Water Quality
Major causes of non infectious diseases
Environmental (water quality, toxin), Nutritional, Genetic, Traumatic, Neoplastic
3 components of a quarantine program
Animal records
Quarantine procedures
Environmental Concerns
Nutritional Concerns
Vaccination Protocols
Sanitation Practices
Methods of Disease Surveillance
The purpose of sanitation/hygiene
prevent fish-to-fish tansmission
The barrier that prevents a pathogen from spreading on or off the property
External Barrier
A pathogen can be characterized by
identifiable signs/symptoms
Major cause of disease in fish
stress - water quality
biosecurity goal of pathogen management
preventing, reducing or eliminating pathogens
easiest to acquire and good all purpose disinfectant
Chlorine
Maintaining healthy stocks, avoiding introduction to infectious agents, and preventing spread of agents fall under
Disease Prevention
Define Disease
A condition regarded as harmful or abnormal, harmful; a pathological condition
bacteria common in aquaculture, are more opportunistic and cause disease only when environmental conditions are poor or when fish are stressed
Aeromonas and Vibrio
Duration of Quarantine
30 days
What do you do if a disease outbreak happens?
Recognize there is a problem, report to supervisor, tack action
Recognizing signs of illness, collecting appropriate samples, and diagnostic lab supports are part of
Disease Detection
goal of animal management as a part of biosecurity
obtaining healthy stocks and optimizing their health and immunity through good husbandry
Water sources most likely to harbor significant levels of disease organisms
surface water and shallow wells
What days are most crucial during quarantine?
7-21
3 actions to take in the instance of disease outbreak
collect sick animal
test the water
Determine if other areas are affected
conduct appropriate exam on site
Consider sample submission to a diagnostic lab
Based in accurate diagnosis, appropriate treatment, support animals while they recover are all part of
Disease Management
The most effective way to ensure biosecurity at an aquaculture facility is to develop a ____________________________ based on risk analysis.
written biosecurity program
Water from an unsafe source or system water can be sterilized with
ultraviolet (UV) light, ozone, or chlorine
How long should light be dimmed to minimize stress?
24hrs
Steps for disinfection protocol
1. Manually remove dirt and organic matter. 2. Clean vigorously with a detergent or soap and water. 3. Rinse. 4. Apply a disinfectant with appropriate contact time. 5. Rinse again or neutralize. 6. Dry completely (preferably in the sun)
Barrier used inside tanks/facilities
Internal barrier
What are the 4 categories of infectious disease?
Parasitic, Bacterial, Fungal, Viral