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Electrical stunning of red deer (Cervus elaphus)
D K Blackmore1, C J Cook, C E Devine
1Massey University, 371 Albert Street, Palmerston North, New Zealand.
New Zealand Veterinary Journal
|September 1, 1993
Summary
Electrical stunning of red deer (Cervus elaphus) is effective when head restraint is adequate. This method can be incorporated into humane slaughter practices for deer.
Area of Science:
- Veterinary Science
- Animal Welfare
- Agricultural Engineering
Background:
- Electrical stunning is a common method for slaughtering livestock.
- Its efficacy and humane application in red deer (Cervus elaphus) require specific investigation due to physiological differences.
Purpose of the Study:
- To evaluate the effectiveness and humane implications of head-only electrical stunning in red deer.
- To compare electroencephalogram (EEG) patterns during stunning in deer with those of other livestock.
Main Methods:
- Modified sheep stunning apparatus used on 23 red deer at a slaughter premises.
- Electroencephalograms recorded under controlled conditions for four deer stunned with specific electrical parameters (1.3 A for 0.5 or 1.0 seconds).
- Observation of behavioral signs and assessment of stunning effectiveness.
Main Results:
- Successful stunning achieved in 18 of 23 deer; failures linked to poor head restraint and electrode contact.
- Electrical stunning induced epileptiform seizures with distinct characteristics compared to sheep, cattle, and pigs.
- EEG confirmed seizure activity and unconsciousness lasting 54-122 seconds in four deer.
Conclusions:
- Head-only electrical stunning is a viable and humane slaughter method for red deer.
- Adequate head restraint is critical for successful electrical stunning in this species.
- Electrical stunning parameters can induce effective unconsciousness in deer.
