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Table 5 Amino acid (g kg− 1) profile of Catla catla fed with C. sinensis-supplemented diets

From: Effect of dietary Citrus sinensis peel extract on growth performance, digestive enzyme activity, muscle biochemical composition, and metabolic enzyme status of the freshwater fish, Catla catla

Amino acids Dietary supplementary of C. sinensis g kg− 1
Control 2.00 (diet 1) 6.00 (diet 2) 10 (diet 3)
Essential Histidine 1.40 ± 0.19a 1.46 ± 0.39a 1.52 ± 0.25a 1.41 ± 0.26a
Isoleucine 1.35 ± 0.43b 1.72 ± 0.09ab 1.87 ± 0.11a 1.66 ± 0.13ab
Leucine 3.14 ± 0.80a 3.46 ± 0.11a 3.64 ± 0.25a 3.20 ± 0.61a
Lysine 0.48 ± 0.01c 1.10 ± 0.02ab 1.25 ± 0.16a 1.07 ± 0.03b
Methionine 1.31 ± 0.31b 1.67 ± 0.16ab 1.82 ± 0.16a 1.61 ± 0.20ab
Phenylalanine 1.56 ± 0.30b 1.71 ± 0.04a 1.81 ± 0.09a Trace
Threonine 3.63 ± 0.29c 4.62 ± 0.06ab 5.01 ± 0.36a 4.45 ± 0.12b
Tryptophan 5.02 ± 0.16c 5.52 ± 0.01ab 5.82 ± 0.16a 5.11 ± 0.37bc
Valine 1.65 ± 0.17c 1.91 ± 0.02ab 1.97 ± 0.01a 1.80 ± 0.01bc
Conditionally essential Arginine 4.36 ± 0.04c 4.57 ± 0.18b 4.81 ± 0.04a 4.55 ± 0.04b
Cysteine 1.66 ± 0.29a 1.91 ± 0.06a 1.97 ± 0.01a 1.81 ± 0.16a
Glutamine 1.63 ± 0.14b 1.87 ± 0.12a 1.93 ± 0.05a 1.77 ± 0.11ab
Glycine 1.88 ± 0.10c 4.31 ± 0.44ab 4.88 ± 0.10a 4.17 ± 0.40b
Proline 1.90 ± 0.22a 1.99 ± 0.00a 2.08 ± 0.76a 1.91 ± 0.07a
Tyrosine 2.15 ± 0.74b 2.74 ± 0.14ab 2.97 ± 0.01a 2.63 ± 0.21ab
Non-essential Alanine 1.47 ± 0.25a 1.54 ± 0.08a 1.62 ± 0.17a 1.53 ± 0.04a
Aspartic acid 0.19 ± 0.01b 1.84 ± 0.11a 2.01 ± 0.50a 1.69 ± 0.07a
  1. Mean values within the same row sharing the same superscript are not significantly different (P ˃ 0.05), Citrus sinensis-free diet; n = 3 (three samples from each treatment), mean ± SD