Study on Antibiotics Sensitivity of Salmonella pullorum

Abstract

The sensitivity of Salmonella pullorum against P., CTC., OTC, TC., CP., FM., SM., B., and LM., were measured, using the tube method and the plate method. Among strains used in this study, two strains belonged to standard type, three to intermediate type, and three to variant type. At the same time, the disk method was examined, comparing with these two methods, and the results with these three methods have been recognized to be similar.
It has clear from the results, that the organisms were highly sensitive against KM., FM., CP., TC. OTC., moderately sensitive against PC. and resistant against SM., B., CM. Strains of variant type and long-term culture were more sensitive to all kinds of antibiotics, especially to PC.,
The combined actions between KM., FM., CP., OTC., and PC., were investigated, using the tube and plate method. Comparing with the results by these methods, the cup plate technique, deviced by the auther to study synergism, summation, indifference and antagonism among all kinds of antibioties was investigated.
It has been certified, that the cup plate technique could be reliable, as the similar results were obtained from these three methods.
The combinations, as P.-CP., P.-KM., OTC.-CP., CTC.-KM., FM.-KM., were effectiive, while those, as CP.-FM., CP.-KM., not effective.