TABLE 2.
Colonization of 1-day-old chickens following challenge with S. Enteritidisa
| No. of days postinoculation with BTNC0025 | BTNC0025 CFU/g (no. of culture-positive birds/total no. of birds) |
||
|---|---|---|---|
| Cecum | Liver | Spleen | |
| 1 | 7.7 ± 0.6 (5/5) | <2.3 (0/5) | <2.3 (0/5) |
| 3 | 6.4 ± 1.1 (5/5) | <2.3 (0/5) | <2.3 (0/5) |
| 6 | 6.9 ± 0.4 (5/5) | <2.3 (0/5) | <2.3 (0/5) |
| 10 | 5.1 ± 0.8 (5/5) | <2.3 (0/5) | <2.3 (0/5) |
| 15 | 5.0 ± 2.0 (4/5) | <2.3 (0/5) | <2.3 (0/5) |
| 21 | <2.3 (0/5) | <2.3 (0/5) | <2.3 (0/5) |
a
W-36 chicks (1 day old) were inoculated with ∼5 × 108 CFU of the rifampin-resistant “wild-type” strain (BTNC0025). Data shown are the mean log10 CFU values per gram of intestinal content or tissue homogenate from the indicated number of culture-positive birds among those sampled (shown in parentheses), with a detection limit of <2.3 log10 CFU/g.