Disease management in farmed shrimp production involves welfare tradeoffs between the suffering of diseased shrimp, the methods used for disease control, and the welfare of the broader aquatic ecosystem.
Shrimp dying from disease face welfare harm whose significance depends on the contested question of crustacean sentience. The scale is enormous — disease outbreaks can kill entire pond populations of millions of individuals. Prevention through biosecurity, improved water quality management, and immune-stimulating probiotics reduces disease incidence and the associated welfare harm under precautionary assumptions. Supporting research into both shrimp sentience and disease prevention simultaneously addresses the ethical uncertainty while improving outcomes across both welfare and production dimensions.