Table 9.
Prediction equations of standardized ileal digestibility of amino acid based on the chemical components of rapeseed meal in 18-day-old Pekin ducks (n = 22).
| Prediction equations | R2 | P-value |
|---|---|---|
| SID Lys = 0.264 + 1.231DM-0.914CP-1.342EE-1.081CF + 0.334ADF + 0.131PS | 0.958 | <0.0001 |
| SID Arg = 92.741-0.564CF-0.529Ash | 0.359 | 0.0146 |
| SID Ile = 90.568-0.790CF-0.602Ash | 0.717 | <0.0001 |
| SID Leu = 91.928-0.543CF-0.583Ash | 0.348 | 0.0171 |
| SID Thr = 97.514-1.441CF + 0.227NDF-1.800Ash | 0.684 | 0.0003 |
| SID Val = 89.243-0.681CF-0.569Ash | 0.476 | 0.0022 |
| SID Phe = 90.650-0.598CF | 0.390 | 0.0019 |
| SID His = 95.146-0.220EE-0.826CF | 0.767 | <0.0001 |
| SID Asp = 92.557-1.390CF + 0.548ADF-1.001Ash | 0.584 | 0.0016 |
| SID Ser = 95.511-0.174EE-0.765CF-0.891Ash | 0.563 | 0.0016 |
| SID Glu = 101.576-1.188CF + 0.191NDF-1.368Ash | 0.479 | 0.0099 |
| SID Gly = 192.358-0.800DM-0.785CP-2.024CF + 0.612NDF-2.169Ash + 0.085PS | 0.631 | 0.0154 |
| SID Ala = 186.586-0.754DM-0.703CP-2.002CF + 0.637NDF-2.065Ash + 0.093PS | 0.652 | 0.0107 |
| SID Cys = 80.803-0.140NDF + 0.071PS | 0.837 | <0.0001 |
| SID Tyr = 93.710-0.708CF-0.653Ash | 0.416 | 0.0060 |
| SID Pro = 94.529-0.756CF-0.551Ash | 0.400 | 0.0101 |
Abbreviations: ADF, acid detergent fiber, Ala, Alanine; Arg, arginine; Asp, aspartic acid; CF, crude fiber; Cys, cysteine; EE, ether extract; Glu, glutamic acid; Gly, glycine; His, histidine; Ile, isoleucine; Leu, leucine; Lys, lysine; NDF, neutral detergent fiber; Phe, phenylalanine; Pro, proline; PS, protein solubility; Ser, serine; SID, standardized ileal digestibility; Thr, threonine; Tyr, tyrosine; Val, valine.