Effects of green Macroalgae Ulvafasciata supplemented diet on biochemical composition in fresh water fish Labeorohita (Hamilton)

The present study was carried out to investigate the potential of the supplementation of the green seaweed Ulvafasciata, as a dietary additive ingredient along with the basic feed ingredient in fish feed, to improve the fresh water fish Rohu so called Labeorohita (Hamilton) biochemical composition. The experiment was carried out in the PG and Research laboratory, Nirmala College for women, on Labeorohita of a mean length (10cm) and weight of (45±1g). Five experimental diets composed of dietary protein were prepared using dried algae meal ingredient incorporated at levels of 0% (control), (TF1) 5%, (TF2)10%, (TF3)15%, (TF4)20% and (TF5)25% of fish feed. By the end of the experiment, fish biochemical composition like protein, lipid and carbohydrate were evaluated. With increasing Ulvafasciata level in the fish diet protein, carbohydrate and lipid concentration increased significantly (P < 0.05) till (TF3)15%.The highest value was maintained at fish fed the diet containing 15% Ulvafasciata while the lowest was maintained at control treatment. From the present result highest significant values of protein, carbohydrate and lipid values were obtained from fish maintained at (TF1) 5%, (TF2)10%, (TF3)15% Ulvafasciata incorporated dietary treated fishes till 45 days which states that Ulvafasciata can be supplemented to Labeorohita diet till an optimum level of 15% which will not show any adverse effect on their survival rate.