Ultra Sonic Sprayer Controlling Dust in Experimental Poultry Houses

Dust control tests of experimental enclosed layer and floor feeding broiler houses were performed with ultra sonic sprayer units which have some advantages such as 1) low cost, 2) low electric power consumption, 3) forcing the charge and 4) unnecessary to lay pipes to spray. With spraying 2 % solution of emulsified canola oil in layer house, the concentration of dust with aerodynamic diameter (d) of above 0.5 and less than 2 μm and that of 10 ≤ d < 30 μm significantly decreased 42 % and 49 %, respectively. The dosage was 14 g day head. In an enclosed floor feeding broiler house spraying 2 % solution of emulsified canola oil reduced the concentration of dust with 0.3 ≤ d < 5 μm significantly. Dust concentration was reduced to 40 %. However, the concentration was too high at the order of 10 particles m. For the floor feeding broiler house, spraying is not suitable method to reduce dust concentration.