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Characteristics of Ontario broiler flocks for which a performance questionnaire was completed by the participating producer (n = 53).
| Variable | Medicated flocks (n = 30) | Vaccinated flocks (n = 23) |
|---|---|---|
| Breed | ||
| Cobb 500 | 12 | 4 |
| Ross 708 | 18 | 19 |
| Sex | ||
| Cockerels | 6 | 1 |
| Mixed | 19 | 19 |
| Pullets | 5 | 3 |
| No. of birds placed | ||
| Mean | 21,785 | 26,281 |
| Median | 18,717 | 24,888 |
| Min | 7,750 | 7,956 |
| Max | 48,849 | 54,570 |
