Distribution of Microbial Aerosol in Live Poultry Markets and the Detection of Endotoxin
Microbial aerosol whose species and concentration are closely related to human health is ubiquitous.The effect of microbes on human and animal health and production performance is,in many cases,caused by the spreading of air.Samples in this experiment were from a live poultry market(LPM)in Tai'an,China,collected 3 times a day(8 am,14 pm and 20 pm)over 3 consecutive days each month for 11 months(Original sampling plan was a year,the government due to the environmental protection,the LPM closed).The main indicators of the test were concentrations of cultural airborne bacteria,airborne fungi,and gram-negative bacteria.At the same time the species of gram-negative bacteria and the concentration of endotoxin was tested.Temperature and humidity were recorded in the process of each sampling.Experimental results showed that the diurnal variation of the concentration of bacteria,fungi,and gram-negative bacteria is higher in the morning and evening and lower at noon.The concentrations of airborne bacteria and gram-negative bacteria increased first in earlier months and decreased in later months,with the peak appearing in the autumn.The concentration of fungi showed a decrease first and then tended to stabilize,with the peak occurring in the spring.The concentration peak of endotoxin occurred in the summer.Endotoxin levels were significantly correlated with humidity(r = 0.90,p < 0.01).Most bacteria were distributed at the third or fourth levels in the ANDERSON-6 sampler.The dominant species of gram-negative bacteria during the four seasons were Pseudomonas aeruginosa,Acinetobacter,Klebsiella pneumoniae,and Salmonella.In China,people have a habit of eating live poultry,LPM distribution is wide spread,stream of people and traffic flow are large,easily caused the spread of bacteria and viruses,so the LPM microbial aerosol research have significant public health implications.
Live Poultry Markets cultural airborne bacteria airborne fungi gram-negative bacteria Airborne endotoxin Public health significance
Bo Wu Kai Meng Liangmeng Wei Yumei Cai Tongjie Chai
College of Veterinary Medicine,Shandong Agricultural University,Sino-German Cooperative Research Cen College of Veterinary Medicine,Shandong Agricultural University,Sino-German Cooperative Research Cen
国内会议
成都
英文
28-35
2019-05-29（万方平台首次上网日期，不代表论文的发表时间）