Resistogram typing of Salmonella serotypes of avian origin

The resistogram typing of the 65 Salmonella isolates of poultry and its env ironment has shown 36 different patterns. Among the various dyes and chemic als used organisms evinced a high rate of resistance to the chemicals such as 0.7% copper sulphate (81.54%) and 0.003% malachite green (78.46%) follow ed by 0.09% acriflavine (69.23%) and 0.0006% phenyl mercuric nitrate (67.69 %). The copper sulphate and malachite green have the least discriminating a bility in the differentiation of strains in resistogram typing. Among the d yes and chemicals used only 3 out of 65 isolates have shown resistance to 0 .7% 4-chloresorcinol.