How disease outbreaks in shrimp aquaculture cause massive welfare harm and how management approaches can reduce suffering.
Shrimp disease outbreaks represent welfare events at extraordinary scale — a single pond outbreak affecting millions of individuals within days. White spot syndrome produces acute physiological distress in infected animals before mortality. Treatment responses including chemical disinfection cause their own acute welfare harm to surviving individuals. The welfare-preventive approach — biosecurity measures, lower stocking densities, and water quality management that reduces disease vulnerability — is simultaneously the economically rational long-term approach. Closed recirculating systems eliminate the major disease pathways at higher capital cost but dramatically better welfare outcomes. The shrimp aquaculture welfare calculus is fundamentally about shifting from reactive disease management to preventive welfare management.