ABSTRACT
Farm animals are surrounded by external factors that directly influence the occurrence of multifactorial diseases. There are many risk factors from many very different spheres. One of these is the microclimate conditions in animal houses. The indoor air temperature of an uninsulated cattle building is directly related to the external temperature. There was a clear seasonal variation between summer and winter. Airborne dust is considered to be a potential risk factor for animal and human health, as the dust may penetrate into the alveoli through the respiratory tract. Particulate matter is formed in barns from many different sources, including feed, manure and bedding residues, sloughed off skin and hair cells, solid particles from exhaust fumes and the influence of outdoor particulate matter concentrations. Microclimates in uninsulated loose-housing cowsheds depend directly on the external climate. Due to excellent ventilation, gases' and particulate matter concentrations in the inside air of the uninsulated loose-housing cowsheds were low.
