Avaliação clínica da dor e do bem-estar animal em cadeias submetidas à ovariosalpingohisterectomia sob ação do tramadol

Abstract

The purpose of this experiment was to evaluate the safety and efficacy of tramadol in the dose of 4mg/kg/IV in bitches undergoing ovariosalpingohysterectomy surgery, and investigate whether the method brings beneficial results the long-term for females undergoing this procedure, maintaining acceptable levels of Animal Welfare. Was used 20 bitches SRD, healthy, divided into two equal groups. The TRA group received tramadol 4mg/kg/IV 5 minutes before induction of anesthesia. The SAL group received the same volume in the time corresponding to the dose of tramadol, in 0.9% saline solution, intravenously, following the same anesthetic protocol in all animals at a dose of 0.044 mg /kg/SC of atropine in the MPA, induction 2.5 mg/kg of ketamine, 0.5 mg/kg of xylazine and 0.125 mg/kg of diazepam intravenously, was supplemented when necessary. Physiological parameters of the cardiorespiratory and animal welfare functions were evaluated in the Pre-, Trans- and Postoperative. The data were subjected to Tukey test, Friedman and Wilcoxonon at the significance of 5%. As responses the experiment observed a significant difference (p <0.05) in the times between the base moment and 30 minutes after induction of anesthesia in the parameters of FC for treatment with saline; ƒ for tramadol, and SBP, DBP, and MBP for both groups. This difference was also observed (p <0.05) between treatments for parameters DBP and MBP in the time during the administration of tramadol or saline. The method was effective for the surgical procedure while maintaining acceptable levels of animal welfare that been evident with the rates of cortisol that remained within normal physiological values (3.01; 4.63 and 6.0 mcg/dL).