Table 2.
Results of culture of secretions recovered from 547 mammary glands with clinical mastitis.
| Bacteriological finding | n | % |
| Staphylococcus aureus | 357 | 65.3 |
| Coagulase-negative staphylococci | 16 | 2.9 |
| Streptococcus uberis | 9 | 1.6 |
| Streptococcus dysgalactiaea | 8 | 1.5 |
| Streptococcus spp.b | 8 | 1.5 |
| Enterococcus spp. | 4 | 0.7 |
| Escherichia coli | 35 | 6.4 |
| Klebsiella pneumoniae | 2 | 0.4 |
| Enterobacter spp. | 3 | 0.5 |
| Mannheimia haemolytica | 10 | 1.8 |
| Arcanobacterium pyogenes | 4 | 0.7 |
| Clostridium perfringens | 7 | 1.3 |
| Pasteurella spp.c | 4 | 0.7 |
| No growth | 72 | 13.2 |
| Contaminated samplesd | 8 | 1.5 |
a Subsp. dysgalactiae.
b Other than Str. dysgalactiae and Str. uberis.
c Pasteurella mairii (2 samples), Pasteurella multocida (2 samples).
d If blood agar plates contained more than two different types of colonies.