In the present investigation, H. pluvialis and Nostochopsis were grown in the bold basal medium in controlled air-conditioned culture room. Catla catla fish weighing 40 g were randomly distributed in 2 rectangular of 20 L capacity at a density of 6 fish per tank. Tank 1 fish were given normal feed, tank 2 fish were given H. pluvialis and Nostochopsis biomass (100 mg/kg b.w.). After 24 h gut evacuation period, all fish were anaesthetized and weighed. Out of six, three samples were randomly collected and stored at -20°C, until proximate analysis and lipid extraction. In normal feed treated Catla catla group, lipid content was found as 82.2±1.3, in H. pluvialis and Nostochopsis biomass-based feed group, lipid content was observed as 177.6±2.1 However, protein and ash content were reported as 133.6±1.2 and 14.4±2.1 in H. pluvialis and Nostochopsis biomass-based feed group. The present study reveals that H. pluvialis and Nostochopsis biomass can be used for the different aquatic feed formulations.
Research Article | Published online : 08-Jun-2021