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Two experi ments were conducted to evaluate efficacy of spraying of disinfectant solution on reduction of viable bacteria contaminating on a test plate zinc sheet. The test plates were prepared to contaminate artificially with Staphylococcus aureus (Exp. 1) or naturally with chicken droppings (Exp. 2). In Exp. 1, each test plate was contaminated with 107.4-107.7 or 104.4-104.5 of S. aureus, respectively, and in Exp. 2, zinc sheet was contaminated with 105-105.4 or 102.9-103.6 per 1cm2. Four different kinds of disinfectant solution, invert soap, iodophor, dichloroisocyanate and orthodichlorobenzene were used. The solution was sprayed with small particle like as a mist on surface of the test plate.Reduction of viable bacteria after spraying of the solution was less than 1/10 of them before spraying. No notable difference observed on degree of disinfection between 4 kinds of disinfectant and between each of their high or low concentrations.
日本家禽学会の論文