Professor Ni Xueqin, director of the Animal Microecology Research Center of Sichuan Agricultural University, who focuses on the study of avian clostridial enteritis, adheres to the core theory of "treating bacteria with bacteria" by his predecessor (Professor He Mingqing, the founder of my country's animal microecology discipline), and starts from the health of the affected chickens. A strain of anti-clostridial origin isolated from the ileum of chickens.