How electrical, gas, and mechanical stunning methods work, their welfare implications, and the ongoing debate around religious slaughter exemptions.
Pre-stunning is the most significant welfare protection at slaughter, preventing conscious animals from experiencing the pain and distress of the killing process. However, stunning effectiveness varies dramatically - incorrectly applied, it may result in animals regaining consciousness before death. Gas stunning of poultry with CO2 causes distress during induction. Non-stunned religious slaughter, while culturally significant, results in animals experiencing throat cutting while conscious. The welfare field broadly supports stunning while seeking culturally respectful solutions.