Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 2 Growth performances of juvenile rainbow trout fed with five experimental diets for 7 weeks

From: Effects of enzymatically hydrolyzed fish by-products in diet of juvenile rainbow trout (Oncorhynchus mykiss)

  Diets
CON TBB12.5 TBB25 TBB37.5 TBB50
WG1 259 ± 14.9a 250 ± 17.4ab 243 ± 17.7ab 239 ± 29.0ab 225 ± 8.82b
SGR2 2.13 ± 0.07a 2.09 ± 0.08ab 2.05 ± 0.09ab 2.03 ± 0.14ab 1.96 ± 0.05b
FE3 133 ± 6.14a 131 ± 6.34ab 127 ± 1.30ab 125 ± 2.82ab 125 ± 1.88b
PER4 2.76 ± 0.12a 2.70 ± 0.12ab 2.63 ± 0.03ab 2.62 ± 0.05ab 2.59 ± 0.04b
HSI5 1.07 ± 0.50ns 0.91 ± 0.15 0.98 ± 0.12 1.03 ± 0.15 1.00 ± 0.13
VSI6 6.58 ± 0.67ab 7.01 ± 0.60ab 6.87 ± 1.13ab 7.26 ± 0.99a 6.35 ± 0.53b
CF7 1.07 ± 0.08a 0.98 ± 0.09bc 1.04 ± 0.08ab 0.98 ± 0.06ab 0.90 ± 0.06c
SR8 93.3 ± 7.64ns 91.7 ± 5.77 91.7 ± 7.64 93.3 ± 11.6 95.7 ± 2.89
  1. Values are means from triplicate groups of fish (n = 3) where values in each row with different superscripts are significantly different (P < 0.05)
  2. 1Weight gain (WG) = (final weight − initial weight) × 100/initial weight
  3. 2Specific growth rate (SGR; %/day) = (ln final weight − ln initial weight) × 100/d
  4. 3Feed efficiency (FE; %) = wet WG (g) × 100/dry feed intake (g)
  5. 4Protein efficiency ratio (PER) = wet weight gain/protein intake
  6. 5Hepatosomatic index (HSI; %) = (liver weight/body weight) × 100
  7. 6Viscerosomatic index (VSI; %) = (visceral weight/body weight) × 100
  8. 7Condition factor (CF) = {fish weight (g)/fish length (cm) 3} × 100
  9. 8Survival (SR; %) = (total fish-dead fish) × 100/total fish