Occurrence, drug resistance, and virulence genes of Salmonella isolated from chicken and eggs

Publication date: Available online 13 February 2020Source: Food ControlAuthor(s): Dan Hai, Xingpeng Yin, Zhaoxin Lu, Fengxia Lv, Haizhen Zhao, Xiaomei BieAbstractSalmonella is considered one of the most important foodborne pathogens and is commonly associated with the consumption of eggs, chicken meat, chicken intestines and other animal products. Multidrug resistant (MDR) Salmonella strains are highly adaptive and have been responsible for several foodborne disease outbreaks. We investigated the genetic relatedness, antibiotic resistance and virulence genes of 160 strains which were recovered from 920 samples. The samples were collected from the chicken intestines and eggs in their environment, in the wet markets and chicken farm in Jiang Su province of China. Of the total 920 samples analysed, 160 (17.4%) were positive for Salmonella. 61 (61/440) strains were detected in egg samples and 99 (99/480) strains detected in chicken intestines samples. The detection rates of Salmonella were different in different months and at different sampling sites. The resistance of 160 Salmonella strains to 16 antibiotics was detected by the agar disk diffusion method. The isolates from chicken intestines and eggs were more resistant to sulfamethoxazole (SMZ), ceftriaxone (CRO), nalidixic acid (NAL), cefazolin (CFZ), and amoxicillin (AMX). In addition, the strains isolated from eggs were relatively resistant to gentamicin (GEN) and kanamycin (KAN), while the strains isolated from chicken inte...
Source: Food Control - Category: Food Science Source Type: research