Farmed Salmon Welfare at Slaughter

Slaughter methods for farmed salmon have significant welfare implications that are increasingly scrutinized by researchers and retailers.

Key Facts

Norway alone produces over 1.5 million tonnes of Atlantic salmon annually
Traditional slaughter methods included live chilling in ice slurry, which causes prolonged stress
Electrical stunning before slaughter can induce immediate unconsciousness
Percussive stunning (blow to the head) is effective but requires precision
RSPCA and Global Salmon Initiative have developed humane slaughter standards

Welfare Considerations

The capacity of fish to experience pain and stress is now widely supported by scientific evidence. Slaughter methods that cause prolonged conscious suffering — such as live CO2 stunning or ice slurry without prior anesthesia — are increasingly recognized as welfare failures. Electrical and percussive stunning, when properly applied, can induce immediate unconsciousness and are now required by several welfare certification schemes. Welfare at slaughter is the final intervention point in a farmed fish's life, making it ethically significant.

What You Can Do

Choose salmon from farms certified under humane slaughter standards
Ask retailers about their salmon welfare sourcing policies
Support research into fish pain and humane slaughter methods
Advocate for mandatory humane slaughter standards in aquaculture regulation
Reduce farmed salmon consumption or choose plant-based omega-3 sources