Salmon Pre-Slaughter Welfare Standards

Pre-slaughter welfare for farmed salmon has improved significantly through the adoption of electrical and percussive stunning methods, but standards vary widely between facilities.

Key Facts

Traditional bleeding without stunning was the dominant salmon slaughter method until recently
Electrical stunning renders fish insensible immediately when properly applied
Percussive stunning (computer-controlled mechanical blow) is highly reliable and welfare-positive
EFSA and the Norwegian Food Safety Authority have promoted welfare-positive slaughter standards
The RSPCA Assured salmon scheme requires pre-slaughter stunning as a welfare standard

Welfare Considerations

Pre-slaughter welfare for salmon represents one of the most significant welfare improvements achievable in aquaculture: the transition from conscious bleeding to pre-stun slaughter potentially benefits billions of fish annually. Electrical stunning renders fish insensible within 0.3 seconds; without it, fish remain conscious while being bled to death. The technology exists, is cost-effective at scale, and is increasingly required by welfare certification schemes. The barrier to universal adoption is market and regulatory pressure rather than technical feasibility.

What You Can Do

Choose RSPCA Assured or equivalent certified salmon requiring pre-stun slaughter
Ask retailers about their salmon supplier slaughter welfare standards
Advocate for mandatory pre-stun slaughter requirements in salmon welfare regulations
Support EFSA and FSA consultations on fish slaughter welfare standards
Engage food businesses on their salmon supply chain slaughter welfare policies