Table 3.
Means and standard deviations of the Enterobacteriaceae and mesophilic aerobic counts on the surface of the pig carcasses in function of the employed inspection system and the time of sample collection.
| Treatment | Sampling Time | Means | Pr > χ2 | |||
|---|---|---|---|---|---|---|
| 5:30 a.m. | 8:30 a.m. | 11:30 a.m. | 2:30 p.m. | |||
| Enterobacteriaceae—log (CFU/cm2) | ||||||
| Risk-Based | −3.293 ± 0.695 b | −0.592 ± 0.466 a | −1.621 ± 0.492 ab | −0.921 ± 0.473 ab | −1.607 ± 0.279 | 0.0079 |
| Traditional | 0.247 ± 0.457 | −0.697 ± 0.471 | −0.866 ± 0.472 | 0.593 ± 0.451 | −0.181 ± 0.235 | 0.0666 |
| Mean | −1.523 ± 0.420 b | −0.645 ± 0.333 ab | −1.244 ± 0.344 ab | −0.164 ± 0.328 a | 0.0319 | |
| Pr > χ2 | <0.0001 | 0.8735 | 0.2640 | 0.0200 | <0.0001 | |
| Mesophilic aerobic counts—log (CFU/cm2) | ||||||
| Risk-Based | 3.613 ± 0.353 | 3.509 ± 0.316 | 3.410 ± 0.316 | 3.449 ± 0.316 | 3.495 ± 0.163 | 0.9765 |
| Traditional | 4.599 ± 0.330 | 4.352 ± 0.327 | 4.296 ± 0.325 | 5.155 ± 0.347 | 4.601 ± 0.168 | 0.2579 |
| Mean | 4.106 ± 0.242 | 3.930 ± 0.227 | 3.853 ± 0.227 | 4.302 ± 0.234 | 0.5234 | |
| Pr > χ2 | 0.0414 | 0.0639 | 0.0505 | 0.0003 | <0.0001 | |
a, b, ab Means followed by different letters in the rows differ according to the Tukey’s test (p ≤ 0.05).