Salmon Welfare: Delousing Treatment Stress Management

Overview of welfare management during sea lice delousing treatment operations in salmon farming.

Key Facts

Delousing treatments include freshwater bathing, thermal treatment, and mechanical removal
All treatment methods cause handling and physiological stress in salmon
Duration minimisation and appropriate water quality management reduce treatment welfare costs
Treatment coordination across farm clusters reduces treatment frequency and total welfare burden
Pre-treatment welfare assessment enables better-informed treatment decisions

Welfare Considerations

Sea lice delousing treatment welfare requires minimising stress during necessary treatment operations. All treatment methods cause welfare costs through handling, physical processes, and physiological stress responses. Welfare management during treatment includes minimising crowding duration, maintaining water quality, and monitoring fish behaviour throughout. Pre-treatment welfare assessment identifies fish condition for treatment decision-making. Coordinating treatments at appropriate times and minimising unnecessary repetition reduces total welfare burden.

What You Can Do

Support development of welfare protocols for salmon delousing operations
Advocate for welfare assessment requirements before and during delousing
Choose salmon from certified operations with documented treatment welfare management