Tunicate meal tested for feed pellet quality

When developing a new ingredient for use in fish feed, there is many parameters that needs to be scrutinized. And tunicate meal are no exception. During the last three years Marine Feed has tested the feed in three larger projects and more test are under process or evaluation.

A recent post from the industry newspaper Fish Farming Expert interview the expert Tor Andreas Samuelsen from the Norwegian research institute NOFIMA. Their work focus on different quality paratmeters of the feed pellet during and after process in an extruder.


One of the results was that feed pellets with a large percentage of tunicate meal had large pores and they also found that 50 % of the fish meal in standard feed can be replaced with tunicate meal without compromising the quality of the feed.

Fish feed pellets and fish in test tanks
Fish feed pellets from a test with tunicate meal at NOFIMA in 2019.

Tunicate meal vs fish meal

Yearly fish meal production in EU, within EU28 countries, is 496.000 tonnes/year, assuming a protein concentration of 60-72%.

The Ciona cultivation yield in Swedish waters are 58 ton meal/ha, with a 43% protein content in dry matter.

If we aim to replace all fish meal : 130km2 are needed which equals an 11 x 11 km area

If we aim to exchange 20% of the fish meal proteins; then 26km2 are needed = 5 x 5 km area

We believe that is doable.

Ciona culture in Sweden

Contact us

Fredrik Norén, Founder, RnD manager, fredrik@marinefeed.com

Olle Stenberg, CEO, olle@marinefeed.com

Visting & postal adress

Marine Feed Sweden AB
Ängsvägen 12
SE-444 31 Stenungsund

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Supporting funding

EU project: EUFutureAqua

EU project: AquaBioProFit

Swedish VINNOVA: 5-tonnes-green-fish-in-dish

Swedish HaV: Blue nutrient harvest

EIT Food: Rising Food Stars