Cage Versus Noncage Laying-Hen Housings: Respiratory Exposures
作者： Veronica Arteaga , Diane Mitchell , Tracey Armitage , Daniel Tancredi , Marc Schenker
DOI: 10.1080/1059924X.2015.1044681
关键词: Aerodynamic diameter 、 Animal science 、 Size fractions 、 Cage 、 Environmental engineering 、 Fine particulate 、 Work shift 、 Chemistry 、 Respiratory system
摘要: ABSTRACTThe objective of this study was to compare the personal respiratory exposures poultry workers in three different types layer housing under commercial production conditions. Workers were randomly assigned each conventional cage, enriched and aviary barns a crossover repeated-measures design for observation periods over hens’ lifetime. Inhalable fine particulate matter (PM) endotoxin both size fractions assessed by area samplers work shift. Concentrations inhalable PM, PM2.5 (PM with an aerodynamic diameter <2.5 μm), higher than either or barns. Geometric means (95% confidence intervals [CIs]) PM aviary, conventional, 8.9 (6.8–11.5) mg/m3 7517.9 (5403.2–10,460.2) EU/m3, 3.7 (2.8–4.8) 1655.7 (1144.6–2395.2) 2.4 (1.8–3.3) 1404.8 (983.3–2007.0) respectively. A...
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