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Table 4 Effect of dietary L-lysine·H2SO4 levels on serum amino acid concentrations of broilers 1

From: Effects of L-lysine·H2SO4 product on the intestinal morphology and liver pathology using broiler model

Items Dietary L-lysine·H2SO4 levels, % SEM P-value
0 1 4 7 10 ANOVA Linear Quadratic
Essential AA, nmol/mL
 Lysine 402.0c 576.5 c 1031.4b 1395.3a 1521.8a 105.18 < 0.01 < 0.01 < 0.01
 Arginine 374.9 310.3 281.7 319.4 284.4 43.55 0.58 0.21 0.37
 Histidine 114.9 145.6 137.3 144.7 157.7 14.91 0.36 0.07 0.20
 Isoleucine 112. 9b 170.9ab 189.0ab 231.9a 156.4ab 21.39 < 0.01 0.10 < 0.01
 Leucine 175.8b 258.0ab 229.0ab 283.0a 228.3ab 24.59 0.04 0.12 0.04
 Methionine 68.9 80.8 79.4 81.5 76.7 6.93 0.69 0.44 0.37
 Phenylalanine 121.5b 166.7a 178.8a 176.5a 138.7ab 11.96 < 0.01 0.30 < 0.01
 Threonine 623.5b 667.7b 776.7b 1070.5b 1453.0a 117.63 < 0.01 < 0.01 < 0.01
 Valine 169.4c 260.9b 312.9b 408.6a 310.1b 27.71 < 0.01 < 0.01 < 0.01
Non-essential AA, nmol/mL
 Alanine 1043.5b 1797.6ab 806.1b 2167.4a 848.9b 258.68 < 0.01 0.92 0.23
 Asparagine 79.9b 182.1ab 118.8ab 221.3a 143.4ab 30.28 0.02 0.11 0.07
 Glycine 764.9b 1058.2a 918.5ab 911.0ab 845.5ab 66.07 0.05 0.95 0.09
 Cysteine 304.9 403.0 296.5 415.1 238.6 53.94 0.12 0.57 0.22
 Proline 1926.8ab 2622.0a 1464.6b 1881.1ab 2415.6a 204.41 < 0.01 0.80 0.50
 Serine 647.1 764.4 601.3 656.5 751.3 58.40 0.27 0.63 0.71
 Tyrosine 109.6 153.1 137.4 137.9 143.2 12.26 0.17 0.21 0.21
  1. 1Means in the same row with different superscripts significantly differ from one another (P <  0.05). AA amino acid, SEM standard error of the mean; n = 6/diet