Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 1 (2): 75 - 76
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FU Peer, MM Ansari*, IA Gani, MM Willayat
Sher-e-Kashmir University of Agricultural Sciences and Technology, Faculty of Veterinary Sciences and animal Husbandry
Shuhama, Alastaing, Srinagar-190006, J&K, India.
*Corresponding author: email:

A total number of 105 isolates of Escherichia coli were identified, characterized and serotyped out of one hundred twenty five samples collected from yolk sac material of healthy, sick and dead chicks in Kashmir Valley, India. The typable serotypes were 97 (92.40%), the untypable serotyopes were 5 (4.80%) and the rough serotypes were 3 (2.80%). Twenty eight different serotypes viz. O2, O8, O20, O21, O25, O26, O41, O45, O50, O51, O78, O87 , O88, O89, O95, O101, O103, O106, O109, O111, O123, O154, O159, O171, and UT were recorded. Serotypes O8 was predominant (17) followed by O154 (14), O41(13), O103 (5), O20 (5), O51 (5), O2 (4), O26 (4), O171(3), rough (3), O88 (3), O89 (2), O101 (2), O106(2), O109 (2), O159 (2), O111 (2), O78 (2), O78 (2), O87(2) and one each of O21, O45, O123, O50, O25 and O22. Drug sensitivity pattern indicated most of the serotypes of avian E. coli were sensitive to ciprofloxacin, norfloxacin, amikacin, pefloxacin and cloramphenicol, cephalexin has been found to be moderately effective whils maximum number of E. coli isolates showed resistance against cephalaxin, lincomycin, oxytetracycline, co-trimoxazole, amoxicillin and gentamycin Therefore, this disease problem can be checked by adopting judicious selection of suitable antibiotic based on antibiogram studies.

Key Words: Broiler chicks. Escherchia coli, characterization, serotyping, antibiotic sensitivity