Table 7.
Average and range of Dice similarity coefficients between 51 Mycoplasma bovis isolates collected from calves in a Saskatchewan feedlot by treatment, study year, and site of collection. Cattle were allocated to receive oxytetracycline metaphylaxis on arrival at the feedlot (META) or no antimicrobials (NO-META) on arrival and by first BRD treatment of two 20 mg/kg body weight (BW) IM doses of florfenicol administered 48 h apart (HOLD) or a single 40 mg/kg BW SQ dose of florfenicol on first diagnosis (HOME)
| Year | Site | N | Average similarity | Min | Max |
|---|---|---|---|---|---|
| 2007 | Joint | 2 | 76 | ||
| 2007 | Lung | 9 | 65 | 48 | 98 |
| 2007 | Nasal | 17 | 89 | 59 | 100 |
| 2008 | Lung | 7 | 94 | 92 | 96 |
| 2008 | Nasal | 16 | 81 | 49 | 100 |
| Treatment | |||||
| 2007 | META-HOLD | 9 | 84 | 59 | 100 |
| META-HOME | 9 | 81 | 67 | 95 | |
| NO-META-HOLD | 8 | 92 | 83 | 100 | |
| NO-META-HOME | 2 | 96 | |||
| 2008 | META-HOLD | 5 | 83 | 61 | 97 |
| META-HOME | 6 | 77 | 54 | 98 | |
| NO-META-HOLD | 9 | 85 | 49 | 100 | |
| NO-META-HOME | 3 | 96 | 93 | 97 | |
| Both years | META-HOLD | 14 | 81 | 56 | 100 |
| META-HOME | 15 | 75 | 47 | 98 | |
| NO-META-HOLD | 17 | 86 | 49 | 100 | |
| NO-META-HOME | 5 | 92 | 85 | 97 |
N — total number; Min — minimum; Max — maximum.