[Amoxicillin resorption and retention in calves and pigs treated with Amopen powder]

Determined were the serum concentrations of amoxicillin at the single and repeated oral administration to calves and pigs of the drug formula amopen-powder, containing 5 per cent amoxicillin tryhydrate. It was found that the resorption of the antibiotic was rapidly setting in, and there were high concentrations in the blood serum of the treated animals, in pigs both the resorption and the elimination of amoxicillin occurring at a higher rate. In calves with developed forestomach the antibiotic was resorbed twice slower than in sucking calves. In pigs the increase in feed with which the drug was offered resulted in its weaker resorption in the digestive tract.