Effect of black soldier fly larvae-based diet on bone mineralization, fatty acids and amino acids composition of common carp (Cyprinus carpio) fingerling

Black soldier fly larvae meal-based diet is an innovative method for sustainable aquaculture. Black soldier fly larvae meal has shown a promising alternative as a fish meal replacement in diets for common carp fingerlings. This study was aimed to assess the effect of dietary black soldier fly larvae on bone mineralization, fatty acids and amino acids composition of fingerlings. About three feeds were formulated where fish meal replaced by BSFL for nursing of fingerlings. Feeds were prepared for fish. After 60 days of trial, samples of muscles and bones were collected for fatty acid composition, amino acid composition and bone mineralization. The results showed that fatty acid composition in muscles was closely related with diets. Fatty acids such as cis-11, 14 Eicosadienoic (0.86±0.14) and Docosahexaenoic (1.48±0.25) showed higher significant difference. While, Docosapentanoic acid (0.82±0.12) and, Nervonic (0.305±0.07) showed lower significant difference in fish muscles. Amino acids such as serine (4.33±0.55) and aspartic acid (6.375±0.33) were more abundant and showed higher statistical difference. While, lysine (8.02±0.16) and cysteine (4.33±0.55) showed lower statistical difference. Three amino acids such as tryptophan, asparagine and glutamine were absent in common carp muscles. Mineral such as phosphorous (50.5±3.535) were more abundant and showed higher statistical difference in bones of fingerlings while the value of calcium (164±1.412) showed lower significant difference. To conclude the insect-based meal made from BSFL is a nutritionally appropriate source of protein, fat and minerals for common carp fingerlings without having negative impact on growth and feed utilization.