UGWU, N.; EZE, C.; UDEGBUNAM, R. Assessment of the analgesic potency of constant rate infusion of tramadol hydrochloride and as an adjunct to ketoprofen in laparotomized bitches. Sokoto Journal of Veterinary Sciences, [S. l.], v. 15, n. 4, p. 80–87, 2017. DOI: 10.4314/sokjvs.v15i4.12. Disponível em: https://www.ajol.info/index.php/sokjvs/article/view/161337. Acesso em: 6 oct. 2026.