Germicidal Activity and Chicken Toxicity of Chlorine Dioxide
摘要
The bactericidal, fungicidal and virucidal activity of chlorine dioxide (CIO2) against 79 bacteria, 31 yeasts and 4 viruses were evaluated under clean and dirty conditions. The safety of CIO2 to chickens given by drinking water or skin spraying was also evaluated. In clean diluent condition, the median lethal concentration (MLC50) of CIO2 against bacteria and yeast was 9.4 and 8.4 ppm, respectively. In dirty diluent condition, the MLC50 of CIO2 against bacteria and yeasts was 39.9 and 24.3 ppm, respectively. The virucidal activity of CIO2 against 100 median embryo lethal dose (100 ELD50) of Newcastle disease virus, avian influenza virus, infectious bronchitis virus and infectious bursal disease virus was 1.2, 1.2, 2.5 and 1.2 ppm, respectively. All the leghorn chickens continuously given with 10 mL of 500, 250, 125, 62.5 or 0 ppm of CIO2 in drinking water or on skin spraying for 7 days were not found showing any abnormality at 14 days post medication. Chlorine dioxide provides high bactericidal and virucidal activity without resulting any toxicity to the chickens.