Evidence on stocking density thresholds for farmed Atlantic salmon and welfare implications.
Key Facts
Norwegian regulations set maximum stocking density of 25 kg per cubic metre
Higher densities increase competitive stress and reduce welfare indicators
Optimal stocking density for welfare is typically below maximum permitted levels
Density-related fin damage and cortisol levels are welfare assessment indicators
Commercial pressure often drives stocking toward maximum permitted densities
Welfare Considerations
Stocking density is a primary determinant of salmon welfare, and operating below maximum permitted densities consistently delivers better welfare outcomes.
What You Can Do
Advocate for evidence-based stocking density reductions in aquaculture standards
Support research into welfare-optimal stocking densities for salmon
Choose salmon from farms with published stocking density and welfare data