Remote chemical immobilisation method for free‐ranging Australian cattle

Hampton, Jordan O.; Skroblin, Anja; Perry, AL; Ridder, Thomas R De

doi:10.1111/avj.12531

Cited by 2 publications

(1 citation statement)

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“…Our first paper this month describes a simple technique of chemical immobilisation of free-ranging Australia cattle, using a mixture of xylazine and ketamine, with yohimbine as a reversal agent. 1 Chemical immobilisation is more difficult in cattle than in other wildlife species because of the requirements to only use drugs that are legally acceptable for food-producing animals and these legislative requirements, including the use of unregistered or compounded pharmaceuticals, vary between jurisdictions. Xylazine alone has been used, but is less effective in excited or aggressive free-ranging cattle and the higher dose needed leads to unacceptable deaths.…”

Section: Production Animalsmentioning

confidence: 99%

In this issue – December 2016

Jackson¹

2016

Aust Veterinary J

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Section: Production Animalsmentioning

confidence: 99%

In this issue – December 2016

Jackson¹

2016

Aust Veterinary J

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Minimising mortalities in capturing wildlife: refinement of helicopter darting of chital deer (

Hampton

Amos²,

Pople³

et al. 2020

Wildl. Res.

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ContextHelicopter darting has been used to capture wild deer, but this method has never been used for chital deer (Axis axis). AimThe aims of this study were to develop, assess and refine a helicopter darting technique for wild chital deer in northern Australia by quantifying: (1) reliable pharmacological doses for immobilisation; (2) the efficacy of the technique (including the duration of procedures); and (3) the frequency of adverse animal welfare events. MethodsThe study was conducted in three stages: an initial protocol (n=25 deer captured) in July−August 2018; a refined second protocol implemented in June 2019 (n=12 deer captured); and a further refined third protocol implemented in June 2019 (n=12 deer captured). Parameters to estimate the duration of procedures were measured and the frequency of several adverse animal welfare events during capture were quantified: mortality (at the time of capture and within 14 days of capture), hyperthermia, hypoxaemia, dart inaccuracy and manual restraint. Finally, GPS location collars with a mortality-sensing function were used to monitor post-release mortality. ResultsMortality within 14 days of capture was 40% for the first stage, 25% for the second stage and 17% for the third stage. Considerable refinement of procedures occurred between stages in consultation with an Animal Ethics Committee. One-third of all 15 mortalities occurred at the time of capture and were attributed to ballistic trauma from dart impact and acute capture myopathy. The majority (n=10) of mortalities, however, occurred post-release and were only detected by mortality-sensing GPS location collars. These post-release mortalities were attributed to capture myopathy. ConclusionsHelicopter darting of wild chital deer poses animal welfare risks, but these can be minimised through the selection of the most appropriate pharmacological agents and attempts at preventing factors such as hyperthermia and hypoxaemia that contribute to the development of capture myopathy. Further research into capture protocols is needed for helicopter-based immobilisation of chital deer. Fitting animals with GPS location collars enabled post-release mortality, which was significant, to be evaluated.

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Remote chemical immobilisation method for free‐ranging Australian cattle

Cited by 2 publications

References 30 publications

In this issue – December 2016

In this issue – December 2016

Minimising mortalities in capturing wildlife: refinement of helicopter darting of chital deer (

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