Livestock Biosecurity and Animal Welfare

How effective biosecurity protects farm animal welfare by preventing disease introduction and reducing the need for mass culling.

Key Facts

Disease outbreaks including foot and mouth disease, avian influenza and African swine fever cause mass culling of millions of animals
Prevention through biosecurity is dramatically more welfare-effective than control through mass slaughter after an outbreak occurs
Biosecurity measures include vehicle disinfection, visitor protocols, stock sourcing controls and perimeter management
Avian influenza outbreaks in 2021-2023 resulted in the culling of over 50 million poultry in the UK alone
Live animal movements are the primary route for most economically significant livestock disease spread
Depopulation methods used in disease control including carbon dioxide gassing and foam asphyxiation have significant welfare implications

Welfare Considerations

Farm biosecurity is fundamentally a welfare intervention as well as an economic one. The scale of animal suffering caused by mass culling events in disease control - 50 million poultry killed in the UK during 2021-2023 avian influenza outbreaks, hundreds of millions of pigs culled during African swine fever outbreaks in Asia - dwarfs the welfare harm of most farm management practices. Each individual animal killed in a control cull has suffered an imposed death that good biosecurity could have prevented. The welfare case for rigorous biosecurity investment is therefore not merely economic but profoundly ethical - it prevents suffering at a scale that individual animal management improvements cannot approach.

What You Can Do

Implement and maintain a written biosecurity plan for your farm in consultation with your veterinary surgeon
Maintain a closed herd or flock where possible and apply strict health screening to any animals entering your system
Register with your national animal movement database and comply with tracing requirements that support outbreak containment
Participate in national surveillance programmes for your species - early detection reduces outbreak scale and culling numbers
Review your slaughter and depopulation protocols with your vet to ensure the most humane available methods are in place
Support investment in emergency vaccine banks for high-risk diseases that would allow vaccination-based control rather than mass culling