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Immobilization of Mongolian Wild Horses (Equus przewalskii przewalskii) with Carfentanil and Antagonism with Naltrexone

Jack L. Allen
Journal of Zoo and Wildlife Medicine
Vol. 23, No. 4 (Dec., 1992), pp. 422-425
Stable URL: http://www.jstor.org/stable/20460294
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Immobilization of Mongolian Wild Horses (Equus przewalskii przewalskii) with Carfentanil and Antagonism with Naltrexone
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Abstract

Eighteen Mongolian wild horses (Equus przewalskii przewalskii) were immobilized with carfentanil. Immobilizations were performed with a rifle and plastic projectile darts containing a mean dose of 0.02 mg/kg (SD = 0.003) carfentanil. Dart placement was into the muscles of the neck, shoulder, or thigh. Antagonism was accomplished with naltrexone administered i.v. at 50 times the carfentanil dose. The mean induction time (the time from dart injection until recumbency) was 8.92 min (SD = 3.19). The mean standing time (the time from i.v. injection of naltrexone until the horse stood without assistance) was 1.55 min (SD = 0.48). Renarcotization did not occur.

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