Table 2.
Least square means (±SE) for total milk leukocyte counts, milk leukocyte proportions, and milk leukocyte ratios by group of mastitis-causing pathogen (n = 99 quarters)
| Parameter | NOG | GN | GP | OTH | Group P value | GP vs. GN |
|---|---|---|---|---|---|---|
| P value | ||||||
| TLC (cells × 1000/mL) | 263 ± 11.2 | 39,174 ± 1,245 | 1,290 ± 110 | 2,585 ± 481 | <0.001 | 0.16 |
| NEU (%) | 55.4 ± 0.05 | 52.7 ± 1.02 | 66.9 ± 0.05 | 69.0 ± 0.42 | 0.001 | 0.16 |
| LYM (%) | 16.5 ± 0.11 | 6.54 ± 2.18 | 13.4 ± 0.01 | 11.6 ± 0.08 | <0.001 | 0.01 |
| MAC (%) | 26.9 ± 0.08 | 35.5 ± 1.85 | 18.3 ± 0.77 | 17.7 ± 0.62 | 0.03 | 0.12 |
| NEU:LYM ratio | 3.68 ± 0.28 | 7.16 ± 1.25 | 5.16 ± 0.28 | 6.08 ± 0.80 | <0.001 | 0.12 |
| NEU:MAC ratio | 3.57 ± 0.66 | 6.86 ± 2.95 | 4.97 ± 0.66 | 7.68 ± 1.88 | 0.11 | 0.53 |
| PHAG:LYM ratio | 5.79 ± 0.59 | 23.6 ± 2.64 | 7.40 ± 0.59 | 7.93 ± 1.68 | <0.001 | <0.001 |