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Table 2 Prediction equations of standardized ileal digestibility in pigs from values obtained for rats

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

Equationsa n R 2
SIDPIG P = 21.822 + 0.70826 × SIDRAT P 13 0.759
SIDPIG Lys = 1.4407 + 0.98454 × SIDRAT Lys 15 0.929
SIDPIG Met = 9.7265 + 0.88122 × SIDRAT Met 14 0.445
SIDPIG Cys = 36.247 + 0.50543 × SIDRAT Cys 13 0.761
SIDPIG Thr = 13.491 + 0.84369 × SIDRAT Thr 15 0.887
SIDPIG Ile = 1.0205 + 1.0004 × SIDRAT Ile 15 0.947
  1. acalculated from results of Moughan et al. [22]; Moughan et al. [23]; Smith et al. [24]; Donkoh et al. [26]; Rutherfurd and Moughan [27]; Święch and Buraczewska [28]; Święch [91]
  2. SIDPIG and SIDRAT – Standardized ileal digestibility determined in pigs and rats expressed in %, respectively; P Protein, Lys Lysine, Met Methionine, Cys Cysteine, Thr Threonine, Ile Isoleucine
  3. R 2 – coefficient of determination