Time pattern analysis of swimming activity and heart rate under the influence of chloramphenicol in carp ( Cyprinus carpio L.) and rainbow trout ( Salmo gairdneri R.)

Abstract

In industrial fish production there is little information available about the effect of antibiotics on the fish organism. The swimming activity of carp and trout before, during and after treatment with chloramphenicol was observed. Due to the daily rhythmical organization of body function and closely correlated periods of activity and rest, a treatment with chloramphenicol at different times of the day has different effects on swimming activity. A significant increase in heart rate after treatment with chloramphenicol was detected as compared to the controls. These results suggest that treatment with chloramphenicol should be given during the last feeding.