Azithromycin

15–30 mg/kg/day, PO (discontinue if soft feces develop)

Ceftiofur

1 mg/kg/day, IM (for pneumonia)

Cephaloridine

12.5 mg/kg, IM, once to three times daily for 5–14 days

Chloramphenicol

30–50 mg/kg, PO, SC, or IM, twice a day

Ciprofloxacin

10–20 mg/kg, PO, twice a day

Doxycycline

2.5–5 mg/kg, PO, twice a day

Enrofloxacin

5–10 mg/kg, PO or IM, twice a day

Gentamicin

6 mg/kg/day, SC (use cautiously)

Metronidazole

10–40 mg/kg/day, PO

Trimethoprim-sulfamethoxazole

30–50 mg/kg, PO, twice a day