Ocean Forest

Harald SveierTechnical Manager /Manager

Lerøy Seafood Group ASAOcean Forest AS

• 165.000 ton salmon and trout

• 300.000 ton of white fish (10

trawlers)

• 3500 employees

• Turnover: 17,3 billion NOK

(2016)

2

Lerøy Aurora

Lerøy Midt

Lerøy Sjøtroll

• Standard cage has a diameter of 50

meters and is 20-30 meters deep.

• Max biomass is 2,5% of the volume

(50.000 m3 , 97,5% is water)

• Max no of fish per farm is 200.000.

• Each pen can hold about 1000 tons of

fish –equal to 2000 cows of 500 kg!

• The license given by the government is

limit to max biomass per site (MTB)

• In all, 60 different regulations regulates

the production on each farm.

Salmon farming in 3 min…

20.000 cow’s…..

a collaboration between

This is what Ocean Forest do….

3 focus areas

1. Capture of N, P and CO2 .

2. Production of marine raw materials for

fishfeed.

3. New species in aquaculture

• industrial «mass production».

Why is this so important?

• We want to reduce our footprint.

• We want to secure our future as

fishfarmer.

• We take our part of the responsibility

for feeding a growing population.

From 0 to 50 cm in 3 month

9

• In 2030 there will be a shortage of

50,6 mill tons of fish for human

consumption (FAO;2014)

• Aquaculture• - a question about sustainable

food production to a growing

population.

Source: FAO

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• Where in the foodweb should we

harvest?

• For each step up, the quantity of

resources available is reduced by

90%

• Cultivation (add resources) or

harvesting?

Source: Havforskningstema 1-2006

Locations

Ocean Forest – a member of the Lerøy familiy

Tare er en plante….

Two ways of seeding, direct seeding on the carring rope or twin seeding where the

algae is precultivated in 4-6 weeks in tanks before transfer to open sea

Direct seeding dipping the rope in a solution of seed Twin seeds on a carring rope

Very high growth rate

20/10-15 -> 6 /4-16

How much Nitrogen, Phosphor and CO2 can

we catch?

• 2,4 kg Nitrogen per ton wet

weight of sugerkelp.

• 340 gr phosphor per ton wet

weight of sugerkelp.

• 26,3 kg C per ton wet weight

equal 100 kg CO2 per ton wet

weight.

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Blue mussel as feed ingredients.

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Blue mussel protein works very well as a fish meal

replacer

SGR = specific growth rate (%/day)

• Hvor skal vi produsere?

• Hvem vil kjøpe taren og

hvor mye vil de betale?

Ingen utfordringer??

Thank you for your

attention!