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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
Data corrente: |
17/02/2020 |
Data da última atualização: |
19/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FIGUEIRA, L. M.; ALVES, N. G.; SOUZA-FABJAN, J. M. G.; OLIVEIRA, M. E. F.; LIMA, R. R.; SOUZA, G. N. de; FONSECA, J. F. da. |
Afiliação: |
LUCAS MACHADO FIGUEIRA, Universidade Federal de Lavras; NADJA GOMES ALVES, Universidade Federal de Lavras; JOANNA MARIA GONÇALVES SOUZA-FABJAN, Universidade Federal Fluminense Federal; MARIA EMILIA FRANCO OLIVEIRA, Universidade Estadual Paulista "Júlio de Mesquita Filho"; RENATO RIBEIRO LIMA, Universidade Federal de Lavras; GUILHERME NUNES DE SOUZA, CNPGL; JEFERSON FERREIRA DA FONSECA, CNPC. |
Título: |
Preovulatory follicular dynamics, ovulatory response and embryo yield in Lacaune ewes subjected to synchronous estrus induction protocols and non-surgical embryo recovery. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Theriogenology, v. 145, p. 238-246, 2020. |
DOI: |
https://doi.org/10.1016/j.theriogenology.2019.11.004 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: The objective of this study was to assess the effect of the duration of progesterone-based estrus induction protocols on preovulatory follicular dynamics, ovulatory response, and embryo yield after non-surgical embryo recovery (NSER) in Lacaune ewes. Females received acetate medroxyprogesterone intravaginal sponges for six (G-6; n = 14) or nine (G-9; n = 14) days plus d-cloprostenol and eCG 24 h before sponge removal (Day 0). Preovulatory follicular dynamics and the luteal characteristics are evaluated by B-mode and Color-Doppler ultrasonography. NSER was performed five to six days after ovulation. The estrous behavior rate was 85.7% for both groups, and the percentage of ewes that ovulated was 92.9% in G-6 and 100% in G-9. The day of wave emergence (relative to Day 0) did not differ (P > 0.05) between G-6 (-3.0 ± 0.5) and G-9 (-4.2 ± 0.5). The number of follicles of size 4.1-5.0 mm was higher (P < 0.05) in G-9 (1.4 ± 0.2) compared to G-6 (0.8 ± 0.2) during the Days -4 to 0. At NSER, the transcervical penetration rate was 95.2% (20/21) and its duration time was lower (P < 0.05) in G-9 (3.4 ± 0.6 min) than in G-6 (7.2 ± 1.3 min). The number of ovulations and viable embryos was higher (P < 0.05) in G-9 (2.9 ± 0.3 and 1.3 ± 0.4, respectively) than in G-6 (1.9 ± 0.3 and 0.4 ± 0.2, respectively). In conclusion, the 9-day protocol promoted higher ovulation rate and embryo yield; moreover, the cervical dilation treatment allowed NSER in a high percentage of Lacaune ewes. |
Palavras-Chave: |
Cervical dilation; Induced ovulation; Ovino leiteiro; Resposta ovulatória; Transcervical embryo recovery; Uterine flushing. |
Thesagro: |
Ciclo Estral; Indução; Ovelha; Ovulação; Reprodução Animal. |
Thesaurus Nal: |
Animal reproduction; Brazil; Dairy sheep; Estrous cycle; Estrus synchronization; Ewes. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02781naa a2200409 a 4500 001 2133348 005 2021-08-19 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.theriogenology.2019.11.004$2DOI 100 1 $aFIGUEIRA, L. M. 245 $aPreovulatory follicular dynamics, ovulatory response and embryo yield in Lacaune ewes subjected to synchronous estrus induction protocols and non-surgical embryo recovery.