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Utilization of duckweed as fish meal replacement in common carp (Cyprinus carpio)

Stadtlander, T.; Surber, J.; Pietsch, C.; Tschudi, F.; Sigrist, M.; Seitz, A.; Kreuzer, M. and Leiber, Florian (2020) Utilization of duckweed as fish meal replacement in common carp (Cyprinus carpio). In: Proceedings of the Society of Nutrition Physiology = Berichte der Gesellschaft für Ernährungsphysiologie, DLG-Verlag GmbH, 29, p. 39.

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Document available online at: https://www.research-collection.ethz.ch/handle/20.500.11850/439700


Summary

Duckweed, the family Lemnaceae, comprises a group of around 40 different aquatic flowering plant species. They can grow very fast, producing higher biomasses compared to terrestrial plants (up to 79 t DM ha-1 a-1, Leng et al. 1995). Furthermore, they are very efficient in uptake of nitrogen and phosphorous and are producing protein of high quality (Stadtlander et al. 2019). Protein contents usually range between 25 to 35% of DM (dry matter) but have been reported to be as high as 45% of DM. Duckweed (Spirodela polyrhiza) has been successfully grown on diluted cow slurry and been fed to rainbow trout fry (Stadtlander et al. 2019). Common carp (Cyprinus carpio) is among the most important cultured fish species in the world, with a production of 4.13 mio t in 2017, and cyprinids (carp-like fish) in general contribute around 50% of global aquaculture fish production. In this study, we tested two different duckweed (S. polyrhiza) meals, one dried (DWD) and one fermented (DWF), in three different concentrations in the diet of carp fry and compared results to a duckweed free control (C).


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:aquaculture, duckweed, Wasserlinsen, BLW, Abacus, FiBL50094
Agrovoc keywords:
Language
Value
URI
English
Duckweed -> Lemna
http://aims.fao.org/aos/agrovoc/c_12131
English
aquaculture
http://aims.fao.org/aos/agrovoc/c_550
Subjects: Animal husbandry > Feeding and growth
Animal husbandry > Production systems > Aquaculture
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal > Animal nutrition
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal > Aquaculture
Deposited By: Forschungsinstitut für biologischen Landbau, FiBL
ID Code:39166
Deposited On:04 Feb 2021 12:56
Last Modified:04 Feb 2021 13:17
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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