The relationship between antibiotic use in livestock and antimicrobial resistance is both a public health crisis and an animal welfare issue. Understanding this connection reveals aligned human and animal welfare interests.
Antimicrobial resistance creates a welfare feedback loop: overuse of antibiotics in poor welfare conditions drives resistance, which then makes animal diseases harder to treat, causing more and longer suffering. Farm animals with resistant infections experience prolonged illness because effective treatment options are reduced. The welfare cost of antibiotic treatment failure is direct: animals suffer more when infections cannot be controlled. Good welfare conditions that reduce disease pressure reduce the need for antibiotics, reducing resistance risk. This creates a genuine alignment between animal welfare improvement and antibiotic stewardship where investing in better housing, enrichment, and management simultaneously reduces animal suffering and protects the efficacy of antibiotics for both human and veterinary medicine.