Table 1.
Effects of pre-colonization with the ΔahpC mutant on body weight increase in chickens.
| Day | 0 d | 21 d | 42 d | |
|---|---|---|---|---|
| 1st Experiment | Control (PBS; n = 11) | 47.06 ± 2.92 g | 890.36 ± 70.29 g | 2114.55 ± 204.76 g |
| Control (WT; n = 11) | 44.09 ± 3.40 g | 981.00 ± 104.05 g | 2101.50 ± 363.49 g | |
| Treated group (ΔahpC + WT; n = 11) 1 | 45.91 ± 3.02 g | 993.18 ± 91.17 g | 2289.55 ± 246.95 g | |
| 2nd Experiment | Control (PBS; n = 11) | 26.27 ± 4.45 g | 980.00 ± 27.93 g | 2400.00 ± 163.30 g |
| Control (WT; n = 11) | 38.64 ± 6.36 g | 940.00 ± 84.38 g | 2150.00 ± 190.03 g | |
| Treated group (ΔahpC + WT; n = 11) 2 | 42.91 ± 6.01 g | 910.91 ± 126.29 g | 2218.18 ± 348.76 g | |
| Treated group (ΔahpC + WT; n = 11) 3 | 39.55 ± 4.72 g | 906.36 ± 60.71 g | 2245.45 ± 136.85 g | |
The dosages of the ΔahpC mutant were ca. 5 × 107 CFU/bird 1, 5 × 106 CFU/bird (two challenges days 3 and 7) 2, and 5 × 108 CFU/bird 3.