Salmon RAS Land-based Aquaculture Welfare

Recirculating aquaculture systems (RAS) promise environmental benefits for salmon farming but present distinct welfare challenges requiring research attention.

Key Facts

RAS systems recycle water continuously, eliminating sea lice and reducing environmental impact
Water quality parameters in RAS including CO2, temperature, and dissolved oxygen require precise management
Gas supersaturation in poorly managed RAS causes gas bubble disease, a serious welfare problem
Stocking densities in RAS can be higher than sea cage systems but management quality varies
RAS salmon show different behavioral profiles to sea cage fish requiring specific welfare assessment

Welfare Considerations

RAS systems offer significant environmental advantages over sea cage aquaculture but are not inherently better welfare systems - they require different management expertise and present distinct welfare risks. Welfare assessment frameworks specific to RAS are needed.

What You Can Do

Support research into RAS-specific salmon welfare indicators and management
Advocate for RAS welfare standards in aquaculture certification
Purchase RAS salmon from producers with transparent water quality and welfare monitoring