| A comparison of lytic activity of swine and chicken phages with Staphylococcus hyicus of swine, chicken and cattle origin |
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Cheong-Kyu Park, Han-Nae Jang, Young-Sam Kwon |
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College of Veterinary Medicine, Kyungpook National University |
| 돼지, 닭 및 소유래 Staphylococcus hyicus에 대한 swine phage와 chicken phage의 용균능 비교 |
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박청규, 장한내, 권영삼 |
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경북대학교 수의과대학 |
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| Abstract |
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The lytic activity of the set of swine and chicken phages which were derived from lysogenic Staphylococcus hyicus strains of swine and chicken origin was compared by means of S. hyicus isolated from swine, chicken and cattle. Of the 80 strains each from swine and chicken, 71 (88.8%) of strains from swine and all the strains of chicken origin were found to be lysogenic. Swine phages showed wider range of lytic activity to the examined strains than that of chicken phages. Using chicken phages at $100{ imes}routine$ test dilution (RTD), 25.0%, 85.6% and 50.0% of swine, chicken and bovine strains were lysed, respectively. However, when the set of swine phages was used at $100{ imes}RTD$, higher frequency of the typable strains was found in strains of swine and chicken origin (73.8% and 90.2%). Phage F12 and L16 from chicken set were found to be highly active with chicken and bovine strains. On the contrary, all the swine strains were completely resistant to lysis by the two phages at $100{ imes}RTD$. Thirteen (12.5%) of 104 S. aureus strains, 1 (1.8%) of 55 S. simudance strains, 31 (58.5%) of 53 S. chromo genes strains, and none of 31 strains of other coagulase-negative Staphylococcus species isolated from bovine mastitis were typable with the set of swine phages. |
| Key Words:
Staphylococcus hyicus, lysogeny, swine phages, chicken phages, lytic activity |
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