Original Research

Anaesthesia of nyala (Tragelaphus angasi) with a combination of thiafentanil (A3080), medetomidine and ketamine

D.V. Cooper, D. Grobler, M. Bush, D. Jessup, W. Lance
Journal of the South African Veterinary Association | Vol 76, No 1 | a388 | DOI: https://doi.org/10.4102/jsava.v76i1.388 | © 2005 D.V. Cooper, D. Grobler, M. Bush, D. Jessup, W. Lance | This work is licensed under CC Attribution 4.0
Submitted: 12 June 2005 | Published: 12 June 2005

About the author(s)

D.V. Cooper,
D. Grobler,
M. Bush,
D. Jessup,
W. Lance,

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Abstract

A combination of thiafentanil (A3080), medetomidine hydrochloride (MED) and ketamine hydrochloride (KET) was evaluated in 19 boma-habituated (12 female and 7 males) and 9 free-ranging nyala (7 male and 2 females) (Tragelaphus angasi) to develop a safe and reliable anaesthesia protocol. Wide dosages were used safely during this study with ranges for A3080 of 45 + 8 mg/kg with MED of 69 + 19 mg/kg and KET of 3.7 + 1.0 mg/kg (200 mg/ animal). The dosages developed on boma-habituated nyala proved to be equally effective in 9 adult free-ranging nyala (7 males and 2 females). The optimum dosage for nyala was a combination of A3080 (40-50 mg/kg), MED (60-80 mg/kg) plus 200 mg of KET/animal. The anaesthesia was characterised by a short induction, good muscle relaxation and mild hypoxaemia during monitoring the anaesthesia was rapidly and completely reversed by naltrexone hydrochloride (30mg/mgof A3080) and atipamezole hydrochloride (5mg/mg of MED) given intramuscularly. There was no mortality or morbidity associated with this protocol.

Keywords

A3080; Anaesthesia; Atipamezole Hydrochloride; Ketamine Hydrochloride; Medetomidine Hydrochloride; Naltrexone Hydrochloride; Nyala; Thiafentanil; Tragelaphus

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