Quorum sensing(QS)is a microbial cell-to-cell communication mechanism that plays a key regulatory role in bacterial virulence factor expression,bioluminescence,spore formation,and biofilm formation.In recent years,researchers have found that QS also exists in the gastro-intestinal tract of livestock and poultry.In view of the significant role of gastro-intestinal microflora in the digestion,physiological metabolisms,and immune functions of animals,research and regulation of gastro-intestinal bacterial QS is of great significance in guaranteeing health and improving production performance.In th...