Table 6.
Apparent total tract digestibility (ATTD; %) of DM and CP of the 12 experimental diets differing in standardized ileal digestible (SID) Lys levels or dietary CP fed to piglets between 4 and 9 wk of age (n = 6 pens per treatment)
| 10 g SID Lys | 11 g SID Lys | P-value | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CP, g/kg | 139 | 149 | 159 | 168 | 178 | 188 | 139 | 149 | 160 | 170 | 181 | 192 | SEM | Lys | CP |
| ATTD DM | 87.18 | 87.35 | 86.09 | 87.21 | 84.12 | 85.61 | 86.19 | 86.37 | 86.34 | 85.33 | 86.38 | 85.57 | 0.13 | 0.387 | <0.001 |
| ATTD CP | 80.35 | 81.08 | 80.02 | 82.32 | 78.64 | 80.29 | 80.47 | 81.88 | 81.22 | 79.85 | 81.51 | 80.71 | 0.22 | 0.201 | 0.426 |