The relationship between antibiotic use in livestock, antimicrobial resistance, and animal welfare is complex and critically important. Understanding this relationship enables welfare-positive antibiotic stewardship approaches.
Antibiotic stewardship and animal welfare share more common ground than is often recognized in public debate. The narrative that reducing antibiotic use in livestock necessarily harms animal welfare misunderstands the relationship: antibiotics have been used in some farming systems as a substitute for the welfare improvements — better housing, lower stocking density, improved hygiene, effective biosecurity — that would prevent the diseases requiring treatment. In this context, reducing antibiotic use without improving underlying conditions does cause welfare harm; but reducing antibiotic use through genuine welfare improvement reduces both disease incidence and antibiotic need simultaneously, improving both. The EU ban on prophylactic antibiotic use represents a significant policy shift that incentivizes the disease prevention approach — investing in better conditions, vaccination, and biosecurity — over the treatment approach. UK progress in reducing livestock antibiotic use has been achieved through exactly this pathway: sector-specific reduction programs that combine stewardship education with welfare improvement investment. The alignment of antibiotic stewardship goals with welfare goals, properly understood, makes them mutually reinforcing rather than competing priorities.