Table 8.
Summary statistics for prediction of total tract digestibility (percentage of intake) of crude protein and amino acids in pig feedstuffs.
| Item | N | Min | Max | Mean | SD | Factors | SEC | RSQ | SECV |
|---|---|---|---|---|---|---|---|---|---|
| CP | 151 | 35.5 | 96.3 | 80.8 | 8.0 | 10 | 2.38 | 0.91 | 3.68 |
| Indispensable amino acids | |||||||||
| LYS | 72 | 24.3 | 97.8 | 79.0 | 11.8 | 8 | 3.16 | 0.93 | 5.36 |
| MET | 72 | 19.0 | 97.4 | 78.7 | 11.6 | 8 | 3.21 | 0.92 | 6.09 |
| CYS | 72 | 22.8 | 92.0 | 84.2 | 8.2 | 8 | 1.61 | 0.96 | 4.47 |
| THR | 72 | 37.3 | 96.1 | 78.3 | 9.8 | 7 | 3.23 | 0.89 | 4.95 |
| ILE | 64 | 37.5 | 95.9 | 80.4 | 10.0 | 7 | 2.47 | 0.94 | 3.77 |
| LEU | 64 | 47.0 | 97.5 | 83.7 | 8.4 | 6 | 2.23 | 0.93 | 3.48 |
| HIS | 64 | 54.5 | 98.0 | 87.8 | 6.8 | 7 | 1.69 | 0.94 | 3.09 |
| PHE | 64 | 40.6 | 98.1 | 84.2 | 8.7 | 8 | 1.68 | 0.96 | 2.76 |
| VAL | 64 | 42.4 | 96.8 | 81.4 | 9.0 | 7 | 2.33 | 0.93 | 3.56 |
| ARG | 64 | 56.4 | 96.6 | 88.0 | 6.5 | 8 | 1.61 | 0.94 | 2.71 |
| TRP | 23 | 66.2 | 94.5 | 85.3 | 7.2 | 4 | 2.48 | 0.88 | 6.20 |
| Dispensable amino acids | |||||||||
| ALA | 64 | 34.2 | 93.6 | 74.5 | 11.0 | 5 | 3.58 | 0.89 | 5.02 |
| ASP | 64 | 46.1 | 95.6 | 78.5 | 10.8 | 4 | 3.73 | 0.88 | 4.19 |
| GLU | 64 | 44.0 | 97.4 | 90.7 | 7.0 | 8 | 1.11 | 0.97 | 3.96 |
| GLY | 64 | 34.0 | 92.2 | 78.8 | 9.5 | 7 | 2.60 | 0.92 | 4.53 |
| PRO | 64 | 60.5 | 98.6 | 90.9 | 5.7 | 7 | 1.25 | 0.95 | 2.06 |
| SER | 64 | 47.6 | 95.0 | 84.0 | 8.0 | 7 | 2.01 | 0.94 | 2.80 |
| TYR | 57 | 27.4 | 95.0 | 80.4 | 10.4 | 7 | 2.37 | 0.95 | 4.96 |
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.