Krill meal enhances health and fillet quality of Atlantic salmon, according to new study

by Aker BioMarine, Norway

The wild fish harvested from the ocean and processed to become fish meal (FM) and fish oil (FO) are finite resources that are shared across a range of users with increasing demands, for direct human consumption, pig and poultry production, to aquaculture feeds (1; 2) (1, 2).

Because of the high cost of fish meal and fish oil, due to increased demand and as mentioned limited resources, traditional small pelagic fish have also been increasingly replaced by vegetable feed ingredients in salmon feeds.
 

For example, during the past two decades, the amount of fish included in feed ingredients has dropped dramatically from 65 percent to 18 percent for fish meal and from 24 percent to 11 percent for fish oil (3). However, farmed salmon remains a main user of both fish meal and fish oil (2) so further complementary feed ingredients are required to support the salmon aquaculture market’s continue growth. There is an urgent need to find alternative feed resources that can further replace fish meal in Atlantic salmon diets, without compromising welfare and feed quality, in particular during the finishing feeding period when the feed demand is highest and flesh quality effects are most significant.

Antarctic krill meal is considered a unique and genuinely sustainable raw ingredient, high in protein content, favourable amino acids and fatty acid profiles, and with enhanced palatability properties. It has also been suggested that the low molecular weight soluble compounds of krill meal, such as nucleotides, amino acids and high levels of trimethylamine N‐oxide, all act together to make krill meal an effective attractant and flavoring agent. This has been confirmed in various species, such as salmon (3) resulting in a healthier and more robust farmed fish.

Read more, HERE.

The Aquaculturists

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