Abstract
Experiments were conducted to evaluate effect of disinfectant solutions sprayed repeatedly on reduction of viable bacteria contaminating on a chicken house. Three types of disinfectant solution, invert soap, iodophor and orthodichlorobenzene were used.
No significant effect on the reruction of bacteria was observed by spraying either 1 type of the solution repeatedly 2 or 3 times, or 2 or 3 different types of the solution successively. Reduction of bacteria per spraying was less than 1/10 of them contaminated before spraying. The reduction of bacteria by 2nd spraying was smaller than that by 1st spraying. It was observed that the reduction of bacteria per spraying was smaller when the solution was sprayed repeatedly.
