Table 2.
Total prevalence of E. coli isolated from all examined samples (feeder, drinker, wall, floor and organs of diseased broiler chickens)
| Sources | Type of samples | No. of examined samples | E. coli |
Chi square P value |
|
|---|---|---|---|---|---|
| No. | % | ||||
| Environmental samples | Feeder | 32 | 12 | 37.5 | 0.0792 NS |
| Drinker | 32 | 10 | 31.25 | ||
| Wall | 36 | 4 | 11.11 | ||
| Floor | 42 | 12 | 28.57 | ||
| Total | 142 | 38 | 26.76 | ||
| Organs of diseased broiler chickens (ExPEC) | Heart | 70 | 30 | 42.86 | < 0.0001* |
| Liver | 82 | 50 | 60.98 | ||
| Lung | 12 | 4 | 33.33 | ||
| Yolk | 30 | 6 | 20 | ||
| Spleen | 16 | 8 | 50 | ||
| Air sac | 16 | 16 | 100 | ||
| Total | 226 | 114 | 50.44 | < 0.0001* | |
| Total of all | 368 | 152 | 41.30 | ||
%The percentage was calculated according to the no. of each type of samples