PD selection and benchmarking vaccination

Offentlig prosjektsammendrag

Pancreas disease is a major problem for the salmon farming industry in Norway. The disease causes considerable mortality as well as morbidity often in large fish at sea. Marine Harvest have been selecting for resistance against this virus (SAV3) for a number of years. A previous benchmark study demonstrated a significant difference between selected versus unselected smolt for susceptibility to the virus as well as difference between selected and vaccinated fish. This study, based on a SAV3 challenge test, will use the three PD vaccines currently on the market in Norway. For each vaccine and an unvaccinated group both high and low selected smolt will be used. This will allow us to investigate both the effect of the vaccines and also the effect of vaccination and selection together.