The overuse of antibiotics in farm animals to prevent disease in poor conditions links animal welfare directly to the global public health threat of antimicrobial resistance.
The link between antibiotic use and animal welfare is bidirectional. Poor welfare conditions increase disease susceptibility requiring antibiotic treatment. Antibiotics used prophylactically mask welfare problems that should instead be addressed through improved husbandry. Reducing antibiotic use sustainably requires improving the conditions that make animals sick in the first place. This creates a positive welfare-public health alignment: what is good for animal welfare is also good for protecting antibiotic efficacy.