Lerang research laboratory focusing on innovations in sea lice defences

Since 2011, a state-of-the-art laboratory at our research station in Lerang, Norway, has been dedicated to developing management techniques to deal with sea lice infestations.

Skretting/Skretting “It is Skretting’s long-held belief that functional nutrition strengthens the immune system so fish can better cope and recover faster from disease and environmental challenges. Functional feeds are a key component to success-ful integrated pest management (IPM) strategy,” explains Julia Mullins, the laboratory’s lead co-ordinator.

At the laboratory, experimental conditions including light, water temperature, feed intake and infection challenge are rigorously controlled, thereby providing the most dynamic platform to conduct extensive evaluations of many natural, functional feed ingredients against sea lice.

Shield for sea lice reduction

This work led to the development of Shield, a complete feed that decreases the level of sea lice attachment and also supports fish defences. 

“Last year, we launched Shield. In 2017, we are working further on optimising the lice challenge model. It is a continual process. Sea lice are a naturally occurring problem; they are not going to go away, so we have to keep working on it,” says Mullins.

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UN SDG 3: 
Good health and well-being

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Skretting offers nutritional solutions that help farmers reduce their reliance on antibiotics without impacting growth.

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Trials show that salmon fed with SHIELD has 20% less lice attachments. This can mean less delousing and fewer starvation days.


Reduction of sea lice

Skretting's product Shield has been shown to have a marked impact on lice numbers through in-vitro and full-scale commercial trials in Scotland.

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Research facilities

Comprising indoor and outdoor facilities, our land-based fish and shrimp research stations enable us to closely monitor and control environmental conditions in order to conduct precise experiments on our latest formulations with a variety of aquaculture species. 

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Infinity encompasses MicroBalance®, MicroBalance FLX and N3, and is about the right nutrients, not specific raw materials. We can now replace feed raw materials without impacting performance, welfare or fish quality, providing unprecedented formulation flexibility, enabling salmon farmers to produce more from less, sustainably.

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