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Lacaune ewes had their cervix evaluated by ultrasonography 12\u00a0hr after induced oestrus onset (Trial 1, <jats:italic>n<\/jats:italic>\u00a0=\u00a024) or 30\u00a0min before NSER (Trial 2, <jats:italic>n<\/jats:italic>\u00a0=\u00a017). Cervical rings were longitudinally evaluated and classified by their degree of misalignment on ultrasonography (DMUS) into: DMUS\u20101\u2014cervix rectilinear, DMUS\u20102\u2014intermediate and DMUS\u20103\u2014highly asymmetrical. For predicting cervical transposing, only DMUS\u20101 and DMUS\u20102 were considered suitable. Similar ranking was attributed to degree of misalignment on the cervical map (DMCM 1\u20133), 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\u20103 (3\/14, 21.4%). No difference (<jats:italic>p<\/jats:italic>\u00a0&gt;\u00a0.05) was observed in the cervical transposing rates between ewes with different DMUS (ranged from 80% to 100%). In Trial 2, DMUS\u20101 and DMUS\u20102 reached 100% of transposing, and the only DMUS\u20103 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.<\/jats:p>","DOI":"10.1111\/rda.13825","type":"journal-article","created":{"date-parts":[[2020,9,22]],"date-time":"2020-09-22T09:18:14Z","timestamp":1600766294000},"page":"1638-1645","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Ultrasonographic cervical evaluation: A tool to select ewes for non\u2010surgical embryo recovery"],"prefix":"10.1111","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3242-2294","authenticated-orcid":false,"given":"Lucas Machado","family":"Figueira","sequence":"first","affiliation":[{"name":"Universidade Federal de Lavras  Lavras Brazil"},{"name":"Universidade Federal Fluminense  Niter\u00f3i Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5044-8143","authenticated-orcid":false,"given":"Nadja Gomes","family":"Alves","sequence":"additional","affiliation":[{"name":"Universidade Federal de Lavras  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4872-1718","authenticated-orcid":false,"given":"Joanna Maria Gon\u00e7alves","family":"Souza\u2010Fabjan","sequence":"additional","affiliation":[{"name":"Universidade Federal Fluminense  Niter\u00f3i Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7143-6408","authenticated-orcid":false,"given":"Gabriel Brun","family":"Vergani","sequence":"additional","affiliation":[{"name":"Universidade Estadual Paulista \u201cJ\u00falio de Mesquita Filho\u201d  Jaboticabal Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7730-290X","authenticated-orcid":false,"given":"Maria Emilia Franco","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Universidade Estadual Paulista \u201cJ\u00falio de Mesquita Filho\u201d  Jaboticabal Brazil"},{"name":"Embrapa Caprinos e Ovinos  Coronel Pacheco Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4607-4964","authenticated-orcid":false,"given":"Renato Ribeiro","family":"de Lima","sequence":"additional","affiliation":[{"name":"Universidade Federal de Lavras  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8028-3984","authenticated-orcid":false,"given":"Jeferson Ferreira","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Embrapa Caprinos e Ovinos  Coronel Pacheco Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,10,29]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2015.05.011"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1186\/1477-7827-12-8"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/rda.13692"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2019.11.004"},{"key":"e_1_2_10_6_1","first-page":"1","article-title":"Classifica\u00e7\u00e3o de Ovelhas para a Colheita de Embri\u00f5es pela Via Transcervical de Acordo com o Grau de Facilidade de Transposi\u00e7\u00e3o Cervical","volume":"45","author":"Fonseca J. 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