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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
Published by: American Association of Zoo Veterinarians
Stable URL: http://www.jstor.org/stable/20460294
Page Count: 4
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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.
Journal of Zoo and Wildlife Medicine © 1992 American Association of Zoo Veterinarians