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Appropriate Trout Feed Protects Environment and Results in Valuable Human Foodstuffs

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Abstract (2. Language): 
Development in research and production of trout feed during the last years led to a remarkable reduction of the environmental impact by improving the diet composition. Important steps were the minimizing of the phosphorus content, the use of extruded feed instead of pelleted feed and the increase of the energy (lipid) level. Lipid-enriched high-digestible diets with low phosphorus level are well utilized, enable rapid growth of trout and contribute to decrease of aquaculture waste by diminishing the excretion of phosphorus, nitrogen and organic matter. New considerations are related to stabilizing the trout faeces by adding guar gum to the feed. In future substitution of fish meal with vegetable meals will support the conservation of marine fish populations. Enrichment of trout feeds with fish oil results in marketable fish with substantial concentrations of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). These n-3 polyunsaturated fatty acids are favourable for human health and have a beneficial effect especially in preventing cardiovascular diseases.
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REFERENCES

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Appropriate Trout Feed Protects Environment and Results in Valuable Human Foodstuffs
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