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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
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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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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 5 | |
| 1. |  | MARTINS, B. B.; SOUZA-FABJAN, J. M. G.; DIÓGENES, Y. P.; OLIVEIRA, T. de A.; VIANA, J. H. M.; FONSECA, J. F. da. Cenário histórico da transferência de embriões de caprinos no Brasil: relatos técnicos científicos. Revista Brasileira de Reprodução Animal, v. 43, n. 2, p. 556, abr./jun. 2019. Edição dos resumos do XXIII Congresso Brasileiro de Reprodução Animal, Gramado, RS, Brasil, 15 a 17 de maio 2019.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 2. | | MARTINS, B. B.; SOUZA-FABJAN, J. M. G.; DIÓGENES, Y. P.; OLIVEIRA, T. de A.; VIANA, J. H. M.; FONSECA, J. F. da. Cenário histórico da transferência de embriões de caprinos no Brasil: relatos técnicos científicos. Revista Brasileira de Reprodução Animal, v. 43, n. 2, p. 556, abr./jun. 2019. Edição dos resumos do XXIII Congresso Brasileiro de Reprodução Animal, Gramado, RS, Brasil, 15 a 17 de maio 2019.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 3. | | CORTÊS, L. R.; FRAGA, M. O.; SILVA, D. S.; PRATES, J. F.; MARTINS, B. B.; FIGUEIRA, L. M.; BONATO, G. C.; ARRAIS, A. M.; SOUZA-FABJAN, J. M. G.; BRANDÃO, F. Z.; FONSECA, J. F. da. Administration of HCG seven days after estrous onset increases the pregnancy rate in Toggenburg goats subjected to induction of synchronized estrus and natural mating. Animal Reprodroduction, v. 15, n. 3, p. 366, Jul./Sept. 2018. Abstract A051. Edição dos Proceedings of the 32nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Florianópolis, SC, Brazil, August 16th to 18th, 2018.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 4. | | 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. 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. Domestic Animal Endocrinology, v. 74, e106579, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 5. | | DIAS, J. H.; CORTÊS, L. R.; BRANDÃO, F. Z.; BONATO, G. C.; SOUZA-FABJAN, J. M. G.; ARRAIS, A. M.; OLIVEIRA, T. A.; MARTINS, B. B.; FACO, O.; FONSECA, J. F. da. Intravaginal hCG administration increases pregnancy rate in artificially inseminated cyclic dairy goats subjected to estrous synchronization. Animal Reprodroduction, v. 15, n. 3, p. 364, Jul./Sept. 2018. Abstract A049. Edição dos Proceedings of the 32nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Florianópolis, SC, Brazil, August 16th to 18th, 2018.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 5 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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