Cattle | Finishers
1
Virginiamycin use for growth promotion (in mineral mix: 0.94 mg/kg/day throughout feedlot period) vs no virg. use. Extracted from exit from feedlot timepoint, Batch 2 (B2) animals only (18 mos old @ feedlot entry, exit 100 d later). Aggreg. Intermed+R
| Resistance | Microbe | Outcome | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ampicillin / | Escherichia coli |
|