Aquaculture

Salmon Aquaculture Genetic Selection Welfare

Genetic selection in salmon aquaculture affects welfare outcomes through traits including growth rate, disease resistance, and stress tolerance.

Key Facts

Selective breeding has doubled salmon growth rate over 40 years
Faster growth correlates with some welfare-compromising metabolic disorders
Disease resistance traits in breeding programs reduce welfare-harming disease incidence
Stress tolerance selection can improve welfare by reducing cortisol responses

Welfare Considerations

Salmon selected for maximum growth rate develop spinal deformities, heart and skeletal muscle inflammation, and other conditions linked to rapid growth at welfare cost. Including welfare-related traits including disease resistance and stress tolerance in breeding programs produces fish with better welfare outcomes than growth-only selection. Breeding programs considering welfare are both ethically and commercially beneficial.

What You Can Do

Support salmon from breeding programs incorporating welfare traits
Advocate for welfare-inclusive breeding standards in aquaculture regulations
Back research into genetic factors affecting salmon welfare
Choose certified salmon from operations with documented breeding welfare considerations