Injection vaccination is very effective but has many dangers and problems associated with it - please contact AVL for advice. Allow sufficient time for immunity to develop Immunity develops over a period of time after vaccination. The rate will be determined by the temperature at the time of vaccination and the method used. At normal temperatures the response to immersion vaccination takes some 14 days to develop during which time stress must be avoided. Avoid stress during and after vaccination Over crowding Handling and Grading Extremes of temperature Poor water quality Parasites or other causes of disease Booster vaccination programmes Consider all the factors and be prepared to implement a programme of booster vaccination to ensure full immunity through out the production cycle.
Booster vaccination is standard practice for nearly all farm animals - including fish.
Prepare for the vaccination strategy To ensure optimum results from the chosen vaccination strategy, ensure that the fish, farm staff and equipment are well prepared for the task ahead. The timing and implementation of the full strategy should be agreed with AVL's technical experts and the farm veterinarian well before implementation. These experienced professionals will help the farm to avoid any of the pitfalls that can occur during vaccination. They will ensure that the correct product is available at the right time and that all of the critical issues have been considered.