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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: |
10/03/2025 |
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Data da última atualização: |
04/09/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RODRIGUES, J. N. D.; GUIMARAES, J. D.; RANGEL, P. S. C.; OLIVEIRA, M. E. R.; BRANDAO, F. Z.; BARTLEWSKI, P. M.; FONSECA, J. F. da. |
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Afiliação: |
JULIANA NASCIMENTO DUARTE RODRIGUES, UNIVERSIDADE FEDERAL DE VIÇOSA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; JOSE DOMINGOS GUIMARAES, UNIVERSIDADE FEDERAL DE VIÇOSA; PAULO SERGIO CERQUEIRA RANGEL, UNIVERSIDADE FEDERAL DE VIÇOSA; MARIA EMILIA FRANCO OLIVEIRA, UNIVERSIDADE FEDERAL DE VIÇOSA; FELIPE ZANDONADI BRANDAO, UNIVERSIDADE FEDERAL FLUMINENSE; PAWEL MIECZYSLAW BARTLEWSKI, UNIVERSITY OF GUELPH; JEFERSON FERREIRA DA FONSECA, CNPC. |
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Título: |
Effects of hCG administered 5 or 7 days after the onset of induced estrus on luteal morphology and function in seasonally anovular dairy goats. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 275, 107818, Apr. 2025. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2025.107818 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective was to evaluate the effects of intramuscular (i.m.) human chorionic gonadotropin (hCG) administered on day 5 (D5) or day 7 (D7) after estrus (D0) on luteal structures (number, area, vascularization, and progesterone secretion) and pregnancy rates in estrus-induced dairy goats during the non-breeding season. Thirty-four Alpine goats received intravaginal sponges containing medroxyprogesterone acetate for 6 days and a single i.m. injection of 200 international units (IU) of equine chorionic gonadotropin (eCG) plus 37.5 micrograms (µg) of d-cloprostenol 24 hours before sponge removal. All exhibited estrus and were mated by fertile bucks. Goats were randomly assigned to hCG-5 (300 IU on D5; n = 12), hCG-7 (300 IU on D7; n = 11), or controls (n = 11). Transrectal ovarian ultrasonography and blood sampling were performed on D5, D7, D10, D13, D17, and D21, with pregnancy diagnosis on D60. hCG treatment did not affect pregnancy rates. Accessory corpora lutea (aCL) appeared in 66.6 % (hCG-5) and 90.9 % (hCG-7) (P > 0.05). Total luteal area in hCG-7 was greater (P < 0.05) than in controls from D10 to D21. The mean original corpora lutea (oCL) area in hCG-7 was largest (P < 0.05) on D10. High-velocity Doppler area (HVDA) of aCL was greater (P < 0.05) in hCG-5 compared with hCG-7 on D13. Plasma progesterone (P4) concentrations were higher (P < 0.05) in hCG-7 than in controls from D10 to D21. Although hCG administered on D5 or D7 transiently enhanced luteal function and vascularization, it did not improve pregnancy outcomes in seasonally anovular dairy goats. MenosAbstract: The objective was to evaluate the effects of intramuscular (i.m.) human chorionic gonadotropin (hCG) administered on day 5 (D5) or day 7 (D7) after estrus (D0) on luteal structures (number, area, vascularization, and progesterone secretion) and pregnancy rates in estrus-induced dairy goats during the non-breeding season. Thirty-four Alpine goats received intravaginal sponges containing medroxyprogesterone acetate for 6 days and a single i.m. injection of 200 international units (IU) of equine chorionic gonadotropin (eCG) plus 37.5 micrograms (µg) of d-cloprostenol 24 hours before sponge removal. All exhibited estrus and were mated by fertile bucks. Goats were randomly assigned to hCG-5 (300 IU on D5; n = 12), hCG-7 (300 IU on D7; n = 11), or controls (n = 11). Transrectal ovarian ultrasonography and blood sampling were performed on D5, D7, D10, D13, D17, and D21, with pregnancy diagnosis on D60. hCG treatment did not affect pregnancy rates. Accessory corpora lutea (aCL) appeared in 66.6 % (hCG-5) and 90.9 % (hCG-7) (P > 0.05). Total luteal area in hCG-7 was greater (P < 0.05) than in controls from D10 to D21. The mean original corpora lutea (oCL) area in hCG-7 was largest (P < 0.05) on D10. High-velocity Doppler area (HVDA) of aCL was greater (P < 0.05) in hCG-5 compared with hCG-7 on D13. Plasma progesterone (P4) concentrations were higher (P < 0.05) in hCG-7 than in controls from D10 to D21. Although hCG administered on D5 or D7 transiently enhanced luteal functi... Mostrar Tudo |
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Thesagro: |
Cabra Leiteira; Caprino; Corpo Lúteo; Prenhez; Progesterona; Reprodução; Sincronização do Cio; Taxa; Ultrassom. |
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Thesaurus Nal: |
Corpus luteum; Estrus synchronization; Goats; Human chorionic gonadotropin; Pregnancy rate; Progesterone; Reproduction; Ultrasonography. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02876naa a2200409 a 4500
001 2173716
005 2025-09-04
008 2025 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2025.107818$2DOI
100 1 $aRODRIGUES, J. N. D.
