Duphacycline LA Dosage and administration By deep intramuscular injection, 20 mg/kg bodyweight. Cattle, sheep and pigs 5 ml per 50 kg (Not more than 20 ml for cattle, 10 ml for pigs and 5 ml for sheep should be given in any one site) Piglets 1 day 0.2 ml 7 days 0.3 ml 14 days 0.4 ml 21 days 0.5 ml over 21 days 1.0 ml/10 kg