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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
17/07/2020 |
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Data da última atualização: |
10/01/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FIGUEIRA, L. M.; ALVES, N. G.; MAIA, A. L. R. e S.; SOUZA-FABJAN, J. M. de; BATISTA, R. I. T. P.; MORAIS, M. C. da C.; LIMA, R. R. de; OLIVEIRA, M. E. F.; FONSECA, J. F. da. |
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Afiliação: |
LUCAS MACHADO FIGUEIRA, UNIVERSIDADE FEDERAL DE LAVRAS; NADJA GOMES ALVES, UNIVERSIDADE FEDERAL DE LAVRAS; ANA LUCIA ROSA E SILVA MAIA, UNIVERSIDADE FEDERAL FLUMINENSE; JOANNA MARIA GONÇALVES DE SOUZA-FABJAN, UNIVERSIDADE FEDERAL FLUMINENSE; RIBRIO IVAN TAVARES PEREIRA BATISTA, UNIVERSIDADE FEDERAL FLUMINENSE; MARIA CLARA DA CRUZ MORAIS, UNIVERSIDADE FEDERAL FLUMINENSE; RENATO RIBEIRO DE LIMA, UNIVERSIDADE FEDERAL DE LAVRAS; MARIA EMILIA FRANCO OLIVEIRA, UNIVERSIDADE ESTADUAL PAULISTA“JÚLIO DE MESQUITA FILHO; JEFERSON FERREIRA DA FONSECA, CNPC. |
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Título: |
Embryo yield and quality are associated with progestogen treatment during superovulation protocol in lactating Lacaune ewes. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Theriogenology, v. 155, p. 132-138, Oct. 2020. |
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DOI: |
https://doi.org/10.1016/j.theriogenology.2020.06.004 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: This study assessed the effect of progestogen treatment length on ovarian parameters and embryo yield in superovulated Lacaune ewes collected by nonsurgical embryo recovery. Twenty-three lactating ewes were superovulated 30 d apart using a cross-over design. All ewes received 60 mg of MAP intravaginal sponges for 6 (G-6 group) or 9 (G-9 group) d. A total dose of 133 mg pFSH was given in six decreasing doses (twice a day) starting at 60 h before device removal. Ultrasound examination of the ovaries was performed at the first pFSH injection and one day before embryo recovery, which was performed 6?7 d after the onset of estrus. Embryo recovery was conducted only in ewes that expressed estrus and were mated. There was no difference (P > 0.05) in the total number of follicles between G-6 (15.7 ± 1.0) and G-9 (15.6 ± 0.8) at the time of the first pFSH treatment. The percentage of responding donors with ?3 corpora lutea (CL; 78.2% [18/23] vs 69.5% [16/23]), mean (±SEM) CL number (7.0 ± 1.2 vs 8.1 ± 1.6), transcervical passage rate (94.4% [17/18] vs 83.3% [15/18], and ova/embryo recovery rate (54.5% [60/110] vs 68.0% [83/122]) were not different (P > 0.05) between the G-6 and G-9 groups. However, the mean number of viable embryos was lower (P < 0.05) in the G-6 group (1.8 ± 0.7) than in the G-9 group. (3.5 ± 1.1). In conclusion, treatment with an intravaginal MAP sponge for 9 d during a superovulation protocol is beneficial for viable embryo yield in Lacaune ewes out of the breeding season. MenosAbstract: This study assessed the effect of progestogen treatment length on ovarian parameters and embryo yield in superovulated Lacaune ewes collected by nonsurgical embryo recovery. Twenty-three lactating ewes were superovulated 30 d apart using a cross-over design. All ewes received 60 mg of MAP intravaginal sponges for 6 (G-6 group) or 9 (G-9 group) d. A total dose of 133 mg pFSH was given in six decreasing doses (twice a day) starting at 60 h before device removal. Ultrasound examination of the ovaries was performed at the first pFSH injection