Salmonella represents a significant risk to both public and animal health. Although Salmonella strains have not been isolated from cattle livestock, Salmonella phages have been successfully identified.
Materials and Methods:
Our study was conducted through (i) investigating the presence of Salmonella strains and Salmonella phages in three study areas, (ii) phenotypic screening by lytic profile (LP); (iii) selecting nine phages for sequencing; and (iv) genomic comparison to evaluate their relative diversity.
Results:
A total of 307 samples were analyzed, resulting in a total of 162 virus-like particles (VLPs) analyzed. The LP was performed to identify Salmonella strains susceptible to phage infection, including the most frequent serovars: Dublin, Enteritidis, and Javiana. From the VLPs, nine phages were selected for genomic comparison. These phages represent three morphotypes: siphoviruses, myoviruses, and podoviruses, originating from different geographic and productive sites.
Conclusions:
This study enhances the understanding of the presence and diversity of Salmonella phages in cattle livestock, even in the absence of Salmonella strains.
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