Table 1.
Antimicrobials used and animal defined dose for a feedlot animal (ADDFeedlot) equivalenta
| Antimicrobials used in study (Concentration) | Dose equivalent | ADDFeedlot |
|---|---|---|
| Ceftiofur 50 mg/mL, IM (Excenel sterile powder; Pharmacia Animal Health, Orangeville, Ontario) | 1 mg/kg BW | 1 |
| Florfenicol 300 mg/mL, SQ (Nuflor; Schering-Plough Animal Health, Pointe Claire, Quebec) | 40 mg/kg BW | 4 |
| Penicillin G procaine 300 mg/mL,b IM (Depocillin; Intervet Canada, Whitby, Ontario) | 33 mg/kg BW | 1.6 |
| Penicillin G procaine 300 mg/mL, IM (Ethacilin; Rogar/STB, London, Ontario) | 33 mg/kg BW | 1.6 |
| Sulfamethazine 15 g/bolus, orally (Sulfamethazine bolus, Professional Veterinary Laboratories, Winnipeg, Manitoba) | 1 bolus/80 kg BW | 1 |
| Tilmicosin 300 mg/mL, SQ (Micotil, Provel; Guelph, Ontario) | 10 mg/kg BW | 3 |
| Trimethoprim 40 mg/mL/Sulfadoxine 200 mg/mL, IM (Trivetrin injection; Schering-Plough Animal Health) | 16 mg/kg BW | 1 |
BW — body weight.
a
ADDFeedlot — Animal defined dose for a feedlot animal was used to quantify the number of actual individual antimicrobial treatments given at the approved dose of the antimicrobial. This does not include feed antimicrobials or routine metaphylaxis. This measurement accounted for the dosage and duration of action of the antimicrobial.
b
No longer available in Canada.