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Salmonella is widespread in nature and can be found in all links of the poultry production chain. Due to its high impact on meat processing, techniques for the rapid detection and reproducible characterization of Salmonella serotypes in foods are needed. The present study investigated the potential of molecular profiling to identify and differentiate 15 Salmonella serotypes isolated from the poultry production chain, based on 5 primers by random amplified polymorphic DNA (RAPD), enterobacterial repetitive intergenic consensus (ERIC-PCR), amplification of rDNA internal spacer analysis (RISA), and amplified ribosomal DNA restriction analysis (ARDRA) of 16S-23S rRNA internal spacer region (ISR) cleaved with Alu I and Hha I restriction enzymes. Three isolates of each serotype were analyzed for the identification of similar and different profiles. Dendrograms were constructed from molecular profiles using the UPGMA method (unweighted pair-group method for the arithmetic averages) and the software program WinBoot. The present study indicates the usefulness of RISA and ARDRA of the 16S-23S rRNA intergenic spacer region (ISR) for systematic, epidemiological, and diagnostic purposes. Since these techniques can be used for the differentiation of serotypes, they are highly promising for the characterization of Salmonella serotypes and intra-serotypes. Data indicate that these techniques may be used to produce more consistent, reliable, and reproducible results in the identification and epidemiological study (traceability) of Salmonella in the poultry industry

brazilian journal of poultry science

Potential use of molecular-typing methods for the identification and characterization of salmonella enterica serotypes isolated in the poultry production chain