ACTA THERIOLOGICA SINICA ›› 2020, Vol. 40 ›› Issue (4): 407-412.DOI: 10.16829/j.slxb.150383

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Use of Large Animal Immobilon and M99 for general anesthesia in Asian elephants

BAO Mingwei, ZHOU Fangyi, XIONG Chaoyong, LI Derong, XU Dingze   

  1. (1 China Yunnan Asian Elephant Provenance Breeding and Rescue Center, Jinghong 666106, China)
    (2 Xishuangbanna Wild Elephant Valley Co. LTD, Jinghong 666106, China)
    (3 Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Beijing 100875, China)
    (4 Institute of Ecology, Beijing Normal University, Beijing 100875, China)
    (5 Xishuangbanna Animal Disease Prevention and Control Center, Jinghong 666100, China)
  • Online:2020-07-30 Published:2020-07-24


保明伟1, 2 周方易3,4 熊朝永1,2 李德荣5 许定泽1,2   

  1. (1 中国云南亚洲象种源繁育及救助中心,景洪 666106)
    (2 西双版纳野象谷景区有限公司,景洪 666106)
    (3 教育部生物多样性与生态工程重点实验室,北京 100875)
    (4 北京师范大学生态学研究所,北京 100875)
    (5 西双版纳傣族自治州动物疫病预防控制中心,景洪 666100)
  • 通讯作者: 保明伟 E-mail:

Abstract: Asian elephants (Elephas maximus) are the largest endangered land mammals in Asia. General anesthesia is required for their treatment, rescue, and live capture. From 2005 to 2019, using an anesthetic rifle and blow dart, 9 Asian elephants were anesthetized 12 times with 2.09±0.10 μg/kg (mean±standard error) etorphine hydrochloride and (8.54±0.40)μg/kg acetopromazine maleate compound (Large Animal Immobilon), or (3.47±0.15)μg/kg etorphine hydrochloride (M99); diprenorphine hydrochloride was used as an antagonist. In all cases, the animal was immobilized successfully, and no elephant died. The induction period lasted (11.00±0.71)min (Large Animal Immobilon) or (14.12±4.46)min (M99), and this was not significantly influenced by sex or age. During the induction period, the elephants were not excited. Activity and response to stimulation were gradually weakened, and the elephants fell to the side after losing consciousness. During the maintenance period, the vital signs of the elephants were monitored. The rectal temperature was found to be in the normal range, but tachycardia occurred occasionally. After the injection of the corresponding antagonist, the recovery period lasted 1-6 min, and the elephants might enter sleep after the recovery period.

Key words: Asian elephant, general anesthesia, etorphine, M99, Large Animal Immobilon

关键词: 亚洲象, 全身麻醉, 埃托啡, M99, 大动物保定灵