Table 3. Feed consumption (g/fish), feed utilization, condition factor (CF) and hepatosomatic index (HSI) of rockfish fed the experimental diets containing various concentrations of jack mackerel meal (JMM) for 8 weeks

Experimental diets	Feed consumption (g/fish)	FER1)	PER2)	PR3)	CF4)	HSI5)
JMM0	17.2 ± 0.05e	1.04 ± 0.006	1.99 ± 0.011	35.4 ± 0.18	1.43 ± 0.005d	2.85 ± 0.005
JMM1	18.4 ± 0.05d	1.03 ± 0.001	1.98 ± 0.002	35.5 ± 0.18	1.43 ± 0.002d	2.85 ± 0.002
JMM3	18.8 ± 0.10c	1.04 ± 0.005	1.99 ± 0.009	35.1 ± 0.27	1.45 ± 0.003c	2.85 ± 0.002
JMM5	20.1 ± 0.05b	1.03 ± 0.003	1.99 ± 0.006	35.2 ± 0.36	1.50 ± 0.002b	2.84 ± 0.003
JMM10	22.0 ± 0.05a	1.04 ± 0.002	2.00 ± 0.004	35.0 ± 0.23	1.52 ± 0.006a	2.85 ± 0.002

Values (means of triplicate ± SE) in the same column with same superscript letter are not significantly different (p > 0.05).
Feed efficiency ratio (FER) = Weight gain of fish / feed consumption.
Protein efficiency ratio (PER) = Weight gain of fish / protein consumption.
Protein retention (PR) = Protein gain × 100 / protein consumption.
Condition factor (CF, g/cm³) = Total body weight × 100 / total length³
Hepatosomatic index (HSI) = Liver weight × 100/total body weight.