Table 1.
Summary of results of five efficacy studies with Bacillus subtilis PB6 in sows
| Trial no | Bacillus subtilis PB6 (CFU/kg feed) | Number of sows | Piglets born alive (n) | Piglet weight at birth (kg) | No piglets at weaning (n) | Piglet weight at weaning (kg) | Average daily gain during suckling (kg) |
|---|---|---|---|---|---|---|---|
| 1 | 0 | 15 | 13.3 | 1.54 | 10.8 | 7.15 | 0.20 |
| 1 × 107 | 23 | 12.5 | 1.49 | 9.3 | 7.62 | 0.21 | |
| 5 × 107 | 22 | 14.0 | 1.53 | 11.1 | 7.98 | 0.23 | |
| 1 × 108 | 21 | 13.2 | 1.58 | 10.7 | 8.05 | 0.22 | |
| 2 | 0 | 25 | 12.5 | 1.50 | 11.3 | 8.26 | 0.27 |
| 1 × 108 | 24 | 12.2 | 1.46 | 10.9 | 8.97a | 0.28 | |
| 3 | 0 | 10 | 12.0 | 1.63 | 9.7 | 6.75 | 0.19 |
| 1 × 108 | 12 | 13.3 | 1.33a | 10.9 | 7.97a | 0.22a | |
| 4 | 0 | 12 | 13.7 | 1.53 | n.r. | 5.82 | 0.23 |
| 1 × 108 | 12 | 13.0 | 1.50 | n.r. | 6.39 | 0.25 | |
| 5 | 0 | 40 | 11.3 | 1.62 | 9.8 | 6.92 | 0.19 |
| 1 × 108 | 40 | 11.2 | 1.59 | 9.8 | 6.85 | 0.19 |
CFU: colony forming unit; n.r. not reported.
a
Significantly different from the control value at p < 0.05.