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Utilization of potato protein in organic rainbow trout nutrition
Project
Project code: 2808OE058
Contract period: 01.12.2008
- 31.10.2011
Budget: 124,106 Euro
Purpose of research: Applied research
The organic production of fish feed production is highly regulated. For the feeding of carnivorous fish species like the rainbow trout (Oncorhynchus mykiss), high-quality fish meals listed in its production criteria NATURLAND only from certified sustainable fisheries (eg MSC standard), of by-catch of fisheries or food remnants from the processing of organically produced fish of the same geographical region be obtained. Due to the limited availability of fishmeal will be reduced by using alternative protein sources to a minimum. The use of native herbal powders is limited because of the low protein levels, possibly limiting amino acids and antinutritive ingredients. Vegetable protein concentrates with high protein content of 70-90% may be used only for treatment in organic solvent-fish production, which excludes the use of protein isolates from soy, canola and lupins. Moreover, the prohibited to enhance the biological value of vegetable proteins necessary use of synthetic amino acids, so that alternative sources of protein are used in organic fish production of limited use. Potato protein has in comparison to proteins from other plants such as soybeans and rapeseed protein composition of a higher level without limiting amino acids and is recognized as a result of solvent production and regional crop as a protein carrier in animal feed according to ecological criteria. Substitution of fish meal fish feed in order to share in the eco-should therefore be investigated, the use of potato protein in the diet of rainbow trout (RF). This is taking into account possible antinutriver ingredients, such as Solanine or chaconine, the maximum use of potato protein are determined, which has no negative effects on growth performance and health status of the RF. It is building through the deliberate combination of potato protein with the also registered in the organic livestock production, but nutritionally inferior wheat gluten protein composition make it cheaper to feed fish meal to the maximum possible substitution will be made in eco-fish feed, and be taken into account the impact on sensory quality of products.
Section overview
Subjects
- Freshwater fisheries
Framework programme
Federal Organic Farming Scheme and other forms of sustainable agriculture (BÖLN)
