Pickrell J
Department of Clinical Sciences, Kansas State University, Manhattan 66506-5606.
Vet Hum Toxicol. 1991 Feb;33(1):32-9.
Indoor atmospheres in swine or poultry confinement buildings, horse stalls or human dwellings contain gases, dusts and endotoxin in concentrations significantly in excess of those in outdoor environments. Although concentrations of such constituents differ appreciably between species, many of such differences may be related to differences in indoor mass loading and ventilation, or to the homogeneity of such ventilation. The high protein content of these indoor dust particles suggest they are of animal origin. Their ability to form bacterial colonies and to form or bind endotoxin suggest that the smallest and most respirable particles were manure particles containing enteric bacteria and endotoxin. Respiratory disease in swine, poultry and horses and in the workers who care for them may be caused by increased levels of carbon monoxide, ammonia, hydrogen sulfide, or indoor dust particles from feed and manure. The stagnant air of a well-insulated building causes the most active individual to attract these stagnant pockets, while the tendency of young animals to seek warmth may lead to the formation of additional pockets. Increased ventilation is an expensive solution to the problems associated with indoor air pollution. However, more thorough mixing of indoor air may reduce the effects of these clouds of pollutants.
猪舍、禽舍、马厩或人类住所的室内环境中，气体、灰尘和内毒素的浓度显著高于室外环境。尽管这些成分的浓度在不同物种之间存在明显差异，但其中许多差异可能与室内质量负荷和通风情况有关，或者与这种通风的均匀性有关。这些室内灰尘颗粒的高蛋白含量表明它们来自动物。它们形成细菌菌落以及形成或结合内毒素的能力表明，最小且最易吸入的颗粒是含有肠道细菌和内毒素的粪便颗粒。猪、家禽、马以及照料它们的工人所患的呼吸道疾病，可能是由一氧化碳、氨、硫化氢水平升高，或饲料和粪便产生的室内灰尘颗粒所致。保温良好的建筑内空气不流通，最活跃的个体容易吸引这些不流通的空气团，而幼小动物寻求温暖的倾向可能导致更多空气团的形成。增加通风是解决与室内空气污染相关问题的昂贵方法。然而，更彻底地混合室内空气可能会减少这些污染物云团的影响。
