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Journal of Wildlife Diseases, 42(2), 2006, pp. 432-436
© Wildlife Disease Association  2006
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SHORT COMMUNICATION

Reversible Immobilization of Free-ranging African Lions (Panthera leo) with Medetomidine-tiletamine-zolazepam and Atipamezole

Magali Jacquier1,6,7, Per Aarhaug1, Jon M. Arnemo2,3, Hans Bauer4 and Brigitte Enriquez5

1 Elephant Camp, BP 450 Garoua, Cameroon;
2 Section of Arctic Veterinary Medicine, Department of Food Safety and Infection Biology, Norwegian School of Veterinary Science, PO Box 6204, NO-9292 Tromsø, Norway;
3 Department of Forestry and Wilderness Management, Hedmark University College, NO-2480 Koppang, Norway;
4 Institute of Environmental Sciences, Leiden University, PO Box 9518, Leiden, The Netherlands;
5 Department of Pharmacology and Toxicology, National Veterinary School of Maisons-Alfort, 7 Avenue du Général de Gaulle, 94700 Maisons-Alfort, France
7 Corresponding author (email: magvet{at}aol.com)

ABSTRACT:   A combination of medetomidine-tiletamine-zolazepam was used to conduct six immobilizations of free-ranging lions (Panthera leo) in Waza National Park, Cameroon, during 1999 and 2000. Drugs were administered by dart injection at 0.07±0.01 (mean±SD) mg/kg of medetomidine and 1.8±0.5 mg/kg of tiletamine-zolazepam. Chemical immobilization was characterized by smooth inductions (14.1±6 min), satisfactory analgesia, and muscle relaxation. One animal was treated for bradypnea. No major alterations of physiologic parameters (heart and respiratory rates, rectal temperature) were seen during immobilization in the other lions. Relative arterial oxygen saturation was measured in two animals and revealed mild hypoxemia. The animals received atipamezole at 0.3±0.1 mg/kg intramuscularly for reversal of anesthesia. Recoveries were uneventful. All animals were radiocollared, and no mortalities occurred during an 18-mo follow-up period. Use of medetomidine-tiletamine-zolazepam for anesthesia and reversal of anesthesia with atipamezole appear to be useful for reversible immobilization of free-ranging lions.
  Key words:  Anesthesia, atipamezole, immobilization, lion, medetomidine, Panthera leo, tiletamine, zolazepam.

6 Current address: MZT, PO Box 3863, Bulawayo, Zimbabwe






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