Shrimp slaughter methods have welfare implications given growing evidence of crustacean pain capacity.
Shrimp killed by slow immersion in ice water experience gradual cooling that may prolong the dying process if they have pain capacity. Rapid killing methods including high-power electrical stunning are preferred under precautionary welfare principles. The inclusion of decapods in UK welfare legislation creates legal obligation to consider welfare in shrimp killing. The industry is gradually adopting more humane approaches under regulatory and consumer pressure.