Examination of middle concentrations of oxytetracycline residues in cow milk after intrauterine application

After intrauterine application of oxytetracycline in a dose of 2.0 g per cow, excretion of residues in milk was monitored using Resasurine test with Str. thermophilus and specific quantitative procedure (Vukovic, 1999). Mean concentrations of oxytetracycline residues in milk samples, the total quantity per milking and the total quantity per cow were monitored.