The object of the present invention is about Arthrobacter gandavensis strain having an activity against Clostridium perfringens selected from strains AP1 deposited with DSMZ on February 19, 2014 under the number DSM 28444, AP2 deposited with DSMZ on February 19, 2014 under the number DSM 28445, AP3 deposited with DSMZ on February 19, 2014 under the number DSM 28446 or AP4 deposited with DSMZ on February 19, 2014 under the number DSM 28447.本發明之主體係關於對產氣莢膜芽胞梭菌(Clostridium perfringens)具有抗活性的根特節桿菌菌株,其選自:於2014年2月19日以編號DSM 28444寄存於DSMZ的菌株AP1、於2014年2月19日以編號DSM 28445寄存於DSMZ的AP2、於2014年2月19日以編號DSM 28446寄存於DSMZ的AP3、或於2014年2月19日以編號DSM 28447寄存於DSMZ的AP4。