Local raw materials for production of fish feed for ... - Nordic Innovation

Processing of seaweed, results in “offal”-substances that may be used for aquaculture feeds. Sea
weed remove nutrients from the water and utilization of sea weed as a nutrient and/or for
aquaculture feed purposes will contribute to sustainable utilization. Matorka has been preparing a
feed trial with different sea weed strains that will be collected in Breidafjördur West-Iceland in
collaboration with the feed company Fodurblandan and a sea weed harvester.
10.4 Squid meal
In some areas (incl. the North Atlantic) squid are available in such abundance that they can be
harvested and used for production of squid meal and squid oil. Squid meal is an excellent
supplemental source of protein that equals or exceeds that of fish meal in aquaculture feeds.
Analysis of squid meal has shown the following contents:
Protein 45 – 80%
Lipids 4 - 5%
Dry matter 90 – 92%
Ash 4 – 5%
Chlorides 3 – 4%
10.5 Mussel meal
Mussels are filtrating algae and organic particles (filter feeders) and using mussels as a protein
source for fish feed may contribute to ecological balance of the marine environment. However, the
content of dry matter of 6-8 % (of whole mussel) may be a challenge for sustainable production of
mussel meal. But purchasing of N-kvota and/or compensating farming of mussels in connection to
marine fish farming (net cages) may contribute to reduce the costs of production. By harvest of 1
ton of mussels about 15 kg nitrogen and 1 kg phosphorus is removed from the water.
Mussels have a protein content of about 15%, a low fat content (about 2-3%) and a high content of
Ω-3 fatty acids, selenium and zinc.
Raw material for production of mussel meal may come from:
Fishery
Processing industry
Mussel farming
Compensation farming
The content of protein in mussel meal may be approximately 65%, which is a little lower than in
fish meal. However the contents of the essential S-containing amino acids methionine+Cystine, and
Lysine in mussel meal are similar to those in fishmeal.
Odd Lindah has been an international pioneer in Sweden, in launching the concept of
“environmental mussel production” where the mussel farmers would receive payment for removing
N and P from the aquatic environment in a system resembling the current system for CO2
emissions. The mussels, in particular those raised in the Baltic and do not reach the size for the
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