Aquaculture

Aquaculture: Trout Farm Slaughter Welfare

Slaughter method is a critical welfare point in trout farming, with significant variation in practice from rapid stunning to prolonged ice slaughter.

Key Facts

Rainbow trout are among the most produced farmed fish globally
Ice slaughter causes prolonged unconsciousness over many minutes - a welfare concern
Percussive stunning immediately renders fish insensible when applied correctly
Electrical stunning is used in some commercial facilities with variable efficacy
RSPCA Assured and ASC standards require pre-slaughter stunning for trout

Welfare Considerations

Ice slaughter results in slow loss of consciousness during which fish are likely to experience stress and pain. Percussive stunning when applied correctly is currently the best available rapid method for small-scale operations. Scaling up humane slaughter to all trout farms is a welfare priority.

What You Can Do

Choose trout from RSPCA Assured or certified welfare-assured sources
Ask retailers and restaurants about slaughter methods used for trout
Support research into automated percussive or electrical stunning systems for trout
Advocate for mandatory pre-slaughter stunning in aquaculture regulations