Table 1 Isolation frequency of Listeria from pig slaughter factory
Sample type | No. of samples | No. of Listeria | No. of positive samples (%) |
|---|---|---|---|
Slaughter area (A) | 80 | L. monocytogenes (6) L. innocua (1) | 7 (8.75) |
Cutting and deboning room (B) | 80 | L. monocytogenes (7) L. innocua (2) | 9 (11.25) |
Visceral area (C) | 80 | L. monocytogenes (11) L. innocua (1) L. welshimeri (11) | 23 (28.75) |
Meat cooling and refrigeration area (D) | 80 | L. monocytogenes (13) L. innocua (3) L. welshimeri (4) | 20 (25.00) |
Total | 320 | L. monocytogenes (37) L. innocua (7) L. welshimeri (15) | 59 (18.44) |