Lowrance, T. Courtney; Loneragan, Guy H.; Kunze, David J.; Platt, Tammy M.; Ives, Samuel E.; Scott, H. Morgan; Norby, Bo; Vet, Cand Med; Echeverry, Alejandro; Brashears, Mindy M. (United States of America)
American Journal of Veterinary Research (2007)
A cohort study was conducted. Steers were housed in pens (5 pens with 10 steers and 1 pen with 11 steers). Five steers in each pen were administered CCFA, and 5 served as control steers (1 pen had 6 control steers). The CCFA administration included a single-dose regimen (6.6 mg/kg, SC, on day 0), two-thirds–dose regimen (4.4 mg/kg, SC, on day 0), and 3-dose regimen (6.6 mg/kg, SC, on days 0, 6, and 13)
Fecal samples were collected on days 0, 2, 6, 9, 13, 16, 20, and 28. Fecal samples were collected immediately before CCFA administration
AST Method: Broth Microdilution
Reference explicitly reports AST breakpoints: False
Reference reports using a MIC table: True
Is Excluded: False
| Country | Sub-Region | Sub-Region Detail |
|---|---|---|
| United States of America | None | None |
| ID | Note | Resolution |
|---|
| Title | Host | Host | Production Stage | Description | ROs |
|---|---|---|---|---|---|
| administered CCFA | Cattle | None | Farm | administered CCFA as a single-dose regimen (6.6 mg/kg, SC, on day 0) | 3 |
| CCFA 1 Dose Regimen | Cattle | Finishers | Farm | Ceftiofur crystalline-free acid (CCFA) administered as a single dose (6.6 mg/kg, SC). | 15 |
| CCFA 2/3 Dose Regimen | Cattle | Finishers | Farm | Ceftiofur crystalline-free acid (CCFA) administered as a two-thirds dose regimen (4.4 mg/kg, SC). | 15 |
| CCFA 3 Dose Regimen | Cattle | Finishers | Farm | Ceftiofur crystalline-free acid (CCFA) administered as a 3-dose regimen (6.6 mg/kg, SC, Day 0, 6, 13). | 15 |