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Table 2 Amino acid concentrations (μ M ) in plasma of adult cats

From: Phenylalanine flux and gastric emptying are not affected by replacement of casein with whey protein in the diet of adult cats consuming frequent small meals

Amino acid Casein Whey Pooled SEM P
Alanine 654 678 48 0.74
Arginine 133 136 8 0.80
Aspartate 21 38 4 0.01
Citrulline 66 43 8 0.09
Cysteine 28 34 4 0.36
Glutamate 64 88 7 0.03
Histidine 134 122 11 0.45
Isoleucine 90 104 12 0.42
Leucine 174 187 13 0.50
Lysine 218 210 15 0.70
Methionine 139 73 22 0.09
Ornithine 49 56 5 0.38
Phenylalanine 87 103 7 0.12
Taurine 55 57 9 0.87
Tryptophan 103 108 15 0.83
Tyrosine 92 98 14 0.78
Valine 251 301 33 0.31
Indispensable Amino Acids 1242 1123 81 0.37
Dispensable Amino Acids 973 1005 65 0.74
Total Amino Acids 2215 2114 150 0.67
  1. Data are means from 8 to 12 h after initiating consumption of casein- or whey-based diets at 30-min intervals (n = 8).