US catfish farming faces specific welfare and production challenges related to summer oxygen depletion, bird predation management, and the welfare implications of harvest and processing operations.
US catfish farming welfare encompasses routine production challenges alongside acute welfare events from oxygen depletion and harvest crowding. The overnight oxygen crash associated with algae die-off is particularly welfare-concerning because it can affect thousands of fish simultaneously before farm workers detect the problem. Emergency aeration systems and automated oxygen monitoring that triggers alarms can reduce the welfare harm from these events. Harvest welfare, involving seining that concentrates fish to extreme densities before pump transfer, is a high-stress event for all fish involved regardless of subsequent welfare in transit. The management of fish welfare during the critical transition from pond to processing is an area where the catfish industry could improve welfare significantly through reduced crowding duration and better oxygen management during transfer.