Received: 24-05-2016 / Accepted: 28-12-2016
The aim of the present study was to isolate and characterize Escherichia coli(E. coli) from Bau and Domconservation 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 bacterium bacterialisolates were resistaent 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. To the best of our knowledge, tThis is the first study on E. coliin Bau and Dom duck breeds. The results can be considered as groundwork ofor further studies on E. coliand other microorganisms infecting conservation breeding flocks.