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1 April 1988 KETAMINE-XYLAZINE ANESTHESIA IN RED-TAILED HAWKS WITH ANTAGONISM BY YOHIMBINE
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Abstract

Five red-tailed hawks (Buteo jamaicensis) were anesthetized at weekly intervals with intravenous ketamine hydrochloride (KET, 4.4 mg/kg) and xylazine hydrochloride (XYL, 2.2 mg/kg). Twenty min after anesthesia, yohimbine hydrochloride (YOH, 0.05, 0.10, 0.20 and 0.40 mg/kg) or a control was administered. All doses of YOH significantly reduced the head-up times (F = 20.84, df = 1,24, P < 0.0001) and the standing times (F = 12.30, df = 1.24, P < 0.0001), compared to the control group. The heart and respiratory rates following YOH (all doses) were significantly greater (P < 0.01) than the anesthetized rates, but were comparable to the rates observed in restrained, unanesthetized hawks. Yohimbine did not appear to have any significant effect on body temperature. Based upon administration of 4.4 mg/kg KET and 2.2 mg/kg XYL, a dose of 0.10 mg/kg YOH was recommended to achieve antagonism without causing profound cardiovascular or respiratory changes.

Degernes, Kreeger, Mandsager, and Redig: KETAMINE-XYLAZINE ANESTHESIA IN RED-TAILED HAWKS WITH ANTAGONISM BY YOHIMBINE
Laurel A. Degernes, Terry J. Kreeger, Ronald Mandsager, and Patrick T. Redig "KETAMINE-XYLAZINE ANESTHESIA IN RED-TAILED HAWKS WITH ANTAGONISM BY YOHIMBINE," Journal of Wildlife Diseases 24(2), 322-326, (1 April 1988). https://doi.org/10.7589/0090-3558-24.2.322
Received: 26 June 1987; Published: 1 April 1988
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