Animal Agriculture and Antibiotic Resistance: A Welfare and Public Health Crisis

How routine antibiotic use in livestock farming drives antimicrobial resistance, threatening both animal welfare and human health.

Key Facts

Approximately 73% of all antibiotics used globally are consumed by farmed animals
Many antibiotics are used preventatively in groups of animals because of disease pressure from crowding
Methicillin-resistant Staphylococcus aureus (MRSA) livestock strains have spread to humans
Denmark reduced livestock antibiotic use by 50% and saw no significant drop in production outcomes
The WHO classifies antimicrobial resistance as one of the greatest global health threats

Welfare Considerations

The connection between animal welfare and antibiotic resistance is direct and important. High stocking densities and poor welfare conditions in intensive livestock farming create disease pressure that is managed through prophylactic and metaphylactic antibiotic use. This routine use selects for antibiotic-resistant bacteria that can spread to humans through food, environment, and direct contact. The welfare implication is circular: overcrowding leads to antibiotic use, antibiotic use drives resistance, resistance makes future disease harder to treat — reducing welfare and increasing mortality. Addressing welfare at the root (reducing stocking density, improving conditions) reduces disease pressure and antibiotic use simultaneously.

What You Can Do

Choose meat and dairy from operations that prohibit routine antibiotic use
Advocate for legislation that bans prophylactic antibiotic use in livestock farming
Support higher-welfare farming systems that reduce the disease pressure driving antibiotic use
Use antibiotics for your own health only as directed by a doctor and complete full courses
Learn about antimicrobial resistance and share its connection to livestock farming