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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
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Data corrente: |
19/08/2020 |
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Data da última atualização: |
09/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO-DE-PAULA, C. J.; SOUZA-FABJAN, J. M. G.; GONÇALVES, J. D.; DIAS, J. H.; SOUZA, G. N. de; OLIVEIRA, M. E. F.; FONSECA, J. F. da. |
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Afiliação: |
CLEBER JONAS CARVALHO-DE-PAULA, Universidade Federal Fluminense; JOANNA MARIA GONÇALVES SOUZA-FABJAN, Universidade Federal Fluminense; JOEDSON DANTAS GONÇALVES, Universidade Estadual Paulista; JENNIFFER HAUSCHILDT DIAS, Universidade Federal de Viçosa; GUILHERME NUNES DE SOUZA, CNPGL; MARIA EMILIA FRANCO OLIVEIRA, Universidade Estadual Paulista; JEFERSON FERREIRA DA FONSECA, CNPC. |
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Título: |
Effect of a 12-h increment in the short-term treatment regimen on ovarian status, estrus synchrony, and pregnancy rate in artificially inseminated dairy goats. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 221, e106571, 2020. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2020.106571 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: This study was conducted to assess effects of two hormonal treatments on ovarian follicular status, estrous synchrony and fertility in dairy goats during the non-breeding season when duration of progestogen device use varied by 12h. In both experiments, does were administered 60?mg of medroxyprogesterone acetate via intravaginal devices, respectively, for 6 and 6.5 d (G6 and G6.5). At 24 or 36?h before device removal, 200 IU of eCG im and 30??g?d-cloprostenol im were administered. In Experiment 1 (n = 24), data related to sexual behavior and that were collected using ovarian ultrasonography were recorded, and in Experiment 2 (n?=?83) fertility was assessed after Flexible Time Artificial Insemination (FxTAI). The interval from device removal to estrus was shorter (P < 0.05) after imposing the G6.5 treatment regimen. Diameter of largest and second-largest ovarian follicles and interval from device removal to ovulation were similar (P> 0.05) between groups. The does treated with the G6.5 hormonal regimen had greater estrous synchrony, associated with greater development of largest follicles at the time of device removal, which might have led to a lesser fertility rate (P > 0.05). Conversely, treatment with the G6 hormonal regimen resulted in a greater conception rate. In conclusion, increasing time the intravaginal device is inserted from 6 to 6.5 d resulted in greater estrous synchrony, advanced ovarian follicular development, abnormal CL function and lesser pregnancy rates in artificially inseminated dairy goats when there were treatments during the non-breeding season. MenosAbstract: This study was conducted to assess effects of two hormonal treatments on ovarian follicular status, estrous synchrony and fertility in dairy goats during the non-breeding season when duration of progestogen device use varied by 12h. In both experiments, does were administered 60?mg of medroxyprogesterone acetate via intravaginal devices, respectively, for 6 and 6.5 d (G6 and G6.5). At 24 or 36?h before device removal, 200 IU of eCG im and 30??g?d-cloprostenol im were administered. In Experiment 1 (n = 24), data related to sexual behavior and that were collected using ovarian ultrasonography were recorded, and in Experiment 2 (n?=?83) fertility was assessed after Flexible Time Artificial Insemination (FxTAI). The interval from device removal to estrus was shorter (P < 0.05) after imposing the G6.5 treatment regimen. Diameter of largest and second-largest ovarian follicles and interval from device removal to ovulation were similar (P> 0.05) between groups. The does treated with the G6.5 hormonal regimen had greater estrous synchrony, associated with greater development of largest follicles at the time of device removal, which might have led to a lesser fertility rate (P > 0.05). Conversely, treatment with the G6 hormonal regimen resulted in a greater conception rate. In conclusion, increasing time the intravaginal device is inserted from 6 to 6.5 d resulted in greater estrous synchrony, advanced ovarian follicular development, abnormal CL function and lesser pregnanc... Mostrar Tudo |
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Palavras-Chave: |
AI; Corpora lutea; Dinâmica folicular; Follicular dynamics; Taxa de prenhez; Ultrasound. |
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Thesagro: |
Cabra Leiteira; Caprino; Ciclo Estral; Corpo Lúteo; Fertilidade; Inseminação Artificial; Prenhez; Progesterona; Reprodução Animal; Sincronização do Cio; Ultrassom. |
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Thesaurus Nal: |
Anestrus; Animal reproduction; Artificial insemination; Estrous cycle; Female fertility; Medroxyprogesterone; Synthetic progestogens; 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 2133347
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008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2020.106571$2DOI
100 1 $aCARVALHO-DE-PAULA, C. J.
