... use for poultry 3.100g,500g,1kg,. 4.oxytetracycline powder 20% WATER SOLUBLE POWDERComposition:Each gram powder contains: 200mg Oxytetracycline hydrochloride. ... Dosage and administration:For oral administration via the drinking water.Calves: 10-20 g per 200 kg bodyweight every 12 hours during 3 ... -5 days.Pigs: 1-2 g per litre drinking water during 3 ...