Cervical transposition test using Hegar dilator at oestrus as a tool to select ewes for transcervical embryo collection
2019
Santos, Juliana Dantas Rodrigues | Arashiro, Eduardo Kenji Nunes | Balaro, Mário Felipe Alvarez | Souza‐Fabjan, Joanna Maria Gonçalves | Pinto, Pedro Henrique Nicolau | de Souza, Clara Vieira | Leite, Ceci Ribeiro | Fonseca, Jeferson Ferreira da | Brandão, Felipe Zandonadi
This study evaluated the cervical transposition method as a tool to select ewes for embryo collection by transcervical route. Adult Santa Inês ewes (n = 50) received Day 0 protocol for superovulation treatments. The cervix transposition test was performed both at oestrus and at the embryo collection time. The latter was preceded by hormonal cervical dilation. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 85.7%, 66.6%, 85.7%, 66.6% and 80.0%, respectively. The kappa index yielded a moderate score (κ = 0.52). In conclusion, the high sensitivity and accuracy indicate that the cervical transposition test is a screening option to select ewes for embryo collection by transcervical route.
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