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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: |
17/08/2022 |
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Data da última atualização: |
19/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ROCHA, M. S.; MAIA, A. L. R. S.; RANGEL, P. S. C.; OLIVEIRA, M. E. F.; FONSECA, J. F. da; OLIVEIRA, C. A.; SOUZA-FABJAN, J. M. G. |
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Afiliação: |
MARCELA S. ROCHA; ANA LUCIA R. S. MAIA; PAULO SÉRGIO C. RANGEL; MARIA EMILIA F. OLIVEIRA; JEFERSON FERREIRA DA FONSECA, CNPC; CLÁUDIO A. OLIVEIRA; JOANNA M. G. SOUZA-FABJAN. |
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Título: |
Occurrence of premature regression of corpus luteum in MOET programs in Dorper ewes under subtropical climate. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Livestock Science, v. 255, 104808, 2022. |
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DOI: |
http://dx.doi.org/10.1016/j.livsci.2021.104808 |
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Idioma: |
Inglês |
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Conteúdo: |
Premature regression of corpus luteum (PRCL) is a functional alteration that occurs mainly in superovulated females hampering the widespread use of multiple ovulation and embryo transfer (MOET). This study evaluated the association of donor age (3?9 years old), body condition score (2 to 4.5), number of MOET (1 to 5) repetitions and season (breeding, transition, or non-breeding) with the occurrence of PRCL in ewes. Multiparous Dorper ewes (n = 44) were subjected to MOET during four consecutive years, with the same superovulatory treatment. Before embryo collection, ovaries were laparoscopically performed to assess the corpora lutea (CL). Overall, the total PRCL occurrence was 24.7% (26/105) and it had no association with the studied factors. Percentages of ewes that presented PRCL once or twice were 45.5% (20/44) and 6.8% (3/44), respectively, while the percentage of ewes that had no PRCL was 47.7% (21/44). Proportions of PRCL were similar (P > 0.05) among breeding (21%), transition (31%), and non-breeding (24%) season; and also (P > 0.05) in lower/thin (20%), average/good (24%), and higher/fat (29%) females. In conclusion, although this phenomenon had no association to the factors studied, the occurrence of PRCL affects ?25% of ewes subjected to MOET procedures and future alternatives to circumvent this obstacle need to be developed. |
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Palavras-Chave: |
Abnormal CL; Luteal dysfunction; MOET; Seasonality. |
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Thesagro: |
Corpo Lúteo; Ovelha; Ovino; Reprodução Animal; Superovulação. |
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Thesaurus Nal: |
Assisted reproductive technologies; Embryo transfer; Reproduction; Sheep; Superovulation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02450naa a2200373 a 4500
001 2145477
005 2022-08-19
008 2022 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.livsci.2021.104808$2DOI
100 1 $aROCHA, M. S.
245 $aOccurrence of premature regression of corpus luteum in MOET programs in Dorper ewes under subtropical climate.$h[electronic resource]
260 $c2022
520 $aPremature regression of corpus luteum (PRCL) is a functional alteration that occurs mainly in superovulated females hampering the widespread use of multiple ovulation and embryo transfer (MOET). This study evaluated the association of donor age (3?9 years old), body condition score (2 to 4.5), number of MOET (1 to 5) repetitions and season (breeding, transition, or non-breeding) with the occurrence of PRCL in ewes. Multiparous Dorper ewes (n = 44) were subjected to MOET during four consecutive years, with the same superovulatory treatment. Before embryo collection, ovaries were laparoscopically performed to assess the corpora lutea (CL). Overall, the total PRCL occurrence was 24.7% (26/105) and it had no association with the studied factors. Percentages of ewes that presented PRCL once or twice were 45.5% (20/44) and 6.8% (3/44), respectively, while the percentage of ewes that had no PRCL was 47.7% (21/44). Proportions of PRCL were similar (P > 0.05) among breeding (21%), transition (31%), and non-breeding (24%) season; and also (P > 0.05) in lower/thin (20%), average/good (24%), and higher/fat (29%) females. In conclusion, although this phenomenon had no association to the factors studied, the occurrence of PRCL affects ?25% of ewes subjected to MOET procedures and future alternatives to circumvent this obstacle need to be developed.
650 $aAssisted reproductive technologies
650 $aEmbryo transfer
650 $aReproduction
650 $aSheep
650 $aSuperovulation
650 $aCorpo Lúteo
650 $aOvelha
650 $aOvino
650 $aReprodução Animal
650 $aSuperovulação
653 $aAbnormal CL
653 $aLuteal dysfunction
653 $aMOET
653 $aSeasonality
700 1 $aMAIA, A. L. R. S.
700 1 $aRANGEL, P. S. C.
700 1 $aOLIVEIRA, M. E. F.
700 1 $aFONSECA, J. F. da
700 1 $aOLIVEIRA, C. A.
700 1 $aSOUZA-FABJAN, J. M. G.
773 $tLivestock Science$gv. 255, 104808, 2022.
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