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OJVRTM
Online Journal of Veterinary Research©
Volume 17 (12):675-684, 2013. Extensively Redacted 2017.


Molecular analysis of virulence factors of Pasteurella multocida from sheep and goats

 

Sameneh Daneshlari1, Yahya Tahamtan2*, Mohammad Kargar1

 

1Departments of Microbiology, Jahrom Branch, Islamic Azad University, Jahrom and 2Razi Vaccine and Serum Research Institute-Shiraz, Iran

 

ABSTRACT

 

Daneshlari S, Tahamtan Y, Kargar M., Molecular analysis of virulence factors of Pasteurella multocida from sheep and goats, Onl J Vet Res., 17 (12):675-684, 2013. Thirty one isolates of Pasteurella multocida from 500 cases of clinical respiratory disease in sheep and goats were subjected to PCR assay.  All isolates were serogroup A P. multocida except for 2 serogroup D.  P. multocida was the most frequent pathogenic isolate recovered. Isolates were characterized by 5 virulence factor genes. PCR showed that outer membrane proteins (omph) occurred in most small ruminant strains. Virulent factor genes pfhA, hgbA, and toxA, were present in 7% of strains and exhibited distinctive associations with serogroup A. However toxA VF was not found in serogroup D.  These could provide possible vaccine candidates against P. multocida serotypes.

 

Keywords” Pasteurella multocida, virulence, PCR, respiratory infections, Sheep, Goat


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