Table 3. Growth performance of broilers fed gradient levels of dig. Lys from 1 to 12 d of age1 (Experiment 1).
| Item | BW gain, g | FCR2, g/g | Feed intake, g | Lys intake, g/d |
|---|---|---|---|---|
| Digestible Lys, % | ||||
| 0.97% | 295.4 | 1.377 | 406.8 | 0.329 |
| 1.05% | 340.8 | 1.241 | 423.0 | 0.370 |
| 1.13% | 359.7 | 1.206 | 433.5 | 0.408 |
| 1.21% | 361.2 | 1.181 | 426.3 | 0.430 |
| 1.29% | 366.5 | 1.178 | 431.7 | 0.464 |
| 1.37% | 367.1 | 1.192 | 437.5 | 0.500 |
| SEM | 3.92 | 0.012 | 2.69 | 0.008 |
| P-value | ||||
| Linear response | 0.0001 | 0.0001 | 0.1332 | 0.0001 |
| Quadratic response | 0.0001 | 0.0001 | 0.1819 | 0.3285 |
1 Values are least square means of 8 replicates with 25 birds each for 0.97% digestible Lys and 16 replicates with 25 birds each for all other treatments.
2 Feed conversion ratio corrected for mortality weight.