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Physiological evaluation of free-ranging moose (Alces alces) immobilized with etorphine-xylazine-acepromazine in Northern Sweden

Evans, Alina L.; Fahlman, Åsa; Ericsson, Göran; Haga, Henning Andreas; Arnemo, Jon Martin
Journal article, Peer reviewed
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URI
http://hdl.handle.net/11250/134510
Date
2012
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  • Artikkel - fagfellevurdert vitenskapelig / Articles - peer-reviewed [1252]
Original version
Evans, A., Fahlman, Å., Ericsson, G., Haga, H. A., & Arnemo, J. M. (2012). Physiological evaluation of free-ranging moose (Alces alces) immobilized with etorphine-xylazine-acepromazine in Northern Sweden. Acta Veterinaria Scandinavica, 54(77). DOI: 10.1186/1751-0147-54-77   http://dx.doi.org/10.1186/1751-0147-54-77
Abstract
Background

Evaluation of physiology during capture and anesthesia of free-ranging wildlife is useful for

determining the effect that capture methods have on both ecological research results and

animal welfare. This study evaluates capture and anesthesia of moose (Alces alces) with

etorphine-xylazine-acepromazine in Northern Sweden.

Methods

Fifteen adult moose aged 3–15 years were darted from a helicopter with a combination of

3.37 mg etorphine, 75 mg xylazine, and 15 mg acepromazine. Paired arterial blood samples

were collected 15 minutes apart with the first sample at 15–23 minutes after darting and were

analyzed immediately with an i-STAT®1 Portable Clinical Analyzer.

Results

All animals developed hypoxemia (PaO2 <10 kPa) with nine animals having marked

hypoxemia (PaO2 5.5-8 kPa). All moose were acidemic (ph<7.35) with nine moose having

marked acidemia (pH<7.20). For PaCO2, 14 moose had mild hypercapnia (PaCO2 6-8 kPa)

and two had marked hypercapnia (PaCO2>8 kPa). Pulse, respiratory rate, pH and HCO3

increased significantly over time from darting whereas lactate decreased.

Conclusions

The hypoxemia found in this study is a strong indication for investigating alternative drug

doses or combinations or treatment with supplemental oxygen.
Publisher
BioMed Central
Journal
Acta veterinaria Scandinavica

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