Table 5.
Least square back transformed to SCC, estimated from main effects of a mixed model with ln-transformed somatic cell count (lnSCC) as outcome, and intramammary infection statusa and non-infectious factors as fixed effects. Based on 3125 samples from 451 Norwegian dairy goats in four herds
| Fixed effects | Least square means | 95% CI |
|---|---|---|
| (Intercept) | 217 | 181–260 |
| IMI-statusa | ||
| Negative | Reference | |
| Staphylococcus aureus | 1075 | 735–1556 |
| Staphylococcus epidermidis | 534 | 343–828 |
| Staphylococcus caprae | 327 | 235–450 |
| Staphylococcus warneri | 357 | 273–473 |
| Parity | ||
| First | Reference | |
| Second | 473 | 407–550 |
| Third | 1002 | 828–1212 |
| ≥Fourth | 871 | 742–1022 |
| Sampling periodb | ||
| Indoor spring (early lact) | Reference | |
| Pasture (mid lactation) | 788 | 728–854 |
| Fall (late lactation) | 652 | 601–713 |
bEarly lactation: less than 100 days in milk, mid lactation: 100–180 days in milk, late lactation: >180 days in milk