughout the present study. Mean daily numbers of small- and medium-sized antral follicles decreased (P < 0... Mostrar Tudo |
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Palavras-Chave: |
Biotecnologia da reprodução; HCG; Ovary; Taxa de prenhez. |
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Thesagro: |
Cabra Leiteira; Caprino; Progesterona; Reprodução Animal; Sincronização do Cio; Ultrassom. |
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Thesaurus Nal: |
Anestrus; Dairy goats; Estrous cycle; Human chorionic gonadotropin; Progesterone; Small ruminants; Toggenburg; Ultrasonography. |
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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 2129228
005 2021-08-03
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1016/j.domaniend.2020.106579$2DOI
100 1 $aCÔRTES, L. R.
245 $aAdministration of a single dose of 300 IU of human chorionic gonadotropin seven days after the onset of estrus improves pregnancy rate in dairy goats by an unknown mechanism.$h[electronic resource]
260 $c2021
520 $aAbstract: This study examined the effects of exogenous hCG administration on ovarian function and pregnancy rates in estrous-induced dairy goats during the transition into the breeding season. Eighty-six Toggenburg does received 60 mg of medroxyprogesterone acetate intravaginal sponge for 6 d plus 200 IU of equine chorionic gonadotropin and 30 ?g of d-cloprostenol i.m. 24 h before sponge removal, and were then bred for 96 h. Seven days (D7) after first mating the does received either 1 mL of saline (the control group, n = 43) or 300 IU of hCG (the hCG-treated group, n = 43) i.m. Transrectal ovarian ultrasonography (B-mode and color Doppler) was performed on D7, D13, D17, and D21 and ultrasonographic pregnancy detection on D30. Pregnancy rate was higher (P < 0.05) in hCG-treated goats (90.7%; 39/43) than that in control animals (74.4%; 32/43). Accessory luteal structures (ALSs) were detected in 46.5% (20/43) of hCG-treated does. All hCG-treated does that had ALSs and 82.6% of goats without ALS post-treatment remained pregnant. The total luteal area increased (P < 0.05) from D7 to D13 in pregnant animals of both groups, whereas mean vascular area declined (P < 0.05) by D21 in all nonpregnant does. Serum progesterone concentrations increased (P < 0.05) on D21 in pregnant goats of both groups, but they were related to changes in luteal tissue content only in control does throughout the present study. Mean daily numbers of small- and medium-sized antral follicles decreased (P < 0.05) only in pregnant animals of both groups with a decline in medium follicle numbers occurring earlier in hCG-treated (D13) compared with control does (D17). To summarize, a single dose of hCG given on D7 after estrus was followed by a decrease in the number of medium-sized antral follicles in gestating hCG-treated does, induced the formation of ALSs in ~47% of all hCG-treated does, and significantly increased the pregnancy rate in estrous-induced Toggenburg goats in the transition to the breeding season.
650 $aAnestrus
650 $aDairy goats
650 $aEstrous cycle
650 $aHuman chorionic gonadotropin
650 $aProgesterone
650 $aSmall ruminants
650 $aToggenburg
650 $aUltrasonography
650 $aCabra Leiteira
650 $aCaprino
650 $aProgesterona
650 $aReprodução Animal
650 $aSincronização do Cio
650 $aUltrassom
653 $aBiotecnologia da reprodução
653 $aHCG
653 $aOvary
653 $aTaxa de prenhez
700 1 $aSOUZA-FABJAN, J. M. G.
700 1 $aDIAS, D. S.
700 1 $aMARTINS, B. B.
700 1 $aMAIA, A. L. R. S.
700 1 $aVEIGA, M. O.
700 1 $aARASHIRO, E. K. N.
700 1 $aBRANDÃO, F. Z.
700 1 $aOLIVEIRA, M. E. F.
700 1 $aBARTLEWSKI, P. M.
700 1 $aFONSECA, J. F. da
773 $tDomestic Animal Endocrinology$gv. 74, e106579, 2021.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 164 | |
| 1. |  | DALL'AGNOL, A. Alimentos X bioenergia. In: CUNHA, G. R.(Ed.). Agroenergia: o futuro que chegou. Passo Fundo: O Nacional, 2007. p. 26.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Soja. |
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| 5. | | DALL'AGNOL, A. Anti-rust consortium. In: JULIATTI, F. C. (org.). Soybean asian rust: etiology, epidemiology and management. Uberlândia: EDUFU, 2006. p. 11-22.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Soja. |
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| 9. | | DALL'AGNOL, A. Consórcio anti-ferrugem. In: WORKSHOP BRASILEIRO SOBRE A FERRUGEM ASIÁTICA, 1.; 2005, Uberlândia. Coletânea. Uberlândia: EDUFU, 2005. p. 11-20. Organizado por Fernando César Juliatti, Analy Castilho Polizel, Osvaldo Toshyiuki Hamawaki.| Biblioteca(s): Embrapa Soja. |
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| 11. | | DALL'AGNOL, A. Consórcio anti-ferrugem: relato das ações desenvolvidas. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 27., 2005, Cornélio Procópio. Ata... Londrina: Embrapa Soja, 2005. p. 192-200. (Embrapa Soja. Documentos, 265). Organizado por Odilon Ferreira Saraiva, Cesar de Castro, Janete Lasso Ortiz, Simone Ery Grosskopf.| Biblioteca(s): Embrapa Soja. |
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| 12. | | DALL'AGNOL, A. El consorcio anti-roya de Brasil. In: PLOPER, L.D. (Ed.). Roya asiática de la soja en América. El libro. Las Talitas, Tucumán: Estación Experimental Agroindustrial "Obispo Colombres": BASF, 2006. p.107-110.| Biblioteca(s): Embrapa Soja. |
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| 14. | | DALL'AGNOL, A. Fonte de competitividade. Agroanalysis, Rio de Janeiro, v. 22, n. 9. p. 40-41, nov. 2002.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Soja. |
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| 16. | | DALL'AGNOL, A. Um tiro no pé. Disponível em: <http://www.andef.com.br/2003/opiniao.asp?numero=79>. Acesso em: 29 out. 2007. 1 p.| Biblioteca(s): Embrapa Soja. |
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| 19. | | DALL'AGNOL, A. Sem medo de competir. Agroanalysis, Rio de Janeiro, v. 22, n. 2, p. 42-43, fev. 2002.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 164 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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