Table 1.
Milk leukocyte proportions (mean ± SE) and milk leukocyte ratios by quarter position (front vs. rear) in healthy (TLC ≤ 100,000) and affected quarters (n = 411 quarters)
| Parameter | Front quarters | Rear quarters | P value |
|---|---|---|---|
| TLC ≤100,000 (n = 151) | |||
| NEU (%) | 51.4 ± 0.02 | 52.5 ± 0.02 | 0.50 |
| LYM (%) | 17.4 ± 0.02 | 19.1 ± 0.02 | 0.21 |
| MAC (%) | 30.1 ± 0.04 | 26.7 ± 0.03 | 0.11 |
| NEU:LYM ratio | 3.47 ± 0.28 | 3.48 ± 0.27 | 0.99 |
| NEU:MAC ratio | 1.84 ± 0.25 | 2.64 ± 0.24 | 0.01 |
| PHAG:LYM ratio | 5.78 ± 0.48 | 5.58 ± 0.46 | 0.75 |
| TLC >100,000 (n = 260) | |||
| NEU (%) | 58.4 ± 0.017 | 62.4 ± 0.02 | 0.03 |
| LYM (%) | 14.6 ± 0.005 | 14.6 ± 0.01 | 0.99 |
| MAC (%) | 25.0 ± 0.02 | 21.5 ± 0.03 | 0.06 |
| NEU:LYM ratio | 4.50 ± 0.17 | 4.62 ± 0.18 | 0.61 |
| NEU:MAC ratio | 4.31 ± 0.35 | 4.50 ± 0.35 | 0.71 |
| PHAG:LYM ratio | 7.12 ± 0.33 | 6.59 ± 0.34 | 0.26 |