Authors' Contribution NA conducted the trial and collected data. SMH planned and supervised the research and provided all materials for the research. NA prepared manuscript while AR and MMS helped him. AJ helped in statistical analysis. HA proffread the manuscript. MZH and ST helped in feed analysis and compiling the results. BA helped in chemical analysis of fish. The research was conducted to estimate the efficacy of Se nanoparticles on mineral absorption and carcass composition of C. mrigala

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... fingerlings fed nano-Se particles supplemented sunflower meal based diets. The experiment was consisted on seven test diets on the basis of supplementation of nano Se graded levels (0, 0.5, 1, 1.5, 2, 2.5 and 3 mg/kg). Chromic oxide was added as an inert marker. Fingerlings were fed at the rate of 5% of their live wet weight. Maximum improvement in mineral absorption (Ca, Na, K, Cu, P and Al) was observed at test diet with 1.5 mg/kg supplementation of Se nanoparticles. Maximum Fe, Mn and Cr absorption was noted at 2 mg/kg supplementation of nano Se. The highest absorption of Mg and Zn was found in the fingerlings fed at test diet with 1 mg/kg supplementation of nano Se particles. The best results in regard of body composition (CP; 61% and EE; 14%) were noted in fingerlings when fed 1.5 mg/kg levels of Se-nano particles based diets. It was concluded from the results of current study that supplementation of Se NPs (1.5 mg/kg) in sunflower meal based diet improves the mineral absorption and body composition of C. mrigala fingerlings.