Table 7. Effect of dietary feed-grade methionine isomers on incidence of foot pad demerits in 35-day-old broilers.
| Diet | Thermo-neutral control |
Acute heat stress |
||
|---|---|---|---|---|
| D-Methionine | L-Methionine | D-Methionine | L-Methionine | |
| Scores1 | ||||
| 1 | 15 | 23 | 15 | 24 |
| 2 | 7 | 6 | 8 | 2 |
| 3 | 8 | 1 | 7 | 4 |
| P value2 | 0.027 | 0.039 | ||
Scores: 1=No lesions, 2=initial lesion, 3=severe lesion
Chi-square tests - χ2 for the effect of dietary methionine isomers for each heat stress condition.