| Butcher A | ||||||
| Samples | Escherichia coli (CFU/ml) | Listeria monocytogenes Presence (+) /absence (−) | Sulfite-reducing clostridia Presence (+) /absence (−) | |||
| 1. day | 30. day | 1. day | 30. day | 1. day | 30. day | |
| Wings | 1.52 | 0 | − | − | − | − |
| Drumstick | 2.26 | 0.80 | − | − | − | − |
| Chests | 1.13 | 0 | − | − | − | − |
| Offal | 2.3 | 0.6 | − | − | − | − |
| Butcher B | ||||||
| Wings | 1.70 | 0 | − | − | − | − |
| Drumstick | 2.11 | 0.40 | − | − | − | − |
| Chests | 0.80 | 0 | − | − | − | − |
| Offal | 2.21 | 0.7 | − | − | − | − |