Blog Details

As the livestock sector works to reduce its reliance on antibiotics, biosecurity has moved from a background concern to a central pillar of animal-health strategy. The logic is simple: preventing disease from entering and spreading on a farm reduces the need to treat it. Effective biosecurity protects animal welfare, safeguards productivity, and supports responsible antimicrobial stewardship.

External biosecurity: keeping disease out

External biosecurity focuses on the farm's boundaries — controlling the people, animals, vehicles and equipment that could carry pathogens onto the site. Clear entry protocols, dedicated clothing and footwear, quarantine of incoming animals, and vehicle disinfection dramatically reduce the risk of introducing new disease.

Internal biosecurity: limiting spread

Once a pathogen is present, internal biosecurity limits how far it travels. All-in/all-out management, careful movement of staff between age groups, cleaning and disinfection between batches, and prompt isolation of sick animals all slow or stop transmission within the farm.

• Establish controlled entry with hygiene barriers, clothing changes and visitor logs
• Quarantine and test incoming animals before mixing them with the herd or flock
• Apply all-in/all-out flow with thorough cleaning and disinfection between batches
• Manage pests, wildlife and water sources as potential disease vectors
• Train and audit staff regularly — protocols only work when they are followed

Every disease you keep off the farm is a treatment you never have to give.

VPhS Technical Team

Conclusion

Biosecurity is the foundation of antimicrobial stewardship. By investing in robust external and internal measures — and by making them a consistent daily habit rather than an occasional effort — producers can keep animals healthier, use fewer antibiotics, and build a more resilient business.