Comparative Study Between the Sequencing of 16sRNA gene and Traditional Identification Methods of Some Bacterial Pathogens Associated with A Systemic Bacterial Infections from Diseased Poultry Flocks
Mona A. AbdelRahman, Karim Selim, Amany Adel.
Abstract
Poultry health problems of chickens are usually accompanied by bacterial systemic infections causing severe losses in flocks, sick birds were systemically could be infected by several bacteria regardless of the clinical signs. 16s RNA sequence is a modern approach for the diagnosis of bacterial infection, especially of multiple causative agents. Ten field cases suffering from systemic infections have been examined for bacterial causes, using conventional isolation and 16S rRNA sequencing, The ten sequenced samples were compatible with the results of isolation; six samples were similar to E.coli species with identity% = 97-99%, while it had similarity% < 96% with Salmonella enterica. While the other samples showed variable identity ranging from 94-99% with Salmonella enterica, E. coli, Enterobacter spp and Klebsiella spp
In conclusion, although conventional isolation is the golden standard method for bacterial diagnosis, however, the 16s RNA sequencing has elaborated excellence in diagnosis and identification of bacterial infection, concerning the time consuming, detection of multi-caused infections and sensitivity.
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