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Table 1 Distribution of bacterial isolates [number (%)] from 285 milk samples collected from dairy cows with subclinical mastitis (i.e., SCC > 200,000 cells/ml and CMT 2+) in split-calving and spring-calving herds

From: Prevalence of pathogens causing subclinical mastitis in 15 dairy herds in the Republic of Ireland

Farm No. of samples No. of growth Staph. aureus Strep. uberis Strep. agalactiae Strep dysgalactiae. Mixed Coagulase-negative Staph. Coliforms Minor pathogens Contaminants
Split-calving herds            
A 36 14 (39) 1 (3) 13 (36) 0 1 (3) 0 1 (3) 0 3 (9) 3 (9)
D 10 2 (20) 2 (20) 4 (40) 0 0 1 (10) 0 0 0 1 (10)
G 6 3 (50) 1 (16) 1 (16) 0 0 1 (16) 0 0 0 0
I 31 13 (42) 5 (16) 8 (26) 0 0 0 0 2 (6) 3 (10) 0
L 16 3 (19) 6 (38) 3 (19) 0 1 (6) 1 (6) 0 0 2 (13) 0
N 11 3 (27) 2 (18) 0 0 2 (18) 1 (9) 1 (9) 0 2 (18) 0
Total 110 38 (35) 17 (15) 29 (26) 0 4 (4) 4 (4) 2 (2) 2 (2) 10 (9) 4 (4)
Split-calving herds            
B 12 0 6 (50) 0 0 0 4 (33) 1 (13) 1 (13) 0 0
C 13 3 (23) 0 9 (69) 0 0 0 0 1 (8) 0 0
E 33 5 (15) 10 (30) 6 (18) 0 0 2 (6) 6 (18) 0 4 (12) 0
F 20 3 (15) 11 (55) 2 (10) 0 0 0 3 (15) 0 1 (5) 0
H 6 1 (16) 3 (50) 0 0 0 1 (16) 1 (16) 0 0 0
J 37 14 (38) 7 (19) 7 (19) 0 2 (5) 2 (5) 1 (3) 2 (5) 2 (5) 0
K 24 6 (25) 7 (29) 0 0 0 0 8 (33)   3 (13) 0
M 11 0 0 0 7 (64) 0 2 (18) 0 0 2 (18) 0
O 19 7 (37) 0 0 0 0 1 (5) 4 (21) 3 (16) 4 (21) 0
Total 175 41 (25) 42 (24) 24 (14) 7 (4) 2 (1) 12 (7) 24 (14) 7 (4) 16 (9) 0
Total 285 77 (28) 61 (21) 53 (19) 7 (2) 6 (2) 16 (6) 26 (9) 9 (3) 26 (9) 4 (1)