WINTER, Daiane Cristina; MONZEM, Samuel; SPILLER, Paulo Roberto; STOCCO, Matias Bassinello; GOMES, Lianna Ghisi; TRAVAGIN, David Parra; VENÊGA DA CONCEIÇÃO, Elaine Dione; GUIMARÃES, Luciana Dambrósio. Effects of epidural anesthesia with tramadol, ropivacaine or tramadol-ropivacaine combination, in bitches undergoing ovariohysterectomy under anesthesia with isoflurane. Semina: Ciências Agrárias, [S. l.], v. 37, n. 6, p. 4063–4076, 2016. DOI: 10.5433/1679-0359.2016v37n6p4063. Disponível em: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20911. Acesso em: 25 dec. 2025.