Aquaculture and Antibiotic Resistance: A One Health Welfare Concern

Antibiotic use in aquaculture contributes to antimicrobial resistance that threatens both animal and human health, making stewardship an animal welfare as well as a public health priority.

Key Facts

Aquaculture accounts for a significant proportion of global veterinary antibiotic use
Antibiotics applied via medicated feed enter water environments affecting non-target bacteria and organisms
Antibiotic resistance genes transferable to human pathogens have been detected in aquaculture environments
Norwegian salmon farming reduced antibiotic use by 99% over 30 years through vaccination and improved husbandry
Asian aquaculture — particularly shrimp and catfish farming — uses significantly more antibiotics than European equivalents
Alternative disease management through probiotics, vaccination and biosecurity reduces dependence on antibiotics

Welfare Considerations

Aquaculture antibiotic stewardship is simultaneously an animal welfare, public health and environmental concern. Antibiotics used prophylactically in aquaculture often reflect poor husbandry conditions that cause disease — addressing root causes of disease through welfare improvement reduces antibiotic dependency while improving fish welfare. The Norwegian salmon industry demonstrates that dramatic antibiotic reduction is achievable through investment in vaccination and husbandry improvement. Extending this model globally requires regulatory requirements and technical support for producing countries.

What You Can Do

Choose aquaculture products from countries and certification schemes with strong antibiotic stewardship
Advocate for antibiotic use reporting requirements in aquaculture licensing
Support aquaculture development aid that transfers Norwegian vaccination technology to high-use countries
Encourage retailers to require supplier antibiotic use data and reduction targets
Follow One Health initiatives linking aquaculture antibiotic use to human antibiotic resistance