Table 1.
Brachyspira hyodysenteriae strains, experimental set-up and results for faecal excretion and clinical signs of SD
| Virulence trial number | B. hyodysenteriae strain | Strength of haemolysis | Model and inoculation route | Number of pigs positive for faecal excretiona | Number of pigs with SDa |
|---|---|---|---|---|---|
| 1 | 8dII | Strong | Direct oral inoculation | 2/6 | 2/6 |
| 2 | B204 | Strong | Direct gastric inoculation | 5/9 | 5/9 |
| 3 | 49 | Strong | Seeder model | 5/14 | 4/14 |
| 4 | D28 | Weak | Direct oral inoculation | 5/8 | 0/8 |
| 5 | D28 | Weak | Direct gastric inoculation | 4/12 | 0/12 |
| Seeder vaccination experiment | D28 | Weak | Direct oral inoculation | 25/30 | 0/30 |
aGiven as proportion of total number of inoculated pigs.