245 $aEffect of a 12-h increment in the short-term treatment regimen on ovarian status, estrus synchrony, and pregnancy rate in artificially inseminated dairy goats.$h[electronic resource]
260 $c2020
520 $aAbstract: This study was conducted to assess effects of two hormonal treatments on ovarian follicular status, estrous synchrony and fertility in dairy goats during the non-breeding season when duration of progestogen device use varied by 12h. In both experiments, does were administered 60?mg of medroxyprogesterone acetate via intravaginal devices, respectively, for 6 and 6.5 d (G6 and G6.5). At 24 or 36?h before device removal, 200 IU of eCG im and 30??g?d-cloprostenol im were administered. In Experiment 1 (n = 24), data related to sexual behavior and that were collected using ovarian ultrasonography were recorded, and in Experiment 2 (n?=?83) fertility was assessed after Flexible Time Artificial Insemination (FxTAI). The interval from device removal to estrus was shorter (P < 0.05) after imposing the G6.5 treatment regimen. Diameter of largest and second-largest ovarian follicles and interval from device removal to ovulation were similar (P> 0.05) between groups. The does treated with the G6.5 hormonal regimen had greater estrous synchrony, associated with greater development of largest follicles at the time of device removal, which might have led to a lesser fertility rate (P > 0.05). Conversely, treatment with the G6 hormonal regimen resulted in a greater conception rate. In conclusion, increasing time the intravaginal device is inserted from 6 to 6.5 d resulted in greater estrous synchrony, advanced ovarian follicular development, abnormal CL function and lesser pregnancy rates in artificially inseminated dairy goats when there were treatments during the non-breeding season.
650 $aAnestrus
650 $aAnimal reproduction
650 $aArtificial insemination
650 $aEstrous cycle
650 $aFemale fertility
650 $aMedroxyprogesterone
650 $aSynthetic progestogens
650 $aUltrasonography
650 $aCabra Leiteira
650 $aCaprino
650 $aCiclo Estral
650 $aCorpo Lúteo
650 $aFertilidade
650 $aInseminação Artificial
650 $aPrenhez
650 $aProgesterona
650 $aReprodução Animal
650 $aSincronização do Cio
650 $aUltrassom
653 $aAI
653 $aCorpora lutea
653 $aDinâmica folicular
653 $aFollicular dynamics
653 $aTaxa de prenhez
653 $aUltrasound
700 1 $aSOUZA-FABJAN, J. M. G.
700 1 $aGONÇALVES, J. D.
700 1 $aDIAS, J. H.
700 1 $aSOUZA, G. N. de
700 1 $aOLIVEIRA, M. E. F.
700 1 $aFONSECA, J. F. da
773 $tAnimal Reproduction Science$gv. 221, e106571, 2020.
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Embrapa Gado de Leite (CNPGL) |
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| 83. |  | BELTRÃO, N. E. de M. A Planta In: CANTALINO, A. L.; LEÃO, A. L.; LOBO, A. C. O.; STARLING, A. L. de L.; JOAQUIM, A. P.; LEAL, A. F.; MOIR, B.; BANDEIRA, D. A.; SUINAGA, F. A.; VAZ, G.; SAVASTANO JÚNIOR, H.; OLIVEIRA, I. F. de; NASCIMENTO, J. W. B. do; SANTOS, J. D'A. dos; CARVALHO, L. P.; BELTRÃO, N. E. de M.; SILVA, O. R. R. F. da; CAPORALI, R.; WERFF, S. V. D.; CARTAXO, W. V.; COUTINHO, W. M. O Sisal do Brasil : Brazilian Sisal. Campina Grande: Embrapa Algodão, 2007. p. 4-8 1 CD-ROM| Tipo: Capítulo em Livro Técnico-Científico | Circulação/Nível: -- - -- |
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