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Table 3 Relative frequencies of micro-organisms isolated from milk samples of subclinical mastitis cases.

From: Occurrence of Clinical and Sub-Clinical Mastitis in Dairy Herds in the West Littoral Region in Uruguay

Microorganism Number of isolates Percentage
Staphylococcus aureus 321 62.8
Streptococcus agalactiae 58 11.3
Enterococcus sp. 42 8.2
Coagulase Negative 37 7.4
Staphylococci   
Staphylococcus hyicus (13)  
Staphylococcus chromogenes (11)  
Staphylococcus epidermidis (3)  
Staphylococcus simulans (2)  
Staphylococcus warneri (1)  
Staphylococcus haemolyticus (1)  
CNS novobiocin resistant strains (6)  
Streptococcus uberis 32 6.4
Streptococcus dysgalactiae 9 1.8
Escherichia coli 8 1.5
Staphylococcus hyicus   
(coagulase-positive) 3 0.6
Total 511 100
  1. * In brackets, number of strains to respective staphylococci.