The present invention is a novel bacteriophage SE131 having a specific killing ability to Salmonella, in particular Salmonella Enteritidis and Salmonella Gallinarum ( Salmonella Gallinarum), for the prevention or treatment of infectious diseases caused by Salmonella including the bacteriophage A pharmaceutical composition, an antibiotic composition, a feed additive composition, a feed, a disinfectant or a cleaning agent, and a method for preventing or treating an infectious disease caused by Salmonella, comprising administering the bacteriophage to a subject. The method for preventing or treating an infectious disease caused by Salmonella using bacteriophage SE131 of the present invention has a very high specificity against Salmonella , in particular Salmonella Enteritidis, compared with conventional antibiotics and the like, and the bacteriophage SE131 Has the advantage of showing excellent lytic activity and being resistant to physicochemical stimulation by infection with Salmonella. In addition, the bacteriophage SE131 of the present invention is not infected with a host other than bacteria such as humans, animals, plants, and the like, which can solve problems of antibiotic resistant bacteria due to misuse of antibiotics, residues of antibiotics in food, and a wide range of host problems. have. Accordingly, the bacteriophage SE131 of the present invention can be used in various fields in the prevention or treatment of infectious diseases caused by Salmonella, antibiotic compositions, feed additive compositions, feed, disinfectants, or detergents.본 발명은 살모넬라균, 특히 살모넬라 엔테리티디스(Salmonella Enteritidis) 및 살모넬라 갈리나룸(Salmonella Gallinarum)에 특이적인 사멸능을 갖는 신규 박테리오파지 SE131, 상기 박테리오파지를 포함하는 살모넬라균에 의한 감염성 질병의 예방 또는 치료용 약학적 조성물, 항생용 조성물, 사료 첨가용 조성물, 사료, 소독제 또는 세척제 및 상기 박테리오파지를 개체에 투여하는 단계를 포함하는 살모넬라균에 의한 감염성 질병의 예방 또는 치료 방법에 관한 것이다. 본 발명의 박테리오파지 SE131을 이용한 살모넬라균에 의한 감염성 질병의 예방 또는 치료 방법은 기존의 항생제 등의 화학물질에 비해 살모넬라균, 특히 살모넬라 엔테리티디스(Salmonella Enteritidis)에 대한 특이성이 매우 높고, 상기 박테리오파지