$h[electronic resource] 260 $c2020 520 $aAbstract: The objective of this study was to assess the effect of the duration of progesterone-based estrus induction protocols on preovulatory follicular dynamics, ovulatory response, and embryo yield after non-surgical embryo recovery (NSER) in Lacaune ewes. Females received acetate medroxyprogesterone intravaginal sponges for six (G-6; n = 14) or nine (G-9; n = 14) days plus d-cloprostenol and eCG 24 h before sponge removal (Day 0). Preovulatory follicular dynamics and the luteal characteristics are evaluated by B-mode and Color-Doppler ultrasonography. NSER was performed five to six days after ovulation. The estrous behavior rate was 85.7% for both groups, and the percentage of ewes that ovulated was 92.9% in G-6 and 100% in G-9. The day of wave emergence (relative to Day 0) did not differ (P > 0.05) between G-6 (-3.0 ± 0.5) and G-9 (-4.2 ± 0.5). The number of follicles of size 4.1-5.0 mm was higher (P < 0.05) in G-9 (1.4 ± 0.2) compared to G-6 (0.8 ± 0.2) during the Days -4 to 0. At NSER, the transcervical penetration rate was 95.2% (20/21) and its duration time was lower (P < 0.05) in G-9 (3.4 ± 0.6 min) than in G-6 (7.2 ± 1.3 min). The number of ovulations and viable embryos was higher (P < 0.05) in G-9 (2.9 ± 0.3 and 1.3 ± 0.4, respectively) than in G-6 (1.9 ± 0.3 and 0.4 ± 0.2, respectively). In conclusion, the 9-day protocol promoted higher ovulation rate and embryo yield; moreover, the cervical dilation treatment allowed NSER in a high percentage of Lacaune ewes. 650 $aAnimal reproduction 650 $aBrazil 650 $aDairy sheep 650 $aEstrous cycle 650 $aEstrus synchronization 650 $aEwes 650 $aCiclo Estral 650 $aIndução 650 $aOvelha 650 $aOvulação 650 $aReprodução Animal 653 $aCervical dilation 653 $aInduced ovulation 653 $aOvino leiteiro 653 $aResposta ovulatória 653 $aTranscervical embryo recovery 653 $aUterine flushing 700 1 $aALVES, N. G. 700 1 $aSOUZA-FABJAN, J. M. G. 700 1 $aOLIVEIRA, M. E. F. 700 1 $aLIMA, R. R. 700 1 $aSOUZA, G. N. de 700 1 $aFONSECA, J. F. da 773 $tTheriogenology$gv. 145, p. 238-246, 2020.
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1. | | LEMOS, P. P. F.; ALMEIDA, M. M. S. de; BASTOS, C. S.; NAGATA, A. K. I. Avaliação do efeito da begomovirose na qualidade do fruto de tomate para processamento industrial. Horticultura Brasileira, Brasília, DF, v. 28, n. 2, p. S1142-S1147, jul. 2010. CD-ROM. Trabalho apresentado no Congresso Brasileiro de Olericultura, 50., 2010, Guarapari. Cinquenta anos contribuindo para a saúde da população brasileira. Trabalho A3056-T5070.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Hortaliças. |
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3. | | ALMEIDA, M. M. S. de; JAIN, S.; BARROSO, P. A. V.; HOFFMANN, L. V.; LUCENA, M. G. de; RESENDE, R. de O.; INOUE-NAGATA, A. K. Complete sequence of a New Bipartite begomovirus infecting cotton plants in Brazil. Genome Announcements, v. 1, n. 6, p. 1, Nov./Dec. 2013.Tipo: Artigo em Periódico Indexado | Circulação/Nível: C - 0 |
Biblioteca(s): Embrapa Algodão. |
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4. | | SALES, T. T.; OLIVEIRA, M. A. de; ROBLEDO, M. L.; BARROS, L. R. C.; GOMIDE, M. da S.; LIMA, R. N.; ALMEIDA, M. M. S. de; FLORENTINO, L. H.; MURAD, A. M.; COELHO, C. M.; MELO, E. de O.; BONAMINO, M. H.; RECH FILHO, E. L. Evaluation of integrases in the control of gene regulation in mammalian cells: a tool for the construction of synthetic biological circuits. In: BRAZILIAN BIOTECHNOLOGY CONGRESS, 7.; BIOTECHNOLOGY IBERO-AMERICAN CONGRESS, 2., 2018, Brasília, DF. Proceedings... Brasília, DF: SBBiotec, 2018.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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Registros recuperados : 4 | |
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