A slaughterhouse and bacteriologic study on hepatic abscesses of slaughtered sheep in Urmia abattoir

Subject Areas : Veterinary Clinical Pathology

عبداله  Araghi – Sooreh ¹ (Department of Clinical Sciences, Faculty of Veterinary Medicine, Urmia Branch, Islamic Azad University, Urmia, Iran)
علی  Hassanpour ² (Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran)
امیر  Salimpour ³ (Graduate of Veterinary Medicine, Faculty of Veterinary Medicine, Urmia Branch, Islamic Azad University, Urmia, Iran)

Received: 2010-11-03 Accepted : 2011-05-05 Published : 2011-02-20

Keywords: Sheep, Urmia, slaughterhouse, Hepatic abscess, bacteriology,

Abstract :

Hepatic abscesses have a major economic impact on the stock-breeding industry because of liver condemnation and reduced animal performance and carcass yield. This research was aimed to determine occurrence and bacterial causes of hepatic abscesses of sheep slaughtered at Urmia abattoir.Post-mortem examination of 3260 sheep showed that 48 (1.47%) exhibited hepatic abscesses. Twenty six (1.99%) abscesses were found in females and 22(1.12%) abscesses were found in males. Most of the abscesses were found in the right lobes (45.8%) and in diaphragmatic surfaces (47.9%) of livers. According to presence of abscesses, there was significant difference between different liver surfaces (p<0.05). All abscesses were cultured for aerobic and anaerobic bacteria. Seventy one isolates from 6 genera were identified. The following bacteria were isolated: Fusobacterium necrophorum (14 in pure culture and 9 in mixed culture); Corynebacterium pseudotuberculosis (5 in pure culture and 14 in mixed culture); Arcanobacterium pyogenes (4 in pure culture and 10 in mixed culture); Escherichia coli (2 in pure culture and 5 in mixed culture); Pseudomonas aeruginosa (4 in mixed culture) and Staphylococcus spp. (4 in mixed culture). The results of this study showed that F.necrophorum is the most important bacterial cause of hepatic abscesses (49.7%) and C.pseudotuberculosis is the second important bacterial cause of hepatic abscesses (39.6%) in sheep in Urmia.

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