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Insect(black soldier fly larvae) oil as a potential substitute for fish or soy oil in the fish meal-based diet of juvenile rainbow trout(Oncorhynchus mykiss)

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Animal nutrition 2021年第4期7卷 1360-1370页

作者： Femi J.Fawole shyam n.labh Md Sakhawat Hossain Ken Overturf Brian C.Small Thomas L.Welker Ronald W.Hardy Vikas Kumar Aquaculture Research Institute Department of AnimalVeterinary and Food SciencesUniversity of IdahoMoscowID83844USA Hagerman Fish Culture Experiment Station Aquaculture Research InstituteUniversity of IdahoHagermanIDUSA Department of Aquaculture and Fisheries University of IlorinIlorinNigeria Department of Aquaculture Faculty of FisheriesSylhet Agricultural UniversitySylhet3100Bangladesh United States Department of Agriculture Agricultural Research ServiceHagerman Fish Culture Experiment StationHagermanIDUSA

Alternative sources of fish oil(FO)are one of the major problems in aquaculture;therefore,the goal of the present study was to examine insect(black soldier fly larvae)oil(BSLO)as a potential replacer of fish/s oy oil in juvenile rainbow trout(initial average weight of 32±0.15 g)*** diets were formulated wherein FO(control diet)was completely replaced with either soybean oil(SO)or BSLO,and an additional BSLO-based diet supplemented with 1.5%bile acid(BSLO+BA)were fed to the fish for 10 *** performance of the BSLO fed group was similar(P>0.05)to that of the FO and SO fed groups,howeve r,the fish fed BSLO+BA diet registered the lowest growth(Pnot(P>0.05)affect the major nutrient content of whole-body,however,the fatty acid composition of the muscle and liver was influenced(Pnd total saturated fatty acid detected in BSLO or BSLO+BA fed trout compared to the others(Pno significant diffe rences were observed in eicosapentaenoic acid+docosahexaenoic acid(EPA+DHA)or total n-3 polyunsaturated fatty acid(PUFA)content in muscle among the groups,whereas,the highest EPA:DHA and n-3:n-6 ratios were detected in the FO *** expression for fatty acid binding protein(fabp),fatty acid synthase(fas),and△5 desaturase in the liver was lower in FO(Pn(P=0.006).Supplementation of BA in the BSLO diet increased superoxide dismutase(SOD)and catalase(CAT)activities compared to the other groups(Pn conclusion,BSLO could serve as a substitute for FO and SO in rainbow trout diet without negatively impacting growth performance,whole-body composition and nutrient retention,and modulate the expression of fatty acid metabolism-related genes in rainbow trout.

关键词： Insect oil Rainbow trout Growth performance Fatty acid metabolism Antioxidant enzyme

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