Zhang Lan-He, He Yu-Wei, Chen Mo, Gao Min, Qiu Tian-Lei, Wang Xu-Ming
School of Chemical Engineering, Northeast Dianli University, Jilin 132012, China.
Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Huan Jing Ke Xue. 2016 Dec 8;37(12):4531-4537. doi: 10.13227/j.hjkx.201604176.
Animal feeding operations is considered as a source of airborne human pathogens and antibiotics genes. In this study, we investigated the concentration, size distribution and aerodynamic diameter of airborne bacteria, tetracycline resistant bacteria and erythromycin resistant bacteria from 22 animal feeding operations in three districts of Beijing. The results indicated that the highest and lowest concentrations of these three types of bioaerosol were detected in pig and cow house, respectively. The concentration of airborne bacteria was higher in layer house, whereas concentration of antibiotic resistant bacteria was higher in broiler house. Tetracycline and erythromycin resistant bacteria were detected from the atmospheric environment from out door of layer and broiler house with the percentages of 8.81%, 15.89% and 23.19%, 36.53%, respectively. The size distribution and aerodynamic diameter varied from inside and outside of pig, cow, and layer and broiler house. Most of tetracycline resistant bacteria and erythromycin resistant bacteria from current four types of animal feeding operations mainly deposited in pharynx, larynx and bronchus of respiratory system. This study would offer the base data for evaluating the detriment of bioaerosol from animal feeding operations to the worker and environment.
动物饲养场被认为是空气传播的人类病原体和抗生素基因的一个来源。在本研究中，我们调查了北京三个区22个动物饲养场空气中细菌、四环素抗性菌和红霉素抗性菌的浓度、粒径分布和空气动力学直径。结果表明，这三种生物气溶胶的最高和最低浓度分别在猪舍和牛舍中检测到。蛋鸡舍空气中细菌浓度较高，而肉鸡舍中抗生素抗性菌浓度较高。在蛋鸡舍和肉鸡舍室外的大气环境中检测到四环素抗性菌和红霉素抗性菌，其百分比分别为8.81%、15.89%和23.19%、36.53%。猪、牛、蛋鸡和肉鸡舍内外的粒径分布和空气动力学直径各不相同。当前四种动物饲养场中的大多数四环素抗性菌和红霉素抗性菌主要沉积在呼吸系统的咽部、喉部和支气管中。本研究将为评估动物饲养场生物气溶胶对工人和环境的危害提供基础数据。
