Aquaculture Disease Management: Welfare and Antibiotic Stewardship

Disease management in aquaculture directly affects fish welfare and public health, with responsible antibiotic use and preventive medicine central to welfare-positive production.

Key Facts

Infectious diseases cause enormous welfare harm and economic loss in aquaculture globally
Antibiotic use in aquaculture contributes to antimicrobial resistance with both human health and welfare implications
Norway has reduced salmon antibiotic use by over 99% since the 1990s through vaccination programs
Sea lice infestations in Atlantic salmon cause chronic pain, skin damage, and immune suppression
Integrated pest management approaches combining biological, chemical, and physical controls are most effective

Welfare Considerations

Aquaculture disease prevention is both a welfare and public health priority. Fish suffering from bacterial, viral, or parasitic disease experience chronic pain, immune suppression, and reduced quality of life. Vaccine programs, improved biosecurity, selective breeding for disease resistance, and biological controls (wrasse cleaner fish for lice) reduce disease burden more sustainably than reactive antibiotic treatment. Antibiotic stewardship protects future treatment options for both fish and human medicine.

What You Can Do

Choose aquaculture products from producers with low antibiotic use records and vaccination programs
Support aquaculture research into disease-resistant genetics and non-antibiotic disease management
Advocate for mandatory antibiotic use reporting in aquaculture to enable stewardship monitoring