Nutritional value of Daphnia magna (straus, 1820) under conditions of co-cultivation with fodder microalgae
Journal Title: Naukovyi visnyk Chernivetskoho universytetu. Biolohiia (Biolohichni systemy) - Year 2017, Vol 9, Issue 2
Abstract
The possibility of using Desmodesmusarmatus (Chod.) Hegew and Acutodesmusdimorphus (Turpin) Tsarenko algae as fodder substrates for growing Daphnia magna (Straus, 1820) has been investigated. The biochemical composition of algae cultivated in wastewater from a recirculating aquaculture system (RAS) fish-farm has been analyzed. It is shown that both algae cultures are characterized by a similar amount of protein - at a level of 50%. The amount of lipids predominates in A. dimorphus biomass and is 21%. In the biomass of both algae, a high carotenodine content of 12 mg/g of dry weight was noted.Also, the nutrient value of Daphnia magna was analyzed in the conditions of co-cultivation with these fodder algae. It is shown that co-cultivation of Daphnia magna with D. armatus allows to obtain daphnia biomass with an increased content of total protein (82.6%) and carotenoids (15,24 mg/g of dry weight). Use of A. dimorphus as a feed substrate leads to an increased accumulation in the biomass of daphnia lipids - 10.3%.The biomass of D. armatus algae is assumed to be used as an optimal fodder substrate for co-cultivation with Daphnia magna.
Authors and Affiliations
Larysa CHEBAN, Olga Grynko, Mychaylo MARCHENKO
Keywords
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- EP ID EP262235
- DOI 10.31861/biosystems2017.02.166
- Views 112
- Downloads 0
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