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Table 1 Effects of dietary supplementation with 1% Arg, or 2% Arg for 56 days on growth performance and organ index of tilapia1

From: Dietary L-arginine supplementation reduces lipid accretion by regulating fatty acid metabolism in Nile tilapia (Oreochromis niloticus)

Items  Control 1%Arg 2%Arg P-value
Initial body weight, g 2.33 ± 0.02 2.35 ± 0.04 2.36 ± 0.03 0.691
Final body weight, g 67.47 ± 4.53 68.64 ± 3.56 68.27 ± 4.19 0.979
Weight gain, g 65.15 ± 2.83 66.02 ± 3.00 66.43 ± 2.48 0.957
Specific growth rate, %/d 5.96 ± 0.08 5.99 ± 0.07 5.99 ± 0.06 0.970
Feed conversion ratio 0.85 ± 0.05 0.86 ± 0.05 0.87 ± 0.06 0.985
Feed intake, % of body weight/d 2.83 ± 0.17 2.87 ± 0.17 2.88 ± 0.19 0.979
Body condition factor, g/cm3 of body length 3.52 ± 0.03a 3.33 ± 0.01b 3.29 ± 0.02b 0.000
Liver index, % 1.90 ± 0.07a 1.61 ± 0.26b 1.28 ± 0.23c 0.000
Spleen index, % 0.30 ± 0.02c 0.45 ± 0.03b 0.68 ± 0.03a 0.000
Intraperitoneal fat index, % 2.03 ± 0.11a 1.78 ± 0.18ab 1.45 ± 0.06b 0.041
  1. 1Values are means ± SEM, n = 3 tanks per group. Means without a common letter differ, P < 0.05. Body condition factor = body weight (g) × 100 / body length3 (cm); Feed conversion ratio = amount of feed intake (g) / weight gain (g); Feed intake = 100 × total amount of the feed consumed (g) / [(initial body weight (g) + final body weight (g)) / 2]/ days; Organ index = organ weight (g) × 100 / body weight (g); Specific growth rate = (Ln final weight (g) – Ln initial weight (g)) × 100 / days; Weight gain = final weight (g) – initial weight (g)