Table 2.
Average number of E. coli isolates from E. coli–vaccinated (vacc.) and control (not vacc.) chickens at F1 and F2 in third and sixth weeks of birds' life.
| Week | Farm and chicken house (E. coli vaccinated or not vaccinated) |
|||
|---|---|---|---|---|
| F1 vacc. | F1 not vacc. | F2 vacc. | F2 not vacc. | |
| 3 | 5.33 | 8 | 8.67 | 10.33 |
| 6 | 5.331 | 7.67 | 7.331 | 10 |
Abbreviation: E. coli, Escherichia coli.
1
Significant difference in the number of E. coli isolates in vaccinated birds, at different sampling points, in comparison to the control chickens on a farm.