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Great demand for GS LICE

Using genomic selection (GS) as a tool, selection and breeding fish can be made at individual level.

BERGEN: We are in full activity with the seasonal roe supplies. Roe is packaged and sent from both Erfjord Stamfisk and Bolaks Stamfisk to customers along the entire coast. -We are experiencing busy and enjoyable days with many pleasant visits to customers, says SalmoBreed’s logistics manager, Lars Inge Vik.

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Logistics Manager Lars Inge Vik.

SalmoBreed’s customers have recently had access to the feature GS LICE. The family selection for lice resistant fish all the way back to 2007 is the basis of a good genomic selection, and SalmoBreed has a wide breeding material available. The product has been well received by customers. Even with the high demand, Sales and Marketing Manager Thoralf Solberg expects to be able to deliver throughout the whole season.

Thoralf Solberg

Breeding is an important non-medical measure and we have noticed great expectations regarding that, says Sales and Marketing Director Thoralf Solberg

Great interest

Lice is a topic that always comes up in discussions about the product, says Thoralf. Breeding is an important non-medical method measure and we have noticed great expectations regarding that. The use of drugs is expensive and it affects the environment and stresses the fish. When breeders also experience that louse develop resistance against available drugs, so it is clear that the need for alternative solutions is big. Breeding is prevention, not treatment. Less louse on fish reduces the handling needs. That means lower mortality, reduced stress, more feeding days and shorter production lead time. In short: better fish health and better production results.

Selecting the best individuals

Using genomic selection GS as a tool, selection and breeding fish can be made at individual level. It provides a number of advantages that increase progress on the desired properties relative to a pure family selection. The worst individuals can be excluded, and the best can be selected, also from all our families. The genetic progress from generation to generation will by means of GS be doubled in relation to the use of family selection alone.

Good results

Lice research has an important role when breeding material is going to be selected. Annually fish are tested from all new families that are in production, and DNA samples are taken of every individual. We have collected a large amount of material mapping the gene composition of fish with high resistance to sea lice infestation. In autumn, the first fish generation was selected with the help of GS lice in seawater, and Thoralf has great hopes for the outcome.

Presently there are no measures which alone can solve the problem, nor breeding. But from what we see in our research, we consider genomic selected fish as an important contribution to combat lice in an integrated manner.

For more information about genomic selection for lice resistant fish, watch our video and read the article “Arvesølv mot lus [Silver heirlooms against lice]“ from Norsk Fiskeoppdrett Expert nr 1/2016. Thoralf can be contacted at ( or tel 907 38 499.

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