common fish feed and then fed to turbot, which was cultivated within a
Recirculating Aquaculture System (RAS). These mixes of feed all containing different concentrations of mussel meal were tested and the resulting growth, acceptance, welfare and digestibility observed. The experiments revealed that a
replacement of fish meal with mussel meal of 100% and 50% resulted in depressed
growth; while a fish meal replacement with 10% and 25% of mussel meal did not
reduce growth or negatively affect the health of the tested turbot. The outcome of
this project was that mussel meal has a high potential to serve as supplement or fish
meal replacement in feed for turbot raised in aquaculture systems and therefore
reduces the impact of fisheries for fish meal production (Weiss and Buck 2017).
Fig. 11.12 a–e Mussels (Mytilus edulis) from offshore foundations to be used as fish feed.
a Harvested mussels scrapped from the foundation; b grinder to chop the mussel meat; c Blue mussels
attached to a foundation surface underwater; d mussel meat after grinding; e mussels to be tested for
parasite infestation. Photos a–b and d–e AWI/Dr. Monika Weiß; c AWI/Prof. Dr. Bela H. Buck.
Modified after Weiss et al. 2012
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