Study on the quantitative assessment of Staphylococcus aureus in the broiler chicken slaughtering line

Objective To analyze the risk and key prevention and control points of Staphylococcus aureus in a large broiler slaughterhouse and to provide guidance for the scientific prevention and control of Staphylococcus aureus contamination in broiler slaughter. Methods Combining the monitoring data and investigation data of Staphylococcus aureus contamination in a large broiler chicken slaughterhouse, a quantitative assessment model was constructed using @ RISK 7 software, and a quantitative assessment was conducted on the four stages of chicken slaughter (depilation, cleaning chamber, pre-cooling and segmentation). Results Our research determined the predictive growth and decline pattern of Staphylococcus aureus in slaughtering process. It showed that the pre-cooling and segmentation and transmission links were the main risk contributor links of Staphylococcus aureus contamination. The critical risk control points of Staphylococcus aureus in broiler slaughtering were the concentration of Staphylococcus aureus in precooled pool water and hand-borne Staphylococcus aureus in workers with the correlation coefficient of 0.62 and 0.50, respectively. Conclusion The identification of key control points and precise control measures of Staphylococcus aureus in broiler slaughtering can effectively guarantee the health and safety of terminal chicken products

The complete chloroplast genome sequence of Sauropus spatulifolius Beille

Sauropus spatulifolius Beille is one kind of Chinese herbal medicine with anti-inflammatory and analgesic activities. In this study, we reported the complete chloroplast genome of S. spatulifolius Beille, and assembled and annotated with high-throughput sequencing data, which would provide help for its taxonomy research. The chloroplast sequence was 154,707 bp , with two of 87,438 bp and 19,427 bp single-copy regions, which were separated by two inverted repeat regions with 23,921 bp . A total of 129 genes were predicted, with GC content of 36.61%. Phylogenetic analysis showed that S. spatulifolius Beille closest to Glochidion chodoense in Malpighiales