The present invention relates to a novel bacteriophage SH9 having saliva specific to salmonella, particularly Salmonella Hadar, a pharmaceutical composition for preventing or treating infectious diseases caused by Salmonella including the bacteriophage, antibiotic composition, feed additive The present invention relates to a method for preventing or treating an infectious disease caused by Salmonella comprising the step of administering a composition, a feed, a disinfectant or a detergent, and the bacteriophage to an individual. The method for preventing or treating infectious diseases caused by Salmonella using the bacteriophage SH9 of the present invention is highly specific to Salmonella than the conventional chemicals such as antibiotics, and the bacteriophage SH9 is infected with Salmonella, It has an advantage that it is strong against the physicochemical stimulus with excellent lytic activity by proliferating more than 100 times. In addition, the bacteriophage SH9 of the present invention is not infected with any host other than bacteria such as human, animal, and plant. Therefore, it is possible to solve the problems of antibiotic resistant bacteria caused by misuse of antibiotics, have. Therefore, the bacteriophage SH9 of the present invention can be variously used in the field of preventing or treating infectious diseases caused by Salmonella, especially Salmonella, antibiotic composition, composition for feed addition, feed, disinfectant, or detergent.
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