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A malfunction in the production of salmon eggs has occurred in the Aqua Gen plant at Hemne. The unit represents one of five production lines of eggs in the Aqua Gen system. The production in the other plants goes according to schedule.

This will have consequences for the planned delivery of eggs in week 46-50, but reduced deliveries of early eggs will be compensated with increased deliveries later on in the season.
The main causes of the production problems in Hemne are as follows:

• A mild autumn with high freshwater temperatures and low cooling capacity did not give optimal temperatures for all the male brood fish. This resulted in uneven sperm quality followed by unsuccessful fertilization in the production of early eggs.

• In the end of October we had a pump failure which stopped the water supply to parts of the unit. With replacement of water source, air suction led to release of mud into the tubes. This had a negative effect with respect to more growth of fungus in the egg incubators and increased mortality among brood fish.

Access of off season eggs gives better exploitation of the hatchery capacity and flexibility in the overall production of smolts. This years’s problems in the production of early eggs will not reduce Aqua Gen’s effort to be a provider of eggs with a wide delivery window in the future.