Emerging technologies including underwater cameras, AI monitoring, and novel slaughter systems are transforming welfare assessment and outcomes in salmon aquaculture.
Salmon aquaculture welfare technology has advanced rapidly, driven by both ethical concern and the commercial reality that stressed fish have lower growth rates and higher mortality. The shift from visual inspection to continuous AI monitoring has transformed welfare assessment: algorithms trained on millions of hours of salmon footage can detect subtle behavioural changes indicating disease onset, oxygen stress, or crowding before these become clinically apparent. This early detection enables intervention before significant welfare harm accumulates. Slaughter technology has similarly improved: percussion stunners deliver reliable unconsciousness before slaughter, eliminating the prolonged distress of traditional CO2 or live chilling methods. Novel cage designs including deeper semi-closed systems reduce sea lice burden by keeping fish below the lice-dense surface layer, benefiting both welfare and productivity. The challenge now is ensuring that welfare technology adoption is not limited to large, well-resourced producers and that innovation is matched by regulatory standards that embed best practice across the industry.