Evaluation of Vitamin-C and Spirulina (Arthrospira Platensis) Suppelentation Diet on Growth Performance, Anti-Oxidants and Carcass Composition of Rohu, Labeo Rohita (Hamilton, 1822)

An experiment was conducted for 60 days to evaluate the growth performance, anti-oxidants and carcass composition of rohu, Labeo rohita, under different dietary treatments. The study comprised fourtreatments with three replicates each, along with a control group. This study prepared 4 experimental feeds, which included Control (0), T1 (10 g), T2 (15 g) and T3 (20 g) of spirulina powder-containing diet. The proximate composition of vitamin-C enriched spirulina included crude protein (57.63 ± 0.66%), lipid (8.24 ± 0.35%), moisture (7.27 ± 0.30%), ash (10.20 ± 0.15%), and Nitrogen-Free Extract (NFE) (16.65 ± 0.57%) was observed. The nutritional profile of experimental diets was observed, such as crude protein (30.36-30.73%), lipids (5.17-5.57%), moisture (8.26-8.64%), ash (15.17-15.87%), crude fibre (9.92-11.27%), and nitrogen-free extract (27.92-30.73%). The highest growth performance such as length gain (9.26±0.057), weight gain (12.80±0.10), percentage weight gain (304.76±2.38), specific growth rate (0.67±0.002), protein efficiency ratio (2.43±0.014), hepatosomatic index (0.039±0.001), and intestinal somatic index (0.48±0.005) were observed in T3, whereas the highest feed conversion ratio (1.67±0.028) was in the control group compared to the other treatment groups. The highest anti-oxidant activities including catalase(256.34±1.98), glutathione s-transferases (176.64±0.31)and superoxide dismutase (45.37±0.80)was observed in T3 compared to the other treatment groups. The highest carcass composition was observed such as crude protein (16.64±0.049), crude lipid (6.35±0.036), moisture (70.46±0.088), ash (2.64±0.041), and NFE (6.50±0.14) compared to the other treatment groups. The acceptable range of water quality parameterswas observed during the experiment.The results suggest that the specific dietary T3 group enhanced the overall growth, anti-oxidantsand carcass composition of L. rohita.