No abstract

Searching for potential increases in shrimp yields, this study evaluated the effects of different stocking densities on water quality and production performance of juvenile shrimp, Litopenaeus vannamei, reared on a biofloc-dominated system throughout 77 days. The organisms (1.27 ± 0.54 g) were stocked at three densities, 400 (T400), 500 (T500), and 600 (T600) shrimp/m 2 corresponding to 500, 625, and 750 shrimp/m 3 , with three replicates each, in nine 35 m 2 tanks with 28 m 3 of workable volume inside a greenhouse. Shrimp were maintained at optimal conditions for the species with an average temperature of 28.9 ± 0.1 C, dissolved oxygen average above 6.0 mg/L, and pH above 7.3. Significant differences in yields (3.52 ± 0.05, 4.02 ± 0.06 and 4.22 ± 0.40 kg/m 2 or 4.39 ± 0.07, 4.48 ± 0.08, and 5.27 ± 0.49 kg/m 3) were observed between treatments (T400, T500, and T600, respectively), and for final mean weights (12.3 ± 5.53, 12.2 ± 3.89, and 10.2 ± 3.49 g, respectively). These results suggest that 500 shrimp/m 2 or 625 shrimp/m 3 is the optimum stocking density for Biofloc Technology culture under the defined study conditions.

No abstract

No abstract

No abstract