Table 3. Feed consumption, feed efficiency, protein efficiency ratio (PER), and protein retention (PR) of juvenile mandarin fish fed experimental diets with various feeding ratios for 10 weeks

Feeding ratio (%) Feed consumption (g/fish) Feed intake (%/day)1) Feed efficiency (%)2) PER PR
100 39.9 ± 0.85b 3.6 ± 0.04b 66.5 ± 0.79a 1.2 ± 0.01a 24.7 ± 0.68a
95 37.5 ± 1.31b 3.5 ± 0.05b 70.1 ± 0.77a 1.3 ± 0.01a 24.0 ± 0.88a
90 35.0 ± 0.36b 3.3 ± 0.07b 73.4 ± 2.96a 1.3 ± 0.05a 26.2 ± 0.75ab
85 28.7 ± 0.73a 2.7 ± 0.06a 86.8 ± 1.57b 1.6 ± 0.03b 31.0 ± 1.77bc
80 26.7 ± 1.59a 2.7 ± 0.08a 84.9 ± 0.46b 1.6 ± 0.01b 30.9 ± 0.93bc
75 24.5 ± 1.30a 2.5 ± 0.07a 85.4 ± 1.06b 1.6 ± 0.02b 32.2 ± 1.25c
70 22.6 ± 1.98a 2.4 ± 0.13a 85.3 ± 3.40b 1.6 ± 0.06b 31.5 ± 1.31bc
Values (mean of triplicates ± SE) in the same column not sharing a common superscript are significantly different (p < 0.05).
Feed intake (% body weight/day) = 100 × total consumed feed / [(final weight + initial weight) / 2] / feeding duration
Feed efficiency (%) = fish wet weight gain × 100 / feed intake (dry matter).
PER, weight gain of fish/protein consumed; PR, protein gain of fish/protein consumed.