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)

查看全文 作　　者：Femi [1,2,3]J.Fawole;Shyam [1,2]N.Labh;Md Sakhawat [2,4]Hossain;Ken [5]Overturf;Brian [2]C.Small;Thomas [5]L.Welker;Ronald [1]W.Hardy;Vikas [1,2]Kumar

机构地区：[1]Aquaculture Research Institute,Department of Animal,Veterinary and Food Sciences,University of Idaho,Moscow,ID,83844,USA;[2]Hagerman Fish Culture Experiment Station,Aquaculture Research Institute,University of Idaho,Hagerman,ID,USA;[3]Department of Aquaculture and Fisheries,University of Ilorin,Ilorin,Nigeria;[4]Department of Aquaculture,Faculty of Fisheries,Sylhet Agricultural University,Sylhet,3100,Bangladesh;[5]United States Department of Agriculture,Agricultural Research Service,Hagerman Fish Culture Experiment Station,Hagerman,ID,USA

出　　处：《Animal Nutrition》索引2021年第4期,共11页

基　　金：the J.William Fulbright Scholarship Program for financial support as a Visiting Scholar at Aquaculture Research Institute,University of Idaho,USA;the United States Department of Agriculture Agricultural Research Service for partially funding the research(Accession numbers:437676&436723)。 摘　　要：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)feed.Four 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 weeks.Growth 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(P<0.05).Oil sources did not(P>0.05)affect the major nutrient content of whole-body,however,the fatty acid composition of the muscle and liver was influenced(P<0.05),with the highest 14:0,16:0,and total saturated fatty acid detected in BSLO or BSLO+BA fed trout compared to the others(P<0.001).No 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 group.Gene expression for fatty acid binding protein(fabp),fatty acid synthase(fas),and△5 desaturase in the liver was lower in FO(P<0.05),while BSLO+BA registered the highest△6 expression(P=0.006).Supplementation of BA in the BSLO diet increased superoxide dismutase(SOD)and catalase(CAT)activities compared to the other groups(P<0.05).In 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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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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