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Ultrasonographic cervical evaluation: A tool to select ewes for non-surgical embryo recovery.
Figueira, Lucas Machado; Alves, Nadja Gomes; Souza-Fabjan, Joanna Maria Gonçalves; Vergani, Gabriel Brun; Oliveira, Maria Emilia Franco; de Lima, Renato Ribeiro; Fonseca, Jeferson Ferreira.
Afiliación
  • Figueira LM; Universidade Federal de Lavras, Lavras, Brazil.
  • Alves NG; Universidade Federal Fluminense, Niterói, Brazil.
  • Souza-Fabjan JMG; Universidade Federal de Lavras, Lavras, Brazil.
  • Vergani GB; Universidade Federal Fluminense, Niterói, Brazil.
  • Oliveira MEF; Universidade Estadual Paulista "Júlio de Mesquita Filho", Jaboticabal, Brazil.
  • de Lima RR; Universidade Estadual Paulista "Júlio de Mesquita Filho", Jaboticabal, Brazil.
  • Fonseca JF; Embrapa Caprinos e Ovinos, Coronel Pacheco, Brazil.
Reprod Domest Anim ; 55(11): 1638-1645, 2020 Nov.
Article en En | MEDLINE | ID: mdl-32959440
This study assessed the cervical ultrasonography mapping as a tool to select donor ewes for non-surgical embryo recovery (NSER). Lacaune ewes had their cervix evaluated by ultrasonography 12 hr after induced oestrus onset (Trial 1, n = 24) or 30 min before NSER (Trial 2, n = 17). Cervical rings were longitudinally evaluated and classified by their degree of misalignment on ultrasonography (DMUS) into: DMUS-1-cervix rectilinear, DMUS-2-intermediate and DMUS-3-highly asymmetrical. For predicting cervical transposing, only DMUS-1 and DMUS-2 were considered suitable. Similar ranking was attributed to degree of misalignment on the cervical map (DMCM 1-3), established immediately before NSER, which was performed at days 6 to 7 after oestrus. In Trial 1, cervical retraction for NSER was not possible only in three ewes classified as DMUS-3 (3/14, 21.4%). No difference (p > .05) was observed in the cervical transposing rates between ewes with different DMUS (ranged from 80% to 100%). In Trial 2, DMUS-1 and DMUS-2 reached 100% of transposing, and the only DMUS-3 ewe has not been transposed. In Trial 1, the prediction performance for successful cervical transposing showed low sensitivity (45%) and no specificity due to a high incidence of false negatives (52%). However, in Trial 2, sensitivity and specificity were both 100%. The DMCM and DMUS were uncorrelated, probably due to cervical stretching required to perform NSER. In conclusion, cervical ultrasound assessment immediately before NSER was more efficient to predict the cervical transposing than at induced oestrus, allowing the classification and selection of ewes eligible for NSER.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cuello del Útero / Ultrasonografía / Transferencia de Embrión Tipo de estudio: Diagnostic_studies Límite: Animals / Pregnancy Idioma: En Revista: Reprod Domest Anim Asunto de la revista: MEDICINA REPRODUTIVA / MEDICINA VETERINARIA Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cuello del Útero / Ultrasonografía / Transferencia de Embrión Tipo de estudio: Diagnostic_studies Límite: Animals / Pregnancy Idioma: En Revista: Reprod Domest Anim Asunto de la revista: MEDICINA REPRODUTIVA / MEDICINA VETERINARIA Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania