Paul, W. ManoharRajeswaran, M.Senthilkumar, R.Chandran, N. Daniel JoyTANUVAS2018-03-312018-03-312010-07http://krishikosh.egranth.ac.in/handle/1/5810042784With increased spread of multiresistance E.coli in man and animals microbiologist have sought various systems which distinguish new epidemic strains from endemic ones. Chemotherapy continues to be indispensable in the control of this disease. For chemotheraphy to be successful selection of proper antibiotics is essential.en-USVeterinary ScienceVeterinary MicrobiologyArticle