TECHNOLOGY FOCUS - BIOLOGY - Preparation: No preparation method is given. Preferred Components: The bacteriophage has the morphology as depicted in figure 1, as given in the specification. The bacteriophage comprises at least one nucleic acid molecules comprising amino acid sequence of 3083 amino acid residues of SEQ ID NO: 1, amino acid sequence of 1670 amino acid residues of SEQ ID NO: 2 or amino acid sequence of 790 amino acid residues of SEQ ID NO. 3, as given in the specification, within the entire genome. In the bacteriophage, each PCR product has size of 1 kbp, upon performing PCR using at least one primer sets comprising: 23 bp of SEQ ID NO: 4 and 22 bp of SEQ ID NO: 5; 21 bp of SEQ ID NO: 6 and 20 bp of SEQ ID NO: 7; or 20 bp of SEQ ID NO: 8 and 22 bp of SEQ ID NO: 9, as given in the specification. The bacteriophage is identified by the accession number KCCM10976P. ACTIVITY - Antimicrobial; Antibacterial.    MECHANISM OF ACTION - None given.    ADMINISTRATION - Administration of the composition is oral, parenteral (e.g. intravenous, intraperitoneal, intramuscular subcutaneous or intra arterial), rectal, topical, transdermal, intranasal or inhalation route. No dosage details given.    EXAMPLE - Sample (50 ml) from chicken slaughterhouse and sewage effluent was transferred to a centrifuge tube, and centrifuged at 4000 rpm for 10 minutes. Then, the supernatant was filtered. 18 ml of sample filtrate was mixed with 150 mu l of glycerol-tolerant sodium taurine (ST) medium shaking culture medium and 2 ml of Luria-Bertani (LB) medium. The mixture was cultured at 37 degrees C for 18 hours, and the culture medium was centrifuged at 4000 rpm for 10 minutes. The supernatant was filtered using filter. 0.7 wt/vol.% Agar (3 ml) and ST shaking culture medium (150 mu l) were mixed, and plated onto LB plate, changed to a solid medium. 10 mu l of culture filtrate was spread on it, and cultured for 18 hours at 37 degrees C (0.7% agar was used as top-agar, and the titration of phage lysate was performed on the top-agar, called soft agar overlay method). The sample culture medium containing the phage lysate was diluted and mixed with 150 mu l of ST shaking culture medium, followed by soft agar overlay method, so that single plaques were obtained. Since a single plaque represents one bacteriophage, in order to isolate single bacteriophage, one plaque was added to 400 mu l of SM (phage suspension media) solution and left for 4 hours at room temperature to isolate single bacteriophage. To purify the bacteriophage in large quantities, 100 mu l of supernatant was taken from the single bacteriophage solution, and mixed with 12 ml of 0.7% agar and 500 mu l of ST shaking culture medium, followed by soft agar overlay method on LB plate. When lysis was completed, 15 ml of SM solution was added to the plate. The plate was gently shaken for 4 hours at room temperature to elute the bacteriophages from the top-agar. The SM solution containing the eluted bacteriophages was recovered, and chloroform was added to 1 % of a final volume and mixed well for 10 minutes. The solution was centrifuged at 4000 rpm for 10 minutes. The obtained supernatant was filtered and stored in the refrigerator. The selected bacteriophages were cultured in large quantities using ST medium. ST was shaking-cultured, and an aliquot of 1.5x 1010 cfu (colony forming unit) was centrifuged at 4000 rpm for 10 minutes, and the pellet was resuspended in 4 ml of SM solution. The bacteriophage of 7.5x 107 pfu (plaque forming unit) was inoculated to it and left at 37 degrees C for 20 minutes. The solution was inoculated into 150 ml of LB media, and cultured at 37 degrees C for 5 hours. Chloroform was added to 1% of a final volume, and the culture solution was shaken for 20 minutes. Deoxyribonuclease I (DNase I) and ribonuclease A (RNase A) were added to a final concentration of 1 mu g/ml, respectively. The solution was left at 37 degrees C for 30 minutes. Sodium chloride and polyethylene glycol were added to a final concentration of 1 M and 10% (w/v), respectively and left at 4 degrees C for additional 3 hours. The solution was centrifuged at 4 degrees C and 12000 rpm for 20 minutes to discard the supernatant. The pellet was resuspended in 5 ml of SM solution, and left at room temperature for 20 minutes. 4 ml of chloroform was added to it and mixed well, followed by centrifugation at 4 degrees C and 4000 rpm for 20 minutes. The supernatant was filtered using a filter, and the bacteriophage was purified by glycerol density gradient ultracentriftjgation. The purified bacteriophage was resuspended in 300 mu l of SM solution, followed by titration, thus the bacteriophage was isolated.