245 $aEffects of hCG administered 5 or 7 days after the onset of induced estrus on luteal morphology and function in seasonally anovular dairy goats.$h[electronic resource]
260 $c2025
520 $aAbstract: The objective was to evaluate the effects of intramuscular (i.m.) human chorionic gonadotropin (hCG) administered on day 5 (D5) or day 7 (D7) after estrus (D0) on luteal structures (number, area, vascularization, and progesterone secretion) and pregnancy rates in estrus-induced dairy goats during the non-breeding season. Thirty-four Alpine goats received intravaginal sponges containing medroxyprogesterone acetate for 6 days and a single i.m. injection of 200 international units (IU) of equine chorionic gonadotropin (eCG) plus 37.5 micrograms (µg) of d-cloprostenol 24 hours before sponge removal. All exhibited estrus and were mated by fertile bucks. Goats were randomly assigned to hCG-5 (300 IU on D5; n = 12), hCG-7 (300 IU on D7; n = 11), or controls (n = 11). Transrectal ovarian ultrasonography and blood sampling were performed on D5, D7, D10, D13, D17, and D21, with pregnancy diagnosis on D60. hCG treatment did not affect pregnancy rates. Accessory corpora lutea (aCL) appeared in 66.6 % (hCG-5) and 90.9 % (hCG-7) (P > 0.05). Total luteal area in hCG-7 was greater (P < 0.05) than in controls from D10 to D21. The mean original corpora lutea (oCL) area in hCG-7 was largest (P < 0.05) on D10. High-velocity Doppler area (HVDA) of aCL was greater (P < 0.05) in hCG-5 compared with hCG-7 on D13. Plasma progesterone (P4) concentrations were higher (P < 0.05) in hCG-7 than in controls from D10 to D21. Although hCG administered on D5 or D7 transiently enhanced luteal function and vascularization, it did not improve pregnancy outcomes in seasonally anovular dairy goats.
650 $aCorpus luteum
650 $aEstrus synchronization
650 $aGoats
650 $aHuman chorionic gonadotropin
650 $aPregnancy rate
650 $aProgesterone
650 $aReproduction
650 $aUltrasonography
650 $aCabra Leiteira
650 $aCaprino
650 $aCorpo Lúteo
650 $aPrenhez
650 $aProgesterona
650 $aReprodução
650 $aSincronização do Cio
650 $aTaxa
650 $aUltrassom
700 1 $aGUIMARAES, J. D.
700 1 $aRANGEL, P. S. C.
700 1 $aOLIVEIRA, M. E. R.
700 1 $aBRANDAO, F. Z.
700 1 $aBARTLEWSKI, P. M.
700 1 $aFONSECA, J. F. da
773 $tAnimal Reproduction Science$gv. 275, 107818, Apr. 2025.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 6 | |
| 1. |  | MATTOS, P. S. R.; FIORAVANTE, M. C. S.; ALBUQUERQUE, M. S. M.; BIAZIO, G. R.; NASCIMENTO, C. B. Frecuencia de haplótipos del gene Bola-DRB3 (Exon 2), en una población de bovinos de la raza Curraleiro-Pé-Duro, en la región Centro Oeste De Brasil. In: SIMPOSIO IBEROAMERICANO SOBRE CONSERVACIÓN Y UTILIZACIÓN DE RECURSOS ZOOGENÉTICOS, 2017, Chiquimula, Guatemala. [Anais...]. São Carlos de Guatemala: Universidad de São Carlos de Guatemala, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 2. | | GUIMARÃES, C. O.; ABUD, L. J.; RODRIGUES, A. L.; SERENO, J. R. B.; FIORAVANTE, M. C. S.; MARTINS, C. F. Efeito da adição de antioxidantes na qualidade do sêmen criopreservado de bovinos - resultados parciais. In: CONGRESSO DE PESQUISA, ENSINO E EXTENSÃO, 2010, Goiânia. Anais... Goiânia: UFG, 2010. 1 CD-ROM. p. 5382-5386. CONPEEX 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
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| 3. | | CARDOSO, D.; OLIVEIRA, N. A. de; LAUDARES, K. M.; VAZ JÚNIOR, R. G.; RAMOS, A. F.; PRADO, C. S. do; EGITO, A. A. do; COSTA. M. F. O. e; FIORAVANTE, M. C. S. Carcass and meat cut yield in feedlot of cattle breeds locally adapted. In: WORLD BUIATRICS CONGRESS, 26., 2010, Santiago. Proceedings... Santiago: Buatrics, 2010. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 4. | | CARDOSO, D.; OLIVEIRA, N. A. de; LAUDARES, K. M.; VAZ JÚNIOR, R. G.; RAMOS, A. F.; PRADO, C. S. do; EGITO, A. A. do; COSTA. M. F. O. e; FIORAVANTE, M. C. S. Carcass and meat cut yield in feedlot of cattle breeds locally adapted. In: WORLD BUIATRICS CONGRESS, 26., 2010, Santiago. Proceedings... Santiago: Buatrics, 2010. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 5. | | CASTANHEIRA, M.; MCMANUS, C. M.; PAULA NETO, J. B. DE; COSTA, M. J. R. P. DA; MENDES, F. D. C.; SERENO, J. R. B.; BÉRTOLI, C. D.; FIORAVANTE, M. C. S. Maternal offspring behaviour in Curraleiro Pé Duro naturalized cattle in Brazil. Revista Brasileira de Zootecnia, v. 42, n. 8, p. 584-591, 2013.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Cerrados. |
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| 6. | | FERREIRA, O. R.; BRITO, S. S.; LIMA, F. G.; MARIANO SOUZA, D. P.; MENDONCA, S.; RIBEIRO, J. A. de A.; MAIORKA, P. C.; ARAÚJO, V. L.; NEIVA, J. N. M.; FIORAVANTE, M. C. S.; RAMOS, A. T.; MARUO, V. M. Toxicidade do pericarpo da Jatropha curcas em ovinos. Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, Belo Horizonte, v. 64, n. 3, p. 559-567, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroenergia. |
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| Registros recuperados : 6 | |
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