Table 3.
Species and distribution of pathogens isolated from 396 dairy farms among seven dairy factories.
| Genus. | Species | No. of Pathogens Isolated (%) among Farms a | Total (%) (n = 396) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| A-1 (n = 50) | A-2 (n = 56) | B-1 (n = 120) | C-1 (n = 47) | D-1 (n = 58) | D-2 (n = 33) | D-3 (n = 32) | |||
| Escherichia coli | 0 (0.0) * | 0 (0.0) * | 37 (30.8) | 28 (59.6) * | 29 (50.0) | 26 (78.8) * | 29 (90.6) * | 149 (37.6) | |
| Enterococcus spp. | 20 (40.0) | 19 (33.9) * | 69 (57.5) | 30 (63.8) | 38 (65.5) | 23 (69.7) | 32 (100.0) * | 231 (58.3) | |
| Enterococcus faecalis | 18 (36.0) | 19 (33.9) * | 64 (53.3) | 25 (53.2) | 35 (60.3) | 21 (63.6) | 31 (96.9) * | 213 (53.8) | |
| Enterococcus faecium | 2 (4.0) | 2 (3.6) | 6 (5.0) | 11 (23.4) * | 6 (10.3) | 2 (6.1) | 1 (3.1) | 30 (7.6) | |
| Staphylococcus spp. | 48 (96.0) * | 52 (92.9) * | 40 (33.3) * | 24 (51.1) | 48 (82.8) * | 18 (54.5) | 8 (25.0) * | 238 (60.1) | |
| Staphylococcus aureus | 19 (38.0) | 52 (92.9) * | 0 (0.0) * | 3 (6.4) * | 5 (8.6) * | 13 (39.4) | 3 (9.4) | 95 (24.0) | |
| Coagulase-negative staphylococci | 37 (74.0) * | 8 (14.3) * | 40 (33.3) | 22 (46.8) | 44 (75.9) * | 8 (24.2) | 5 (15.6) * | 164 (41.4) | |
| Staphylococcus chromogenes | 35 (70.0) * | 6 (10.7) | 3 (2.5) * | 2 (4.3) | 12 (20.7) | 4 (12.1) | 1 (3.1) | 63 (15.9) | |
| Staphylococcus saprophyticus | 0 (0.0) | 1 (1.8) | 17 (14.2) | 12 (25.5) * | 14 (24.1) * | 1 (3.0) | 0 (0.0) | 45 (11.4) | |
| Staphylococcus xylosus | 1 (2.0) | 1 (1.8) | 6 (5.0) | 3 (6.4) | 6 (10.3) | 0 (0.0) | 0 (0.0) | 17 (4.3) | |
| Staphylococcus haemolyticus | 0 (0.0) | 0 (0.0) | 5 (4.2) | 1 (2.1) | 4 (6.9) | 1 (3.0) | 0 (0.0) | 11 (2.8) | |
| Staphylococcus simulans | 1 (2.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (1.7) | 2 (6.1) | 2 (6.3) | 6 (1.5) | |
| Staphylococcus sciuri | 0 (0.0) | 0 (0.0) | 2 (1.7) | 2 (4.3) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 5 (1.3) | |
| Staphylococcus capitis | 0 (0.0) | 0 (0.0) | 2 (1.7) | 0 (0.0) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 3 (0.8) | |
| Staphylococcus cohnii | 0 (0.0) | 0 (0.0) | 1 (0.8) | 0 (0.0) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 2 (0.5) | |
| Staphylococcus epidermidis | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (2.1) | 0 (0.0) | 0 (0.0) | 1 (3.1) | 2 (0.5) | |
| Staphylococcus equorum | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (2.1) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 2 (0.5) | |
| Staphylococcus gallinarum | 0 (0.0) | 0 (0.0) | 1 (0.8) | 0 (0.0) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 2 (0.5) | |
| Staphylococcus succinus | 0 (0.0) | 0 (0.0) | 2 (1.7) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (0.5) | |
| Staphylococcus hyicus | 0 (0.0) | 0 (0.0) | 1 (0.8) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (3.1) | 2 (0.5) | |
| Staphylococcus arlettae | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 1 (0.3) | |
| Staphylococcus lentus | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (1.7) | 0 (0.0) | 0 (0.0) | 1 (0.3) | |
| Streptococcus spp. | 6 (12.0) | 9 (16.1) | 27 (22.5) | 10 (21.3) | 16 (27.6) | 18 (54.5) * | 3 (9.4) | 89 (22.5) | |
| Streptococcus bovis | 0 (0.0) | 0 (0.0) | 14 (11.7) | 0 (0.0) | 3 (5.2) | 8 (24.2) * | 0 (0.0) | 25 (6.3) | |
| Streptococcus uberis | 1 (2.0) | 9 (16.1) * | 3 (2.5) | 3 (6.4) | 1 (1.7) | 0 (0.0) | 2 (6.3) | 19 (4.8) | |
| Streptococcus oralis | 3 (6.0) | 0 (0.0) | 0 (0.0) | 2 (4.3) | 4 (6.9) | 6 (18.2) * | 1 (3.1) | 16 (4.0) | |
| Streptococcus infantarius | 0 (0.0) | 0 (0.0) | 4 (3.3) | 0 (0.0) | 0 (0.0) | 3 (9.1) * | 0 (0.0) | 7 (1.8) | |
| Streptococcus agalactiae | 1 (2.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.3) | |
| Streptococcus intermedius | 0 (0.0) | 0 (0.0) | 1 (0.8) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.3) | |
| Unidentified | 1 (2.0) | 0 (0.0) | 5 (4.2) | 5 (10.6) | 8 (13.8) * | 1 (3.0) | 0 (0.0) | 20 (5.1) | |
a Seven factories were operated by four dairy companies, and the same capital letter indicates factories operated by the same company. * The asterisk indicates that prevalence of the pathogen isolated from the factory was significantly different than that of other factories using the Bonferroni correction.