We describe an improved selective, differential, and cost-effective medium, XA medium, which contains d-arabinose, to facilitate the selective isolation of Salmonella spp. The sensitivity and the specificity of XA medium were compared to those of xylose lysine desoxycholate agar (XLD) using stock cultures and naturally contaminated food samples. XA medium and XLD were evaluated with a total of ...

Salmonella remains a threat to both animal and public health. Its economic significance remains high and changes in public perception mean that some measures for control may be necessary even in the absence of financial loss. Diagnosis is an important part of control. A great deal of new information has become available over the last few years as a result of research into various aspects of bot...

The nucleotide sequence of the citC coding for the citrate carrier in several Salmonella serovars has been determined, and the amino acid sequence of the carrier protein was deduced. The predicted citrate carrier from Salmonella pullorum and Salmonella enteritidis consists of 446 amino acids with a molecular weight of 47,621, whereas that from Salmonella dublin is the same 446 amino acids with ...

Multidrug resistance is a global public health problem. In 2017, in Mexico, Salmonella caused 192,771 foodborne zoonosis cases. Sonora, Hidalgo, Mexico State and Jalisco have reports of multi-resistant strains chicken beef carcasses slaughterhouses; however, the prevalence livestock herds unknown. From January 2012 to October 2013, 144 diarrheal stool samples were collected from bovine hatchlin...

The present study was to investigate the incidence of Helicobacter pullorum in caecum and colon of 96 broiler chickens. All samples were obtained from different commercial broiler slaughtering facilities in Marmara region of Turkey. The presence of H. pullorum was assessed by conventional culture method and specific polymerase chain reaction (PCR) test. H. pullorum were not isolated from any of...

Salmonella enteritidis is highly virulent for the mouse causing an infection resembling mouse typhoid. Survivors of the infection are completely resistant to reinfection and eliminate a large challenge dose of virulent organisms within 72 hr. The antigenically related Salmonella gallinarum was almost avirulent for the mouse but animals vaccinated with this organism were equally capable of elimi...