Farm biosecurity - preventing pathogen introduction to pig herds - is both a welfare imperative and a production priority, with disease prevention reducing suffering at scale.
Biosecurity is a welfare measure with leverage beyond the individual farm - high biosecurity across a region protects all farms and all pigs from disease incursion. Disease events like ASF cause welfare disasters through mass culling of clinically healthy animals as well as the severe clinical course in affected animals. Investment in farm-level biosecurity, industry-level surveillance and international disease control is directly proportional to welfare protection.