作 者：
杨礼;杜龙环;陈家磊;杨朝武;胡陈明;蒋小松;何志平;杜华锐;余春林;邱莫寒;张增荣;夏波;宋小燕;熊霞;彭涵;李晴云
单 位：
四川大恒家禽育种有限公司;四川大学建筑与环境学院;动物遗传育种四川省重点实验室;四川省畜牧科学研究院
关键词：
全环控鸡舍;细菌气溶胶;细菌浓度;分布规律
摘 要：
为掌握冬季全环控鸡舍细菌气溶胶分布规律,使用六级筛孔撞击式微生物采样器,对采用纵向通风模式的全环控鸡舍细菌气溶胶进行采样分析。结果显示:通风条件下,舍内细菌气溶胶浓度随气流方向逐步升高,在前端两侧细菌气溶胶浓度高于中部,而到后端鸡舍中间受风机影响,细菌气溶胶在中间出风口聚集,高于两侧,可达到8.989×10~4cfu/m~3,超过国家行业推荐标准,同时鸡舍中上层的细菌气溶胶浓度高于下层;在粒径分布上,84.84%的细菌气溶胶分布于第一、二、三和四级,随气流方向,分布于第一、二级的细菌气溶胶比例增加,第五、六级比例减少。
译 名：
Distribution Law of Bacterial Aerosol in Environment-controlled Chicken House in Winter
作 者：
YANG Li;DU Longhuan;CHEN Jialei;YANG Chaowu;HU Chenming;JIANG Xiaosong;HE Zhiping;DU Huarui;YU Chunlin;QIU Mohan;ZHANG Zengrong;XIA Bo;SONG Xiaoyan;XIONG Xia;PENG Han;LI Qingyun;Sichuan Animal Science Academy;Sichuan Dahen Poultry Breeding Co., Ltd.;College of Architecture and Environment, Sichuan University;Sichuan Key Laboratory of Animal Genetics and Breeding;
关键词：
environment-controlled chicken house;;bacterial aerosol;;concentration;;distribution
摘 要：
In order to fully understand the bacterial aerosol distribution pattern in the environment-controlled chicken house in winter, a six-stage Anderson air sampler was applied in this study to collect and analyze the bacterial aerosol distribution in a tunnel ventilated broiler house. The results demonstrated that under ventilation condition, the overall concentration of bacterial aerosol in the house gradually increased with the direction of the airflow. The concentration of bacterial aerosol on both sides of the front end aisles was higher than that in the middle aisle while the middle aisle at the rear part of the house showed a higher concentration comparing the aisles at two sides due to the outlet fan.The largest bacterial aerosol concentration measured at the middle aisle at the rear part of the house, reached 8.989×10~4 cfu/m~3,exceeding the national industry recommended standards. Meanwhile, the bacterial aerosol concentration in the upper part of the house was higher than that in the lower part. In terms of the particle size 84.84% of the bacterial aerosol is collected at the first, second, third and fourth stage of the air sampler. The number of aerosols at the first and second stage increased with the direction of the airflow while the number of aerosols at the fifth and sixth showed an opposite scenario.
