Assessment of efficacy of biofloc application in green tiger shrimp (Penaeus semisulcatus) postlarvae culture

In this study, green tiger shrimp, Penaeus semisulcatus postlarvae (average initial body weight of 0,14±0,44 g), were grown in a recirculating aquaculture system in biofloc technology (BY) and clear water (BS, control group) medium for 54 days comparatively. The experiment, planned in two groups with three replications, was carried out in ‰35±0.5 salinity, 45 L volume tanks. Water temperature, pH, and dissolved oxygen values were measured as 27.02±0.33°C, 7.65±0.08, 6.23±0.41 mg/L for the BY group and 27.05±0.24°C, 7.57±0.11, 6.44±0.22 mg/L for the BS group respectively. As a result, body weight gain (BY: 2,423±0.327 g, BS: 1.814±0.103 g), specific growth rate (BY: 5.329±0.159 g/day, BS: 4.845±0.085 g/day), survival rate (BY: Significant difference between the groups in terms of 62.50±2.50% BS: 51.67±5.20%) and feed conversion rate (BY: 2.12±0.23, BS: 2.71±0.15) found. In conclusion, for the first time, BY application was compared with the BS; it was determined that positively affected the aquaculture parameters of green tiger shrimp postlarvae were obtained from BS (p<0.05), while there was no difference between the groups in terms of nutrient components and hepatopancreas histomorphology (p>0,05).