Table 1 Differentiation of G. parasuis strains into virulent and non-virulent by PCR assay and its frequency by farm, health status and production system type in 51 weaning piglets
Item | Level | Virulent strains N (%) | Non-virulent strains N (%) | Total N (%) |
|---|---|---|---|---|
Health status | Control (GM, PT, VL) | 2 (8) | 14 (52) | 16 (31) |
Glässer’s disease (MT, MC, RC, EJ) | 22 (92) | 13 (48) | 35 (69) | |
Production system type | Multi-sites (GM, PT, EJ, RC, MT) | 24 (100) | 24 (89) | 48 (94) |
Farrow to finish (MC, VL) | 0 (00) | 3 (11) | 3 (6) | |
Farm | EJ | 10 (42) | 0 (0) | 10 (20) |
GM | 2 (8) | 9 (33) | 11 (22) | |
MC | 0 (00) | 0 (00) | 0 (00) | |
MT | 6 (25) | 6 (22) | 12 (23) | |
PRAT | 0 (00) | 2 (8) | 2 (4) | |
RC | 6 (25) | 7 (26) | 13 (25) | |
VL | 0 (00) | 3 (11) | 3 (6) | |
Total | 24 (47) | 27 (53) | 51 (100) | |