Table 2.
Calculated prevalence and bacterial counts for the simulated scenarios with seeder birds introducing ESBL-producing E. coli into the flock (100 iterations).
| Seeder–Sentinel Ratio | No. of Chicks | Feeding Duration [Days] | Inoculation | Prevalence * [%] |
ESBL-Producing E. coli in Feces * [log10 CFU/g] |
ESBL-Producing E. coli in Litter * [log10 CFU/g] |
||||
|---|---|---|---|---|---|---|---|---|---|---|
| Amount | On Day | Maximum | On Day | Max. | On Day | Max. | On Day | |||
| 1:1 | 10 | 21 | 102 CFU | 1 | 99.2 ± 4.42 | 7 | 4.51 ± 4.42 | 21 | 3.71 ± 3.66 | 17 |
| 1:5 | 20 | 36 | 102 CFU | 3 | 97.15 ± 14.67 | 15 | 4.41 ± 4.26 | 23 | 3.6 ± 3.43 | 23 |
* Both the average of the prevalence and the CFU values per gram litter are calculated over all iterations. The excreted CFU values are obtained by calculating the average over all animals in one iteration at first and then over all iterations.