Table 1 Sample size in different categories of poultry production system
|  | Free-range (<=50 birds) | Small-scale (51–999 birds) | Medium-scale (1000–5000 birds) | Large-scale (>5000 birds) | All households |
|---|---|---|---|---|---|
Anambra | 163 | 34 | 5 | 1 | 203 |
Lagos | 121 | 49 | 23 | 15 | 208 |
Kano | 95 | 66 | 22 | 17 | 200 |