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1 April 1989 YOHIMBINE REVERSAL OF KETAMINE-XYLAZINE IMMOBILIZATION OF RACCOONS (PROCYON LOTOR)
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Abstract

Six adult raccoons (Procyon lotor) were sedated with a combination of ketamine hydrochloride (KH) at 10 mg/kg body weight and xylazine hydrochloride (XH) at 2 mg/kg body weight intramuscularly (i.m.). Twenty min after the KH-XH combination was given, yohimbine hydrochloride (YH) at either 0.1 mg/kg (Trial 1) or 0.2 mg/kg (Trial 2) body weight or a saline control (Trial 3) was administered intravenously (i.v.). The time to arousal, time to sternal recumbency and time to walking were recorded. These times were significantly shortened after YH administration [e.g., mean time to walking (MTW) at 0.2 mg/kg YH = 23.7 min] as compared to the saline controls (MTW = 108.8 min). Heart and respiratory rates both increased after YH administration, while body temperature remained constant. A fourth trial was performed using a higher ratio of KH to XH (45:1 rather than 5:1) to mimic sedation as performed in the field. The mean time to arousal (MTA) and MTW in this trial (1.3 and 23.7 min, respectively) were significantly shorter than controls and similar to YH trials performed after immobilization with 5:1 KH-XH. Yohimbine hydrochloride may be useful in field studies that require sedation of raccoons using KH-XH combinations.

Deresienski and Rupprecht: YOHIMBINE REVERSAL OF KETAMINE-XYLAZINE IMMOBILIZATION OF RACCOONS (PROCYON LOTOR)
Diane T. Deresienski and Charles E. Rupprecht "YOHIMBINE REVERSAL OF KETAMINE-XYLAZINE IMMOBILIZATION OF RACCOONS (PROCYON LOTOR)," Journal of Wildlife Diseases 25(2), 169-174, (1 April 1989). https://doi.org/10.7589/0090-3558-25.2.169
Received: 2 February 1988; Published: 1 April 1989
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