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Descriptive characteristics of 39 laying hen flocks housed in non-cage systems
| N | Mean (SD) | Median (Range) | |
|---|---|---|---|
| Flock age (wks) | 39 |
46.1 (13.87) |
45.0 (19–68) |
| Flock size | 37 | 13,945 (10,949.73) |
11,950.0 (119–41,478) |
| FD prevalence (%) | 1950a | 25.9 (31.70) |
10.0 (0–100) |
aTotal number of birds scored for FD (39 × 50)
