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Turkish Journal of Fisheries and Aquatic Sciences 2020, Vol 20, Num, 12     (Pages: 867-878)

Insect Meal as a Partial Replacement for Fish Meal in a Formulated Diet for Perch Perca fluviatilis

Sarvenaz Khalili Tilami 1 ,Jan Turek 2 ,Daniel Červený 2 ,Pavel Lepič 2 ,Pavel Kozák 2 ,Viktoriia Burkina 2 ,Sidika Sakalli 2 ,Aleš Tomčala 1 ,Sabine Sampels 1-3 ,Jan Mráz 1

1 University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, Institute of Aquaculture and Protection of Waters, Husova tř. 458/102, 370 05 České Budějovice, Czech Republic
2 University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II 389 25 Vodňany, Czech Republic
3 Swedish University of Agricultural Sciences, Department of Molecular Sciences, Uppsala BioCenter, Box 7015, Uppsala, Sweden
DOI : 10.4194/1303-2712-v20_12_03 Viewed : 2499 - Downloaded : 1560 The growing importance of aquaculture products for human health also raises the question of product sustainability and decreasing its costs. Insects are considered as novel feed ingredients and source of proteins. In this study, a twelve-week feeding trial with replacement of 25% fishmeal by a mixture of house cricket (Acheta domesticus) and superworm (Zophobas morio) in the fish feed was conducted with perch (Perca fluviatilis). There were no significant differences in this feeding trial, regarding survival, but decreased fish growth and increased feed conversion between the control and the experimental fed groups. Hepatic cytochrome P450 (CYP1A and CYP3A-like) activity and fatty acid (FA) composition were assessed in perch also. No significant effects were observed on cytochrome P450 activity associated with presence of toxic compounds in fish. Feeding with insect pellets resulted in significant increasing of linoleic FA and an increase of the total content of n-6 FA in fish fillets, compared to the fish fillets from control group. However, changes in FA composition were only minor and did not affect the nutritional value of the fish with insect-based diet for human consumption. Further evaluation should be conducted with different ratios or different insect species. Keywords : fishmeal alternatives, Perca fluviatilis, fatty acids analysis, Zophobas morio, Acheta domesticus