Table 3.

Initial and final size indices of common barbel (Barbus barbus L.) yearlings fed on control diet containing Se-free microalgae biomass and diets supplemented by either sodium selenite or Se-enriched microalgae (replacing Se-free microalgae) to obtain Se concentrations of 0.3 mg kg⁻¹ from sodium selenite (Se 0.3) or 0.3 and 1.0 mg kg⁻¹ from Se-enriched microalgae biomass, Algadiet 0.3 and Algadiet 1.0, respectively.

Growth indices/treatment	Control	Se 0.3	Algadiet 0.3	Algadiet 1.0
Initial standard body length (mm)	14.2 ± 0.7	14.3 ± 0.8	14.4 ± 0.6	14.4 ± 0.6
Initial weight (g)	47.8 ± 6.3	48.5 ± 6.9	48.9 ± 5.9	48.3 ± 5.5
Final standard body length (mm)	16.1 ± 0.9	16.3 ± 0.7	16.3 ± 0.8	16.5 ± 0.7
Final weight (g)	54.2 ± 6.9	52.1 ± 6.6	52.4 ± 5.5	54.6 ± 7.5