Tambaqui Production at Different Stocking Densities in RAS: Growth and Physiology

Abstract

Stocking densities were evaluated for the rearing tambaqui in an RAS system. Experiment 1 used juveniles weighing 0.54 g at the following densities for 15 days: D0.3—0.3; D0.6—0.6; and D0.9—0.9 kg m−3. Experiment 2 used juveniles weighing 8.22 g at the following densities for 75 days: D0.8—0.8; D1.2—1.2; and D1.6—1.6 kg m−3. Experiment 3 used juveniles weighing 142.18 g at the following densities for 75 days: D2—2; D4—4 and D6—6 kg m−3. In Experiment 1, density did not influence performance (p > 0.05), with the exception of biomass, which was greatest in D0.9 (p 0.8 (p p p 2 and D4 (p 2 (p 4 and D6 (p 2 and D6 (p Colossoma macropomum demonstrated adaptive capacity for reared in RAS at high stocking densities.

Keywords

• biomass
• stress
• hematology
• somatic indices