Aquaculture and Fish Welfare

Farmed Prawn Welfare: Pre-slaughter Stunning

Farmed prawns and shrimp are typically killed without stunning, often by ice slurry or boiling. Evidence of crustacean sentience is driving development of humane slaughter standards.

Key Facts

Ice slurry immersion causes gradual cooling that may not render prawns insensible immediately
High-pressure processing kills prawns rapidly and may be a more humane method
Electrical stunning designed for crustaceans can render prawns insensible before killing
UK law does not currently require stunning of crustaceans at slaughter
Academic evidence increasingly supports nociception and stress responses in shrimps and prawns

Welfare Considerations

If prawns can suffer, their slaughter without stunning represents a welfare failure at enormous scale. The precautionary principle supports development and adoption of humane slaughter methods pending definitive sentience evidence.

What You Can Do

Support organisations developing humane crustacean slaughter standards
Advocate for welfare at slaughter requirements that extend to crustaceans
Stay informed about emerging evidence on crustacean sentience and its welfare implications