TABLE 7.
Detection of LD50 in mice
| Strains | Groups | Concentration (CFU/ml) | Number of mice | Inoculation method | Inoculation dose | Deaths number | LD50 (CFU/ml) |
|---|---|---|---|---|---|---|---|
| S. dysgalactiae CVCC3701 | 4‐LD100 | 1.0 × 109 | 8 | Intraperitoneal injection | 0.5 ml | 8 | 5.45 × 106 |
| 4‐A | 1.4 × 108 | 8 | 7 | ||||
| 4‐B | 1.98 × 107 | 8 | 3 | ||||
| 4‐C | 2.8 × 106 | 8 | 1 | ||||
| 4‐LD0 | 4.0 × 105 | 8 | 0 | ||||
| S. dysgalactiae CVCC3701‐ PEN (penicillin) | 5‐LD100 | 1.4 × 1010 | 8 | Intraperitoneal injection | 0.5 ml | 8 | 5.82 × 108 |
| 5‐A | 4.4 × 109 | 8 | 7 | ||||
| 5‐B | 1.1 × 109 | 8 | 6 | ||||
| 5‐C | 4.4 × 108 | 8 | 3 | ||||
| 5‐LD0 | 1.4 × 108 | 8 | 0 |