Atlantic salmon farming involves welfare challenges across the entire production cycle, from smolt to harvest, requiring systemic approaches to achieve meaningful improvement.
Salmon welfare operates across interconnected systems — genetics, water quality, disease management, handling, and slaughter — where improvements in one area can be undermined by failures in another. The welfare case for systemic rather than piecemeal improvement is strong: a salmon that is well-managed throughout grow-out but experiences prolonged suffering at slaughter has had its life welfare undermined at the final step. Conversely, humane slaughter of salmon that have experienced chronic disease stress throughout their lives represents an incomplete welfare achievement. Integrated welfare programs that address stocking density, disease prevention, handling minimization, and humane slaughter simultaneously achieve qualitatively better outcomes than targeted single-issue interventions. Norway is the most advanced regulatory environment for salmon welfare; its standards are increasingly being adopted as global benchmarks.