Slaughter is the final welfare event in farmed salmon production; the method used determines whether death is rapid and humane or prolonged and distressing.
The slaughter stage represents a brief but welfare-significant event in farmed salmon production. Compared to the months or years of growing conditions, slaughter is momentary — but the experience of that moment matters morally, and the difference between a humane and inhumane death is the difference between negligible distress and significant suffering. Traditional methods including carbon dioxide immersion and asphyxiation on ice involve prolonged conscious experience during induction that causes distress by any reasonable welfare assessment. Electrical stunning, when correctly applied at species-appropriate parameters, induces insensibility rapidly and effectively. The regulatory gap between requiring stunning — as Norway does — and recommending it without mandate leaves welfare outcomes dependent on voluntary industry commitment. Consumer demand for welfare-assured seafood and retailer sourcing commitments create market pressure that complements regulatory advocacy.