Table 7.
Summary statistics for prediction of the apparent ileal digestibility (percentage of intake) of crude protein and amino acids in pig feedstuffs.
| Item | N | Min | Max | Mean | SD | Factors | SEC | RSQ | SECV |
|---|---|---|---|---|---|---|---|---|---|
| CP | 144 | 34.9 | 93.7 | 73.4 | 7.2 | 6 | 3.12 | 0.81 | 4.03 |
| Indispensable amino acids | |||||||||
| LYS | 102 | 62.4 | 97.7 | 84.0 | 7.9 | 8 | 2.60 | 0.89 | 3.67 |
| MET | 102 | 55.0 | 97.6 | 85.4 | 6.2 | 9 | 2.31 | 0.86 | 4.17 |
| CYS | 102 | 15.0 | 93.1 | 74.4 | 10.1 | 4 | 4.99 | 0.76 | 6.04 |
| THR | 102 | 47.4 | 90.4 | 72.9 | 8.3 | 7 | 3.41 | 0.83 | 4.68 |
| ILE | 94 | 64.1 | 94.2 | 80.2 | 5.7 | 4 | 2.73 | 0.77 | 3.25 |
| LEU | 94 | 67.0 | 96.7 | 82.5 | 5.8 | 7 | 2.13 | 0.86 | 2.90 |
| HIS | 94 | 64.3 | 97.1 | 83.5 | 5.2 | 6 | 2.04 | 0.85 | 2.67 |
| PHE | 94 | 54.2 | 96.1 | 83.1 | 6.6 | 5 | 2.68 | 0.83 | 3.22 |
| VAL | 94 | 61.4 | 94.7 | 78.4 | 6.3 | 9 | 2.21 | 0.88 | 3.64 |
| ARG | 94 | 70.6 | 96.3 | 87.7 | 5.5 | 9 | 2.03 | 0.86 | 3.42 |
| TRP | 38 | 66.5 | 94.7 | 81.8 | 7.0 | 2 | 3.98 | 0.68 | 4.93 |
| Dispensable amino acids | |||||||||
| ALA | 94 | 50.7 | 91.4 | 72.4 | 7.0 | 7 | 3.47 | 0.76 | 4.79 |
| ASP | 94 | 58.9 | 93.2 | 74.8 | 7.4 | 4 | 3.72 | 0.75 | 4.39 |
| GLU | 94 | 62.9 | 95.6 | 87.6 | 5.4 | 5 | 2.20 | 0.83 | 3.07 |
| GLY | 94 | 23.5 | 85.2 | 64.7 | 11.1 | 5 | 6.09 | 0.70 | 7.68 |
| PRO | 94 | 6.5 | 96.6 | 79.3 | 13.1 | 8 | 4.90 | 0.86 | 8.54 |
| SER | 94 | 49.4 | 93.3 | 78.0 | 8.2 | 5 | 3.65 | 0.80 | 4.15 |
| TYR | 80 | 53.9 | 93.2 | 82.3 | 6.6 | 4 | 2.96 | 0.80 | 3.43 |
N = the number of samples; SEC = standard error of calibration; RSQ = regression coefficient; SECV = standard error of cross validation; CP = crude protein; LYS = lysine; MET = methionine; CYS = cysteine; THR = threonine; ILE = isoleucine; LEU = leucine; HIS = histidine; PHE = phenylalanine; VAL = valine; ARG = arginine; TRP = tryptophan; ALA = alanine; ASP = aspartic acid; GLU = glutamic acid; GLY = glycine; PRO = proline; SER = serine; TYR = tyrosine.