Farm Animals

Antibiotic Growth Promoters: Welfare, Resistance, and Reform

Sub-therapeutic antibiotics given to healthy farm animals to accelerate growth drive antimicrobial resistance while masking poor welfare conditions that cause disease in the first place.

Key Facts

Growth-promoting antibiotics were used in over 40% of global antibiotic consumption in some estimates
The EU banned growth-promoting antibiotic use in 2006; the US restricted them in 2017
Tetracyclines, macrolides, and penicillins given below therapeutic dose select for resistant bacteria
Higher welfare systems with lower stocking densities and better husbandry use fewer antibiotics
Denmark demonstrated that removing growth promoters improved rather than harmed pig production outcomes

Welfare Considerations

Animals receiving growth promoters to compensate for poor husbandry are receiving treatment that addresses symptoms rather than causes. The underlying welfare problems — overcrowding, stress, poor ventilation — remain. Better welfare reduces antibiotic dependency genuinely rather than masking the welfare deficit with pharmaceutical compensation.

What You Can Do

Choose antibiotic-free or responsibly antibiotic-used certified meat and dairy
Advocate for complete global bans on growth-promoting antibiotic use in livestock
Support ONE Health approaches connecting animal welfare, antibiotic stewardship, and human health
Donate to Alliance to Save Our Antibiotics advocacy campaigns