Article info.

ABSTRACT

Received 01 Oct 2018
Revised 11 Apr 2019

Accepted 30 Jul 2019

The study was conducted to determine the antimicrobial resistance of Escherichia coli which causes edema disease in post-weaning pigs in Vinh Long province. The results showed that 150 out of 769 examined piglets were positive with E. coli causing edema disease (19.51%). Among the infected piglets, the mortality rate of the disease was 57.33% (86/150). The proportion of E. coli infection in weaned pigs was higher on 1-2 weeks post weaning (66.95%) compared to over twoweeks of post weaning (33.05%). The proportion of E. coli isolated from piglets at households was significantly higher than that at the farms (61.02% vs 38.98% respectively). The most common symptoms of E. coli infection in piglets were swollen eyelids (100%), followed by swollen head (83.90%), and convulsions (82.20%). Moreover, the lesions including fluid accumulation in abdominal cavity (97.67%), hemorrhage in mesentery (96.51%) and small intestines (96.51%) were frequently detected in infected piglets. Positive rate of gene encoding virulent factor Stx2e in post-weaning pigs was quite high (42.37%). E. coli strains were highly resistant to Ampicillin (92%) and Bactrim (77%), followed by Streptomycin (68%) and Gentamycin (50%). The 117/118 strains were multi-resistant to 2-7 antibiotics with 66 different diversified and complicated types.  E. coli was still sensitive to ceftazidime, cefuroxime, amikacin, and amoxicillin-clavulanic acid.

Keywords

Antimicrobial resistance, Escherichia coli, edema disease, piglet, Vinh Long

Cited as: Khai, L.T.L. and Lai, L.T.C., 2019. Antimicrobial resistance of Escherichia coli causing edema disease in post-weaning pigs in Vinh Long province. Can Tho University Journal of Science. 11(2): 1-8.