Biosecurity For Tilpia Industry

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By Nick Stinton, Cefas.

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Biosecurity For Tilpia Industry

  1. 1. BIOSECURITY FOR THE TILAPIA INDUSTRY NICK STINTON FISH HEALTH INSPECTOR
  2. 2. BIOSECURITY FOR THE TILAPIA INDUSTRY • SO WHAT IS BIOSECURITY ? • WHY DO I NEED BIOSECURITY ? • PREVENTION IS BETTER THAN THE CURE!! • HOW WILL DISEASES ENTER MY SITE?
  3. 3. SO WHAT IS BIOSECURITY?
  4. 4. SO WHAT IS BIOSECURITY? MORE THAN JUST FOOT DIPS!!
  5. 5. SO WHAT IS BIOSECURITY? BIOSECURITY = RISK ANALYSIS COMBINED WITH PRACTICAL, PROCEDURAL AND PHYSICAL MEASURES
  6. 6. WHY DO I NEED BIOSECURITY ? Financial impacts • Direct impacts – Loss of stock – Loss of ‘work-hours’ – Treatment costs – Replacement stock • Indirect impacts – Reduced productivity = increased production costs – Protracted production cycles
  7. 7. WHY DO I NEED BIOSECURITY ? Gaps in production • Honouring orders/contracts – Customer relations – Sourcing alternative stock • Husbandry complications – Holding ‘back’ batches – Treatment withdrawl periods – Disease spreading to healthy stock
  8. 8. WHY DO I NEED BIOSECURITY ? Welfare Distress
  9. 9. WHY DO I NEED BIOSECURITY ? • Financial impacts • Gaps in production • Welfare • Distress
  10. 10. PREVENTION IS BETTER THAN THE CURE!! • Often no cure for the most serious diseases e.g. viral diseases such as KHV in carp production! • Treatable diseases are often too difficult or impractical to treat! • Can treatments be used? • Control of spread of disease in a recirculation system? • Irradication of disease in a recirculation system?
  11. 11. HOW WILL DISEASES ENTER MY SITE? • Water • Staff • Visitors • Other • Introductions
  12. 12. HOW WILL DISEASES ENTER MY SITE? Water • Is your supply clean/been in contact with possible contamination? • Is it adequate? • Can you do anything? • Know your supply
  13. 13. HOW WILL DISEASES ENTER MY SITE? Staff • Do your staff work with any other fish sp? • Do you have disinfection procedures? • Are they used? • Are your staff adequately trained?
  14. 14. HOW WILL DISEASES ENTER MY SITE? Visitors • Can they gain direct access to your site? • Do you restrict access? • Do you have any signs or notices? • Do they sign in? • Where have they been? • Do you have disinfection procedures?
  15. 15. HOW WILL DISEASES ENTER MY SITE? Other • Rodents/vermin? • Shared/second-hand equipment?
  16. 16. HOW WILL DISEASES ENTER MY SITE? Stock • Any movement is a risk! • Be cautious of cheap deals • Can/is it possible to preview your potential stock? • Purchase stock from a trusted supplier • Limit the number of suppliers • Quarantine before placed onto a common recirculation system?
  17. 17. BIOSECURITY • Risk assessment • Identify risks • Quantify risks • Biosecurity measures • Put in place measures to reduce/remove risks • Document your measures • Ensure staff are trained • Enforce
  18. 18. MORE THAN JUST DISEASE Pathogen Environment Stress = DISEASE
  19. 19. MORE THAN JUST DISEASE • PATHOGEN • Keep out • Manage any present pathogens • ENVIRONMENT • Good water quality • Appropriate habitat • Sufficient food • STRESS • Appropriate mix of species • Not over stocked • Handling • Not held in keepnets too long or too many

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