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Table 8 Prediction equations of amino acids true ileal digestibility from protein true ileal digestibility [10]

From: Alternative prediction methods of protein and energy evaluation of pig feeds

Equationsa R 2
TIDIN VITRO Lys = 26.1 + 0.72 × TIDIN VITRO P 0.79
TIDIN VITRO Met = 9.9 + 0.91 × TIDIN VITRO P 0.83
TIDIN VITRO Cys = 24.0 + 0.72 × TIDIN VITRO P 0.60
TIDIN VITRO Thr = 25.5 + 0.71 × TIDIN VITRO P 0.82
TIDIN VITRO Ile = –1.4 + 1.01 × TIDIN VITRO P 0.85
TIDIN VITRO Arg = 46.1 + 0.52 × TIDIN VITRO P 0.57
TIDIN VITRO His = –5.1 + 1.06 × TIDIN VITRO P 0.95
TIDIN VITRO Leu = 19.8 + 0.78 × TIDIN VITRO P 0.84
TIDIN VITRO Phe = –1.1 + 1.01 × TIDIN VITRO P 0.88
TIDIN VITRO Val = 16.5 + 0.81 × TIDIN VITRO P 0.84
  1. aTIDIN VITRO AA and TIDIN VITRO P – True ileal digestibility of individual amino acids and protein determined in vitro expressed in %; Lys Lysine, Met Methionine, Cys Cysteine, Thr Threonine, Ile Isoleucine, Arg Arginine, His Histidine, Leu Leucine, Phe Phenylalanine, Val Valine
  2. R 2 - coefficient of determination