%0 Journal Article %A DONG Pengcheng %A ZHANG Yimin %A MAO Yanwei %A LIANG Rongrong %A HAN Guangxing %A ZHU Lixian %A LUO Xin %T Molecular Typing of Salmonella Species Isolated from Beef Abattoirs by Pulsed-Field Gel Electrophoresis Analysis %D 2019 %R 10.7506/spkx1002-6630-20180709-129 %J FOOD SCIENCE %P 171-176 %V 40 %N 13 %X In order to investigate and specify the transmission and cross-contamination of Salmonella during bovine slaughtering, the source of strains isolated from six different processing points (hides, pre-evisceration carcasses, postevisceration, post-washing carcasses, chilled carcasses, meat and feces) was traced at the molecular level by pulsed-field gel electrophoresis (PFGE). The data showed a better insight into the distribution of Salmonella than serotyping. The similarity of 48 PFGE patterns ranged from 48.0% to 100.0% and 22 different profiles were identified from all these isolates at a similarity level of 95.7%. No highly similar pattern was found among different abattoirs. Serious and widespread crosscontamination from live animals’ hides and feces to carcasses was verified. Slaughtering plants should pay more attention to pre-slaughter management strategies to avoid cross-contamination problems and spraying intervention in dehided carcasses should be included as an extra critical control point to reduce the risk of Salmonella infection. %U https://www.spkx.net.cn/EN/10.7506/spkx1002-6630-20180709-129