Aquaculture Welfare

Aquaculture: Salmon Hatchery Welfare Early Life

The hatchery phase of Atlantic salmon production sets the foundation for lifetime welfare, with early life conditions having lasting physiological effects.

Key Facts

Atlantic salmon eggs hatch in freshwater hatcheries where conditions are precisely managed
Early life crowding and stress can cause epigenetic changes affecting lifelong stress responses
Alevin (newly hatched salmon) are particularly vulnerable to water quality and handling stress
Optimal incubation temperature, water flow, and oxygen management are critical welfare parameters
First feeding management including feed particle size and feeding frequency affects early welfare

Welfare Considerations

Early life conditions in salmon hatcheries have lasting welfare consequences through epigenetic programming of stress responses. Salmon that experience chronic stress as alevins and fry have amplified cortisol responses throughout their lives, affecting welfare, health, and immune function in sea water. Investment in hatchery welfare quality pays dividends across the entire production cycle.

What You Can Do

Support welfare standards for salmon hatcheries as part of whole life-cycle certification
Advocate for early life welfare requirements in salmon aquaculture regulation
Choose salmon from certified farms with documented hatchery welfare protocols
Support research into lasting epigenetic effects of early life conditions in farmed salmon
Learn about hatchery welfare as the foundation of salmon aquaculture welfare