Abstract
Studies were made on tissue levels of ampicillin(Amp)in cultured yellowtail, Seriola quinqueradiata which were given 40 mg of Amp per kilogram of body weight. The fish were fed the drug-containing food once a day for successive 5 days prior to the drug analysis. The water temperature was 23.2 to 25.4°C, average 24.2°C, during the course of experiment.
The highest tissue level of Amp was obtained 1 hour after medication in liver and 3 hours in kidney. The highest level of Amp was found in liver and the lowest level was in muscle.The levels of Amp in those tissue became almost undetectable after 48 hours.
