Settling plate method was used for detection of the different types of the microganisms on the dust particles dispersed in the environ ment of five farm buildings.
The bacteriological examination of specimens revealed the isolation of Staphylococcus aureus; Staphylococcus epidermidis, Streptococcus faecalis, E. coli, Klebsiella pneumonia, Proteus species and Pseudomo-- nas spp.
The mycological investigation of the samples recovered the isolation of Aspergillus fumigatus, A. niger, A. flavus, A. candidus, Penicillium citrinum, P. verrecosum, P. capsulatum, Mucor spp., Cladosporum spp., Alternaria spp. and Fusarium spp.
The higher incidence of microorganisms detected was more frequently obtained at level 30 cm. than the other two levels (100 and 150cm.).