Septicemia in broiler: Several factors can cause dysbiosis and alter the tight junctions of the intestinal epithelium. This facilitates the passage of multiple bacteria and their toxins to the bloodstream which cause septicemia. A common sign in cases of septicemia in broilers is the accumulation of fibrin and exudate in the femoral head, and necrosis processes can also be observed at this level. Staphylococcus aureus and Escherichia coli are two agents commonly isolated, the first one is more frequently isolated in breeders and E. coli is usually isolated broilers, but we can find in some cases both microorganisms acting simultaneously.