Kirychuk S P, Dosman J A, Reynolds S J, Willson P, Senthilselvan A, Feddes J J R, Classen H L, Guenter W
Institute of Agricultural Rural and Environmental Health, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
J Occup Environ Med. 2006 Jul;48(7):741-8. doi: 10.1097/01.jom.0000216215.39521.3c.
The objective of this study was to assess respiratory outcomes and environmental exposure levels of workers in cage-housed and floor-housed poultry operations.
Poultry operations were evaluated for total dust, endotoxin, and ammonia, and respiratory symptoms and lung function tests of workers were conducted.
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.
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.
本研究的目的是评估笼养和地面平养家禽养殖场工人的呼吸健康状况及环境暴露水平。
对家禽养殖场进行总粉尘、内毒素和氨的评估，并对工人进行呼吸道症状和肺功能测试。
地面平养家禽养殖场的工人接触总粉尘和氨的量显著更高，而笼养家禽养殖场的工人总体上报告当前和慢性症状的频率更高，当前和慢性咳痰的比例也显著更高（分别为39%对18%和40%对11%）。内毒素浓度（EU/mg）是所有家禽工人慢性咳痰的显著预测因子（P = 0.05）。
与地面平养家禽养殖场的工人相比，笼养家禽养殖场工人所处环境中总粉尘显著较低但内毒素浓度较高，且呼吸道症状更多，这似乎表明环境暴露差异可能会影响工人的呼吸健康状况。
