TABLE 2.
Comparison of M. haemolytica counts determined by nasal swab culturing between dairy calves that received intranasal inoculation of either bacterial therapeutics and M. haemolytica or only M. haemolytica
| Independent variable and levela | Estimated mean bacterial count (natural log CFU/nasal swab) (SE) | P value |
|---|---|---|
| Treatment | ||
| Mh (n = 12) | Reference | |
| BT + Mh (n = 12) | −3.31 (1.36) | 0.024 |
| Day of sampling | −0.25 (0.08) | 0.003 |
| Treatment × time interaction | 0.26 (0.11) | 0.025 |
| Replicate no. | 2.38 (0.84) | 0.010 |
a
Intercept = 7.93 ± 1.049 (P < 0.001). Random effect = calf number (n = 24).