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- W1490658188 abstract "Performance of Arctic charr fed a feed containing Baltic Sea-sourced ingredients has been evaluated. The feed ingredients blue mussels, detoxified Baltic Sea fish, microbes and by-products from regional crops initiate regional nutrient movements from the eutrophicated Baltic Sea. Arctic charr farming is conducted in nutrient depleted utraoligotrophic water bodies affected by hydropower regulations in northern Sweden. These systems can receive Baltic Sea nutrients through farming and close the loop of nutrients that will improve the farming industry’s sustainability. The novel Baltic Sea-sourced feed, Baltic Blend, was tested in triplicate groups and compared to groups fed a fishmeal based control feed mirroring a commercial feed. The trial lasted a full production cycle and fish grew from a mean weight of 50 to 670 g. The groups fed the Baltic Blend had a 12 % lower final weight than fish fed the control diet. Fat and astaxanthin content in the flesh did not differ between treatments. In order to evaluate if the Baltic Blend had a genetic effect on growth in Arctic charr, the test groups consisted of identifiable individuals from 15 sibling groups. All sibling groups showed similar differences in final weight with respect to diet, thus demonstrating no genetic effect on how the new diet affects growth. A sensory evaluation on the final product was made and the panel found fish fed Baltic Blend and the control feed similarly tasty. A feed preference experiment with individual Arctic charr in aquarium was conducted and shows a preference by the fish for the new Baltic Blend feed. A pilot study to evaluate the decontaminated Baltic Sea fishmeal and fish oil and to learn more about its suitability for inclusion in fish feed was also conducted. The results are promising. The Baltic Sea sourced ingredients that are of little or no value for direct human consumption can be harvested to produce Arctic charr, a high quality exclusive product on the table market. In addition, the loop of nutrients potentially improves the ecological status of both the receiving and the donating ecosystem, resulting in for example increased production of wild fish. This nutrient loop could support and increase sustainability in the limited farming industry for Arctic charr in Sweden and thereby the industry can gain better acceptance by the general public and other stakeholders." @default.
- W1490658188 created "2016-06-24" @default.
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- W1490658188 date "2014-01-01" @default.
- W1490658188 modified "2023-09-27" @default.
- W1490658188 title "Performance of Arctic charr fed with Baltic Sea-sourced ingredients" @default.
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