Table 1.
Body weight of chickens and number of E. coli in the caecum of chickens in control (CTRL) and experimental (Exp) group.
| Body weight (g) |
E. coli counts (log CFU/g of caecum)a |
Experimental strain detection (number of positive chicken, colonization rateb) |
||||
|---|---|---|---|---|---|---|
| Week | Exp | CTRL | Exp | CTRL | Exp | CTRL |
| 1 | 126.4 ± 8.2 | 111.0 ± 17.8 | 6.38 ± 0.45* | 8.29 ± 0.70 | ND | 7/7 (+++) |
| 2 | 306.4 ± 90.9 | 262.3 ± 61.9 | 6.04 ± 0.47* | 7.83 ± 0.84 | ND | 7/7 (+++) |
| 3 | 743.6 ± 184.5 | 728.1 ± 88.0 | 6.58 ± 0.70 | 6.46 ± 0.89 | ND | 3/7 (++) |
| 4 | 849.0 ± 193.6 | 704.1 ± 51.9 | 5.10 ± 1.23 | 6.08 ± 1.17 | 1/7 (+) | 4/7 (++) |
⁎
Significantly different from control group of the same age by ANOVA with post hoc Tuckey test.
a
E. coli growing on a medium with ciprofloxacin.
b
Experimental strain detected in 10−6 to 10−5 dilution (+++), 10−4 to 10−3 dilution (++), 10−2 to 10−1 dilution (+), ND – not detected in any dilution.