Isolation and Characterization of Escherichia coli in of Bau and Dom Ducks at Dai Xuyen Duck Breeding and Research Center

Abstract

       The aim of the present study was to isolate and characterize Escherichia coli (E. coli) from Bau and Dom conservation ducks at Dai Xuyen duck breeding and research center. The results showed that ages and breeds of ducks affected isolation rates. The breed differences in composition of serotypes O were observed. Two common serotypes O2 and O78 were not detected in this study. The bacterial isolates were resistant to β-lactam, aminoglycoside, and diaminopyrimidine antibiotics. Especially, all of the isolates were resistant to lincomycin. Most of the isolates showed toxicity in Swiss albino mice. This is the first study on E. coli in Bau and Dom duck breeds. The results can be considered as groundwork for further studies on E. coli and other microorganisms infecting conservation breeding flocks.