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.