Table 5. Growth performance of broilers fed gradient levels of dig. Lys from 12 to 28 d of age1 (Experiment 2).
| Item | BW gain, g | FCR2, g/g | Feed intake, g | Lys intake, g/d |
|---|---|---|---|---|
| Digestible Lys, % | ||||
| 0.77% | 1,040 | 1.734 | 1,803 | 1.16 |
| 0.85% | 1,186 | 1.626 | 1,928 | 1.37 |
| 0.93% | 1,255 | 1.564 | 1,964 | 1.52 |
| 1.01% | 1,282 | 1.522 | 1,951 | 1.64 |
| 1.09% | 1,271 | 1.505 | 1,913 | 1.74 |
| 1.17% | 1,290 | 1.507 | 1,943 | 1.90 |
| SEM | 13.14 | 0.012 | 9.10 | 0.04 |
| P-value | ||||
| Linear response | 0.0001 | 0.0001 | 0.0001 | 0.0001 |
| Quadratic response | 0.0001 | 0.0001 | 0.0001 | 0.0001 |
1 Values are least square means of 8 replicates with 25 birds each for 0.77% digestible Lys and 16 replicates with 25 birds each for all other treatments.
2 Feed conversion ratio corrected for mortality weight.