EFFECTS OF PREMEDICATION WITH ACEPROMAZINE OR XILAZINE IN THE INDUCTION OF DISSOCIATIVE ANESTHESIA WITH KETAMINE AND DIAZEPAM IN COLLARED-PECCCARIES (Tayassu tajacu)

Abstract

The effect of premedication with acepromazine and xylazine was evaluated in the dissociative anesthesia of collared-pecccaries (Tayassu tajacu). Twenty one animals randomized allocated into three groups of seven individuals. Groups I and II received acepromazine (0.2 mg/Kg) and group III received xylazine (1.0 mg/Kg) by intramuscular route. After 15 minutes, diazepam 0.5 mg/Kg and ketamine (2.5 mg/Kg) were given to group I and diazepam (0.5 mg/Kg) and ketamine (5.0 mg/Kg) to groups II and III, in the same syringe, intravenously (IV). The vital functions as well as the hemogasometry were evaluated. After the anesthesia, the vital functions average were: cardiac frequency (CF) = 133.85 ± 43.31 bpm, respiratory frequency (RF) = 64.57 ± 29.61 rmpm, temperature (T) = 39.82 ± 0.73°C; CF = 124.57 ± 29.43 bpm, RF = 57.28 ± 16.74 rmpm, T = 39.12 ± 0.93°C; and FC = 126.85 ± 34.15 bpm, RF = 95.42 ± 25.45 rmpm, T = 39.67 ± 0.98°C, for groups I, II and III, respectively. There was no significant difference in the hemogasometry. It was concluded that the tranquilization with acepromazine had highest quality. The protocols were safe, and xylazine (1.0 mg/Kg) was insufficient to sedate the animals, but association of acepromazine/ketamine (5.0 mg/Kg)/diazepam produced better results.

KEY WORDS: Acepromazine, collared-peccariy, dissociative anesthesia, Tayassu tajacu, xylazine.