Table 9. Growth performance of Japanese eel in HBFT-AP for 12 weeks¹⁾

Growth performance	Diet
	Mash (1–6 wk)	EP (7–12 wk)
Initial fish No.	367	361
Final fish No.	361	357
Initial weight of total fish (g)	82,130	91,320
Final weight of total fish (g)	91,320	106,780
Initial average (n = 50) weight of total fish (g)	225.5 ± 20.7	249.7 ± 21.6
Final average (n = 50) weight of total fish (g)	249.7 ± 21.6	296.9 ± 24.3
Feed intake(g, DM)	30,199	36,026
WG (%)2)	11.20	16.93
FE (%)3)	30.45	42.91
SGR (%)4)	0.25	0.37
PER5)	0.55	0.86
DFI6)	0.57	0.58
Survival rate (%)7)	98.2	98.9

HBFT-AP, hybrid biofloc technology-aquaponics; Mash, commercial powdered feed; EP, extruded pellet.
Weight gain (%) = [final weight (g) – initial weight (g)] × 100/initial weight (g).
Feed efficiency (%) = [wet weight gain (g)/dry feed intake] × 100.
Specific growth rate (%) = [Ln final weight (g) – Ln initial weight (g)] / experimental days × 100.
Protein efficiency ratio = wet weight gain (g) / protein intake.
Daily feed intake (%/av. wt/d) = dry feed intake (g/fish) / [(initial wt + final wt + dead fish wt) / 2] / experimental days × 100.
Survival rate (%) = final fish number / initial fish number × 100.
WG, weight gain; FE, feed efficiency; SGR, specific growth rate.