Aquaculture Welfare

Farmed Trout Slaughter Welfare Methods

Slaughter methods for farmed trout vary widely in welfare standards, with many commercial operations using methods causing prolonged suffering.

Key Facts

Carbon dioxide narcosis prior to slaughter is widely used for trout but causes distress
Electrical stunning is effective but requires species-specific current parameters
Percussion stunning is effective for individual fish but impractical at commercial scale
Ice slurry killing is widespread but does not cause rapid loss of consciousness
Trout welfare at slaughter receives less attention than salmon despite similar capacity for pain

Welfare Considerations

Trout are sentient fish with the capacity to suffer, yet slaughter methods for trout are often less humane than those now required or recommended for salmon. Carbon dioxide causes significant distress and is not a welfare-positive slaughter method. Electrical stunning that immediately renders fish unconscious before killing is the most welfare-positive commercially available method.

What You Can Do

Support welfare standards for trout slaughter equivalent to those for salmon
Choose trout products from farms using electrical stunning or other humane methods
Advocate for mandatory stunning requirements in freshwater aquaculture regulations