Bacteriological study and liver abscesses prevalence in Sheep referred to Semnan abattoir

Document Type : Original Article

Authors

1 Graduated from the Faculty of Veterinary Medicine, University of Semnan, Semnan, Iran

2 Department of Clinical science, Semnan University, Semnan, Iran

3 Department of Pathobiology, Faculty of Veterinary Medicine, University of Semnan, Semnan, Iran

Abstract

Liver abscesses cause great economic losses to the livestock industry due to the removal of infected livers, reduced productivity of animals and carcasses. The purpose of this study was to determine the incidence and bacteriological study of hepatic abscesses in sheep in Semnan slaughterhouse to have appropriate statistics to know the prevalence and the importance of preventive measures and treatment of these factors. Examination of 847 sheep carcasses revealed 31 abscesses, of which 8 were male and 23 were female. 6 pathogens were isolated from abscesses as follows: 6 cases of Escherichia coli (1 pure and 5 mixed), 1 case of Klebsiella pneumoniae (mixed) 19 cases of Corynebacterium pseudotuberculosis (14 Pure and 5 mixed), 6 cases of Trueperella pyogenes (3 pure and 3 mixed) and 4 cases of Staphylococcus aureus (3 pure and 1 mixed), 3 cases of Fusobacterium necroforum (2 Pure,1 mixed) were isolated from abscesses. The results of this study showed that the prevalence of liver abscess in Semnan is 3.6%. Corynebacterium pseudotuberculosis with a frequency of 48.71% is the most important bacterial agent in liver abscess in Semnan sheep.Other causes of Escherichia coli abscess (15.58%), Trueperella pyogenes (15.38%), Staphylococcus aureus (10.25%), Fusobacterium necroforum (7.69%), Klebsiella pneumoniae (2.56%).
 

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Journal of Veterinary Laboratory Research
Volume 16, Issue 2 - Serial Number 26
In Progress
February 2025
Pages 95-100

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