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.

Mørk et al. Acta Veterinaria Scandinavica 2007 49:23   doi:10.1186/1751-0147-49-23