Idedtification of bacterial agent isolated from liver abscesses of cows slaughterd at Urmia abbatoire

The purpose of this research was to determine frequency and bacterial agents of hepatic abscesses of cattle slaughtered at Urmia abattoir, Iran.Post-mortem examination of 2179 cattle showed that 36 (1.65%) exhibited liver abscesses. All abscesses were cultured for aerobic and anaerobic bacteria. Isolates were identified as follows: Arcanobacterium pyogenes, Fusobacterium necrophorum, Escherichia coli, Staphylococcus spp., Pseudomonas aeruginosa, Streptococcus spp. and Corynebacterium pseudotuberculosis. This study revealed that A. pyogenes is the most important isolate of liver abscesses (58.33%) and F. necrophorum is the second important isolate of liver abscesses (52.77%) in cattle of Urmia district. In the present study C. pseudotuberculosis is reported for the first time from bovine liver abscesses (5.55%).