Aquaculture Welfare

Salmon Pre-Slaughter Welfare Indicators

Identifying reliable welfare indicators before slaughter in farmed salmon helps ensure humane end-of-life handling and informs industry best practices.

Key Facts

Pre-slaughter crowding is a major welfare challenge for salmon
Cortisol levels spike significantly during crowding stress
Gill cover movement rate is a practical real-time stress indicator
Water oxygen levels must be maintained during crowding
Effective stunning renders fish insensible within seconds

Welfare Considerations

The final hours before slaughter are among the most stressful for farmed salmon. Welfare indicators measured at this stage - including behavior, physiology, and responsiveness - provide actionable data for improving stunning protocols and handling procedures.

What You Can Do

Support aquaculture certification standards with pre-slaughter welfare criteria
Choose salmon certified to welfare standards
Advocate for mandatory stunning before slaughter in all fish farms
Encourage research into salmon pre-slaughter welfare monitoring