Nachhaltig produzierte Wasserlinsen als mögliche neue Proteinquelle für die Schweizer Tierernährung am Beispiel der Aquakultur

Switzerland has a low self-coverage ratio of protein-rich feed and most of it is imported from abroad. In a master thesis, it was shown that duckweed from the family of Lemnaceae could have a high protein content, when grown on diluted cow slurry, with high growth and area production rates that are many times higher than those of all known terrestrial production systems. Furthermore, the harvested duckweed has been successfully used as a feed ingredient for rainbow trout larvae. Harvesting duckweed, however, is very time-consuming and has to be done on a frequent basis, which leads to the need of an automated harvesting method for Switzerland.

The aim of the project is to evaluate whether technologically low-cost and inexpensive facilities can be used to produce duckweed of sufficient quality as a protein source for fish nutrition in Switzerland.

Das Projekt wird in einem umfangreichen Ansatz klären, welche Produktionseffizienz (Flächenproduktivität und Nährstoffgehalte der Wasserlinsen sowie der dafür benötigte Energieverbrauch) in einfachen Kreislaufanlagen erreicht werden kann, sowie die Biosicherheit des Produktes untersuchen. Die produzierten Wasserlinsen werden in Futtermittel eingemischt, extrudiert und an Brut und Mastfische kommerziell wichtiger Vertreter der Salmoniden, Perciden und Cypriniden verfüttert und deren Produktionsperformance untersucht. Abschliessend wird die Betriebswirtschaftlichkeit einer möglichen Wasserlinsenproduktion unter den getesteten Bedingungen berechnet.

• Federal Office for Agriculture (FOAG)

• Dreiklang Foundation for Ecological Research and Education
• Federal Office for Agriculture (FOAG) – Support for Competence and Innovation Networks
• Other EU-Institutions
• Other EU-Institutions
• Cantons and municipalities
• Cantons and municipalities
• Swissaid
• Swissaid
• Other public institutions, Switzerland
• Other public institutions, Switzerland
• Federal Office for Agriculture (FOAG) – Support for Competence and Innovation Networks
• Dreiklang Foundation for Ecological Research and Education
• Foundation Edith Maryon
• Foundation Edith Maryon
• Other foundations
• Other foundations
• Other economic actors
• Other economic actors
• Non-profit associations / organisations
• Non-profit associations / organisations
• Federal Office for Agriculture (FOAG) – Plant Breeding
• Federal Office for Agriculture (FOAG) – Support for agricultural research
• Federal Office for Agriculture (FOAG) – Support for agricultural research
• Federal Office for Agriculture (FOAG) – Support for agricultural advice
• Federal Office for Agriculture (FOAG) – Support for agricultural advice
• Federal Office for Agriculture (FOAG) – Agricultural Resources Program
• Federal Office for Agriculture (FOAG) – Agricultural Resources Program
• Federal Office for Agriculture (FOAG) – Water Protection Program
• Federal Office for Agriculture (FOAG) – Water Protection Program
• Federal Office for Agriculture (FOAG) – Plant Breeding
• Federal Office for Agriculture (FOAG) – Agricultural Marketing
• Federal Office for Agriculture (FOAG) – Agricultural Marketing
• Federal Office for Agriculture (FOAG) – Preliminary Assessment of Innovative Projects
• Federal Office for Agriculture (FOAG) – Preliminary Assessment of Innovative Projects
• Federal Office for Agriculture (FOAG) – Research and Conservation Projects in Animal Breeding
• Federal Office for Agriculture (FOAG) – Research and Conservation Projects in Animal Breeding
• Federal Office for Agriculture (FOAG) – Innovative Projects in Sheep's Wool
• Federal Office for Agriculture (FOAG) – Innovative Projects in Sheep's Wool

• ZHAW Zurich University of Applied Sciences in Wädenswil, Institute of Natural Resource Sciences
• Dr Constanze Pietsch-Schmied, leader of the Fish Welfare Group
• Fridolin Tschudi, leader of the Recirculating Aquaculture Group

• Stadtlander Timo (Department of Livestock Sciences)

• Stolze Mathias (Support unit of the Executive Committee)
• Weiner Mareike (Department of Food System Sciences)

Project coordination

Leading work package 1, 5 and 7

Cooperation with ZHAW in work package 3 and 8

• Animal Nutrition (Department of Livestock Sciences, FiBL Switzerland)
• Sustainability (Department of Food System Sciences, FiBL Switzerland)