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  • Title: Total dust and endotoxin in poultry operations: comparison between cage and floor housing and respiratory effects in workers.
    Author: Kirychuk SP, Dosman JA, Reynolds SJ, Willson P, Senthilselvan A, Feddes JJ, Classen HL, Guenter W.
    Journal: J Occup Environ Med; 2006 Jul; 48(7):741-8. PubMed ID: 16832232.
    Abstract:
    OBJECTIVE: The objective of this study was to assess respiratory outcomes and environmental exposure levels of workers in cage-housed and floor-housed poultry operations. METHODS: Poultry operations were evaluated for total dust, endotoxin, and ammonia, and respiratory symptoms and lung function tests of workers were conducted. RESULTS: Workers in floor-housed poultry operations had significantly greater exposures to total dust and ammonia, whereas workers from cage-housed poultry operations reported greater frequency of current and chronic symptoms overall and significantly greater current and chronic phlegm (39% vs 18% and 40% vs 11%, respectively). Endotoxin concentration (EU/mg) was a significant predictor (P = 0.05) of chronic phlegm for all poultry workers. CONCLUSIONS: Greater endotoxin concentration in the presence of significantly lower total dust, in conjunction with greater respiratory symptoms in workers from cage-housed poultry operations, as compared with workers from floor-housed poultry operations, appears to indicate that differences in environmental exposures may impact respiratory outcomes of workers.
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