and one day before embryo recovery, which was performed 6?7 d after the onset of estrus. Embryo recovery was conducted only in ewes that expressed estrus and were mated. There was no difference (P > 0.05) in the total number of follicles between G-6 (15.7 ± 1.0) and G-9 (15.6 ± 0.8) at the time of the first pFSH treatment. The percentage of responding donors with ?3 corpora lutea (CL; 78.2% [18/23] vs 69.5% [16/23]), mean (±SEM) CL number (7.0 ± 1.2 vs 8.1 ± 1.6), transcervical passage rate (94.4% [17/18] vs 83.3% [15/18], and ova/embryo recovery rate (54.5% [60/110] vs 68.0% [83/122]) were not different (P > 0.05) between the G-6 and G-9 groups. However, the mean number of viable embryos was lower (P < 0.05) in the G-6 group (1.8 ± 0.7) than in the G-9 group. (3.5 ± 1.1). In conclusion, treatment with an intravaginal MAP sponge for 9 d during a superovulation protocol is beneficial for viable embryo yield in Lacaune ewes out of t... Mostrar Tudo |
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Palavras-Chave: |
MOET; Transcervical; Uterine flushing. |
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Thesaurus Nal: |
Animal reproduction; Dairy sheep; Embryo transfer; Superovulation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02512naa a2200313 a 4500
001 2123905
005 2025-01-10
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.theriogenology.2020.06.004$2DOI
100 1 $aFIGUEIRA, L. M.
245 $aEmbryo yield and quality are associated with progestogen treatment during superovulation protocol in lactating Lacaune ewes.$h[electronic resource]
260 $c2020
520 $aAbstract: This study assessed the effect of progestogen treatment length on ovarian parameters and embryo yield in superovulated Lacaune ewes collected by nonsurgical embryo recovery. Twenty-three lactating ewes were superovulated 30 d apart using a cross-over design. All ewes received 60 mg of MAP intravaginal sponges for 6 (G-6 group) or 9 (G-9 group) d. A total dose of 133 mg pFSH was given in six decreasing doses (twice a day) starting at 60 h before device removal. Ultrasound examination of the ovaries was performed at the first pFSH injection and one day before embryo recovery, which was performed 6?7 d after the onset of estrus. Embryo recovery was conducted only in ewes that expressed estrus and were mated. There was no difference (P > 0.05) in the total number of follicles between G-6 (15.7 ± 1.0) and G-9 (15.6 ± 0.8) at the time of the first pFSH treatment. The percentage of responding donors with ?3 corpora lutea (CL; 78.2% [18/23] vs 69.5% [16/23]), mean (±SEM) CL number (7.0 ± 1.2 vs 8.1 ± 1.6), transcervical passage rate (94.4% [17/18] vs 83.3% [15/18], and ova/embryo recovery rate (54.5% [60/110] vs 68.0% [83/122]) were not different (P > 0.05) between the G-6 and G-9 groups. However, the mean number of viable embryos was lower (P < 0.05) in the G-6 group (1.8 ± 0.7) than in the G-9 group. (3.5 ± 1.1). In conclusion, treatment with an intravaginal MAP sponge for 9 d during a superovulation protocol is beneficial for viable embryo yield in Lacaune ewes out of the breeding season.
650 $aAnimal reproduction
650 $aDairy sheep
650 $aEmbryo transfer
650 $aSuperovulation
653 $aMOET
653 $aTranscervical
653 $aUterine flushing
700 1 $aALVES, N. G.
700 1 $aMAIA, A. L. R. e S.
700 1 $aSOUZA-FABJAN, J. M. de
700 1 $aBATISTA, R. I. T. P.
700 1 $aMORAIS, M. C. da C.
700 1 $aLIMA, R. R. de
700 1 $aOLIVEIRA, M. E. F.
700 1 $aFONSECA, J. F. da
773 $tTheriogenology$gv. 155, p. 132-138, Oct. 2020.
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