Size distribution of airborne particles in animal houses

The objective of this study was to determine concentration and size distribution of airborne particles inside and outside animal houses for broilers, broiler breeder (with bedding); layers (floor or aviary housing system); turkeys (with bedding), pigs: fatteners (traditional house, low emission houses (dry feed, or wet feed), piglets, sows (individual or group housing); cattle (cubicle house), and mink (cages). Dust concentrations, both in counts and mass, in the different particle size ranges were highest in poultry houses. The concentrations in pig houses were higher than those in cattle and mink houses. The count particle size ranges <1.0 µm was highest with average of 95%, while mass particle was highest in size ranges > 2.5 µm (on average 95%). Most count particles outside were in the size range <1.0 µm (99%). Keywords: Particle size distribution, animal houses, dust concentration