Aquaculture

Farmed Salmon Brain Welfare Assessment

Brain activity monitoring in farmed salmon offers new insights into welfare states during key husbandry events. Research is informing more humane practices.

Key Facts

Electroencephalography (EEG) techniques adapted for fish are providing real welfare data
Brain activity patterns show distinct responses to crowding, netting, and handling events
Cortisol release and brain activity combined provide more complete welfare state assessment
Salmon show habituation to repeated mild stressors but not to severe welfare events
Pre-slaughter anesthetic exposure correlates with reduced brain activity and welfare indicators

Welfare Considerations

Advances in salmon brain welfare assessment are transforming what we can know about fish welfare during commercial aquaculture practices. Previously, welfare was inferred from behavioral and physiological indicators alone. Direct brain activity monitoring reveals welfare states that behavior may not reflect, informing more targeted improvements.

What You Can Do

Support research funding for fish brain welfare assessment techniques
Choose salmon from certified suppliers using welfare monitoring technology
Advocate for science-based welfare monitoring standards in aquaculture regulation
Learn about fish cognition and welfare science to inform your seafood choices