| Variables | Total coliform count |
| Production system (n = 40) | *** |
| Pastoral | 4.18 ± 0.15a |
| Agro-pastoral | 3.12 ± 0.15b |
| Milk sources (n = 40) | *** |
| Milk equipment | 4.71 ± 0.16a |
| Udder | 2.59 ± 0.16b |
| Production system * milk sources | ** |
| Pastoral * milk equipment | 5.21 ± 0.20a |
| Agro-pastoral * milk equipment | 4.20 ± 0.20b |
| Pastoral * udder | 3.14 ± 0.20c |
| Agro-pastoral * udder | 2.03 ± 0.20d |
| Overall mean | 3.65 ± 0.19 |