Biosecurity measures prevent the introduction of infectious diseases that cause welfare costs and are more effective than treating outbreaks after they occur.
Biosecurity investment prevents disease introductions that cause welfare costs across entire herds. A single BVD-positive animal introduced to a naive herd can infect the entire population with welfare consequences felt for years. Prevention through quarantine and testing costs less than managing outbreaks while delivering better welfare outcomes. Biosecurity is therefore both economically rational and welfare-positive.