Immune Parameters, Survival, and Growth of Giant Freshwater Prawn Macrobrachium rosenbergii Fed with Different Levels of β-glucan (0%, 0,075%, 0,15%, and 0,225%) Suplemented Diets.

Abstract

Giant freshwater prawn Macrobrachium rosenbergii is one of the prioritized freshwater commodities with high economical value in Indonesia. This study evaluated the effect of β-glucan supplementation (0%, 0,075%, 0,15%, and 0,225%) on the immune parameters, survival, and growth of giant freshwater prawn. Giant prawn juvenile with an initial body weight of 1.25 ± 0.041 g was stocked in a 150 Litre aquarium with a density of 16 animals/aquarium. Phenoloxydase activity, total and differential haemocyte counts, survival, and specific growth rate were measured and calculated on the final day of experiment (day 42). Phenoloxydase activity, total and differential haemocyte counts of glucan treatments were higher than control (0%), whereas no significant difference was observed in survival. Administration of β-glucan for 42 days resulted in a higher prawn growth rate (p<0.05) with the highest yield observed was on β-glucan 0,015% treatment.