Table 4 Associations between somatic cell counts (SCC x1000/ml) and intramammary infection (IMI) in udder quarter milk samples taken from beef cows within a month after calving and at weaning in 10 beef cow herds
From: Udder health in beef cows and its association with calf growth
Bacterial findings | After calving | At weaning | ||||
|---|---|---|---|---|---|---|
Median SCC (50% central range) | n | P-value | Median SCC (50% central range) | n | P-value | |
IMI | ||||||
No | 48 (22–104) | 314 | 44 (13–188) | 295 | ||
Yes | 346 (75–1113) | 50 | <0.0001 | 303 (58–1041) | 56 | <0.0001 |
IMI, not CNSa | ||||||
No | 48 (22–104) | 312 | 44 (13–188) | 295 | ||
Yes | 820 (185–2605) | 24 | <0.0001 | 370 (75–1946) | 29 | <0.0001 |
IMI | ||||||
No | 48 (22–104) | 314 | 44 (13–188) | 295 | ||
CNSa | 106 (66–425) | 26 | 218 (30–802) | 27 | ||
S. aureus | 820 (185–2487) | 20 | 419 (97–2318) | 21 | ||
Other | 1782 (353–3208) | 4 | <0.0001b | 239 (37–677) | 8 | <0.0001c |