Table 10.
Comparing the number of antimicrobial classes to which the target organisms were resistant at Feedlot A and Feedlot B using the two sample Wilcoxon rank-sum test.
| Number of isolates of each pathogen by the number antimicrobial classes to which they are resistant |
Two sample Wilcoxon rank-sum test | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feedlot A | Feedlot B | ||||||||||||||||
| Number of classes | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | p-Value |
| Mannheimia haemolytica | 0 | 4 | 8 | 3 | 1 | 6 | 0 | 1 | 0 | 0 | 4 | 4 | 24 | 33 | 8 | 0 | 0.0002 |
| Mycoplasma bovis | 0 | 1 | 2 | 2 | 6 | 21 | 2 | 5 | 0 | 0 | 0 | 8 | 26 | 25 | 22 | 2 | 0.810 |
| Pasteurella multocida | 0 | 0 | 0 | 4 | 3 | 9 | 1 | 0 | 0 | 0 | 0 | 2 | 9 | 4 | 24 | 1 | 0.0015 |
| Histophilus somni | 0 | 3 | 4 | 4 | 1 | 1 | 2 | 1 | 1 | 2 | 7 | 5 | 6 | 2 | 1 | 0 | 0.978 |
| Trueperella pyogenes | 0 | 0 | 0 | 1 | 2 | 7 | 6 | 2 | 0 | 0 | 1 | 4 | 3 | 7 | 8 | 4 | 0.675 |