Senthilkumar, K.Selvaraj, P.Vairamuthu, S.Shammi, MalaKathiresan, D.TANUVAS2018-03-312018-03-312010-05http://krishikosh.egranth.ac.in/handle/1/5810042777Gram positive bacteria -30%, Gram negative -43% bacteria ,both Gram positive and negative bacteria 20% and fungus-7% were isolated from otitis externa. Pseudomonas aeruginosa was predominantly isolated in chronic otitic externa. Gram positive bacteria isolated (23) were found to be sensitive to amikacin ( 61%), amoxycillin clauvunic acid (52%), ciprofloxacin (57%), and amoxycillin (17%). Gram negative bacteria isolated (38) were found to be sensitive to amikacin (63%) followed by ciprofloxacin (47%) cephotaxime (34%) and cephalexin (13%).en-USVeterinary ScienceArticle