ILO Home
Go to the home page
Site map | Contact us Français | Español

CISDOC database

Document ID (ISN)112162
CIS number 11-0872
ISSN - Serial title 1545-9624 - Journal of Occupational and Environmental Hygiene
Year 2010
Convention or series no.
Author(s) Létourneau V., Nehmé B., Mériaux A., Massé D., Duchaine C.
Title Impact of production systems on swine confinement buildings bioaerosols
Bibliographic information Feb. 2010, Vol.7, No.2, p.94-102. Illus. 39 ref.
Internet access Impact_of_production.pdf [in English]
Abstract In this study, bioaerosols were characterized in 18 modern swine confinement buildings, and the differences in bioaerosol composition in the three different production systems were evaluated. Total dust, endotoxins, culturable actinomycetes, fungi, and bacteria were collected. The total DNA of the air samples was extracted, and quantitative polymerase chain reaction (PCR) was used to assess the total number of bacterial genomes as a total (culturable and non-culturable) bacterial assessment. The measured total dust and endotoxin concentrations were not statistically different in the three studied production systems. In buildings with sawdust beds, actinomycetes and moulds were found in higher concentrations than in the conventional barns. Aspergillus, Cladosporium, Penicillium and Scopulariopsis species were identified in all the studied swine confinement buildings. A. flavus, A. terreus and A. versicolor were abundantly present in the facilities with sawdust beds. Thermotolerant A. fumigatus and Mucor were usually found in all the buildings. The culturable bacteria concentrations were higher in the barns with litters than in the conventional buildings, while real-time PCR revealed non-statistically different concentrations of total bacteria in all the studied swine confinement buildings. In terms of workers' respiratory health, barns equipped with a solid/liquid separation system may offer better air quality than conventional buildings or barns with sawdust beds.
Descriptors (primary) swine; microorganisms; aerosols; work in confined spaces; livestock rearing
Descriptors (secondary) Canada; fungi; moulds; bacterial toxins; DNA; determination in air; comparative study
Document type D - Periodical articles
Subject(s) Agriculture, fishing, animal husbandry
Toxic and dangerous substances
Broad subject area(s) Biological hazards
Browse category(ies) Livestock rearing
Biological hazards
Exposure evaluation