Table 5.
Results of the Kruskal–Wallis test for the comparison of fungi and bacteria concentration, both on surfaces and in air, between the five swine farms (n = 24).
| Bacteria/Fungus | Swine Farming | n | Ranks | Test Statistics a | Kruskal–Wallis Multiple Comparisons | ||
|---|---|---|---|---|---|---|---|
| Mean Rank | Chi-Square | df | p | ||||
| Total Bacteria Surface (CFU·m−2) | A | 5 | 12.00 | 1.936 | 4 | 0.748 | |
| B | 5 | 10.00 | |||||
| C | 5 | 14.10 | |||||
| D | 4 | 10.75 | |||||
| E | 5 | 15.30 | |||||
| Gram Negative Bacteria-Surface (CFU·m−2) | A | 5 | 12.40 | 0.081 | 4 | 0.999 | |
| B | 5 | 12.60 | |||||
| C | 5 | 12.00 | |||||
| D | 4 | 12.75 | |||||
| E | 5 | 12.80 | |||||
| Fungi (MEA)-Surface (CFU·m−2) | A | 5 | 17.90 | 13.699 | 4 | 0.008 * | C ≠ D (p = 0.036) |
| B | 5 | 12.50 | |||||
| C | 5 | 6.00 | |||||
| D | 4 | 19.50 | |||||
| E | 5 | 8.00 | |||||
| Fungi (DG18)-Surface (CFU·m−2) | A | 5 | 18.60 | 8.430 | 4 | 0.077 | |
| B | 5 | 13.60 | |||||
| C | 5 | 10.30 | |||||
| D | 4 | 8.50 | |||||
| E | 5 | 10.70 | |||||
| Total bacteria-Air (CFU·m−3) | A | 5 | 12.10 | 3.676 | 4 | 0.452 | |
| B | 5 | 14.10 | |||||
| C | 5 | 10.40 | |||||
| D | 4 | 17.50 | |||||
| E | 5 | 9.40 | |||||
| Gram Negative Bacteria-Air (CFU·m−3) | A | 5 | 10.20 | 7.132 | 4 | 0.129 | |
| B | 5 | 15.00 | |||||
| C | 5 | 15.00 | |||||
| D | 4 | 16.50 | |||||
| E | 5 | 6.60 | |||||
| Fungi (MEA)-Air (CFU·m−3) | A | 5 | 6.40 | 17.602 | 4 | 0.001 * | A ≠ D (p = 0.007) |
| B | 5 | 8.20 | B ≠ D (p = 0.025) | ||||
| C | 5 | 9.40 | |||||
| D | 4 | 22.50 | |||||
| E | 5 | 18.00 | |||||
| Fungi (DG18)-Air (CFU·m−3) | A | 5 | 11.60 | 12.621 | 4 | 0.013 * | B ≠ D (p = 0.005) |
| B | 5 | 6.10 | |||||
| C | 5 | 10.80 | |||||
| D | 4 | 22.50 | |||||
| E | 5 | 13.50 | |||||
a Kruskal–Wallis test; * statistically-significant differences at the 5% significance level.