The subject matter of the present invention is a strain of Arthrobacter gandavensis which has an activity against Clostridium perfringens, chosen from the strains AP1 deposited with the DSMZ on 19 February 2014 under number DSM 28444, AP2 deposited with the DSMZ on 19 February 2014 under number DSM 28445, AP3 deposited with the DSMZ on 19 February 2014 under number DSM 28446 or AP4 deposited with the DSMZ on 19 February 2014 under number DSM 28447.