Culturable Airborne Bacteria in Outdoor Poultry-Slaughtering Facility

Liang, Rongqi; Xiao, Peng; She, Ruiping; Han, Shiguo; Chang, Lingling; Li, Zheng

doi:10.1264/jsme2.me12178

Cited by 21 publications

(11 citation statements)

References 24 publications

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“…In the current study, the concentration of airborne aerobic bacteria inside the enclosed-type rabbit shed was calculated to be between 2.11-6.36×10 4 colony forming unit (CFU)/m 3 . This number is lower than corresponding figures reported from pig and chicken sheds (10 5 -10 6 CFU/m 3 ) (Just et al, 2011;Liang et al, 2013). This may be a result of the stricter husbandry practices in enclosed-type rabbit sheds compared with the other examples.…”

Section: Resultscontrasting

confidence: 57%

Technical note: concentration and composition of airborne aerobic bacteria inside an enclosed rabbit shed

Li²,

Mu³

et al. 2016

World Rabbit Sci.

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Numerous studies have been conducted to analyse bacterial aerosols in animal houses, which is beneficial for the control of animal diseases. However, little information on aerosols in enclosed rabbit sheds was available. An FA-1 sampler was employed to collect air samples in an enclosed rabbit house in the Qingdao region of China. Concentration, composition, and aerodynamics of bacterial aerosols inside the enclosed rabbit shed were systematically analysed. The concentration of airborne bacteria inside the rabbit shed was 2.11-6.36×10 4 colony forming unit/m 3 (CFU/m 3 ). Seventeen species of bacteria belonging to eight genera were identified. Among these, there were 11 species belonging to 4 genera of gram-positive bacteria, and 6 species belonging to 4 genera of gram-negative bacteria. The dominant species of bacteria were, in descending order, Micrococcus luteus (49.4%), Staphylococcus epidermidis (25.5%), and Alcaligenes odorans (10.2%). A total of about 76.3% of airborne bacteria was distributed in stages C-F of the FA-1 sampler (that ranges from A to F), with aerodynamic radii <3.3 µm in diameter. These particulates could enter lower respiratory tracks and even alveoli, posing a potential threat to the health of both animals and breeders.

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Section: Resultscontrasting

confidence: 57%

Technical note: concentration and composition of airborne aerobic bacteria inside an enclosed rabbit shed

Li²,

Mu³

et al. 2016

World Rabbit Sci.

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“…In this case, a total of 56.2% bacterial isolates (53.4% from the polluted weather samples and 78.1% from the non-polluted weather samples) were found to be culturable airborne bacteria. GPB were dominant under both weather conditions, which was in agreement with other studies (Brandl et al, 2014;Fang et al, 2006;Górny and Dutkiewicz, 2002;Górny et al, 1999;Liang et al, 2013). However, in both the indoor and outdoor samples, GNB had a higher relative abundance in polluted weather than in non-polluted weather, which indicated a potential correlation between pollutants and GNB.…”

Section: Discussionsupporting

confidence: 90%

Comparison of culturable antibiotic-resistant bacteria in polluted and non-polluted air in Beijing, China

Mao

Ding

Wang

et al. 2019

Environment International

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Background: Air pollution has been a serious health issue in Beijing for years. Airborne antibiotic-resistant bacteria could be a potential health crisis as reserve of antibiotic resistance transmission in environment. The composition and antibiotic resistance pattern of culturable bacterial community and how these are affected by air pollution remain unclear.Objectives: This study aimed to compare the compositions and antibiotic resistance patterns of culturable bacteria in polluted and non-polluted weather conditions in Beijing. Methods: Air samples were collected indoors and outdoors during polluted and non-polluted weather using sixstage Andersen Samplers. For each isolated bacterium, the 16S ribosomal RNA gene was amplified, sequenced, and blasted against the National Center for Biotechnology Information database Antibiotic resistance was conducted by antimicrobial susceptibility testing. Results: Bacterial concentration in polluted weather was significantly higher than in non-polluted weather, both indoors and outdoors (P < 0.05). Gram-positive bacteria (GPB) were dominant in both weathers but gramnegative bacteria (GNB) were more abundant in polluted weather than non-polluted weather both indoors and outdoors. Multidrug-resistant (MDR) bacteria occupied 23.7% of all bacterial isolates, 22.4% of isolates from polluted weather and 27.8% of isolates from non-polluted weather. Penicillins were resisted by 72.4% and 83.3% of isolates from polluted and non-polluted weather, respectively. Conclusions: The bacterial concentration was significantly higher in polluted weather, compared to non-polluted weather. Polluted weather is correlated with changes in the bacterial composition in the air, with a greater abundance of GNB. Penicillins was resisted by over 70% of bacterial isolates. The abundance of MDR bacteria suggested potential risks for human health.

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“…have a greater impact on the concentration of bacteria (Fang et al, 2005). The concentration of bacteria in the atmosphere, in addition to being influenced by its own environmental factors, is closely related to human activities, such as the flow of people, flow of traffic, etc (Liang et al, 2013). These human activities can result in the flow of dust and small particles in the soil, causing an increase in the concentration of microbial aerosol (Hameed et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Microbial aerosols pose a potential threat to the health of animals and humans by invading the body through mucosa, skin damage, the digestive tract, and the respiratory tract (Duan, 2005; Wen et al, 2013). The distribution of airborne bacterial aerosol in live poultry market (LPM), on the one hand, is affected by the sale of live poultry and the flow of vendors and customers; on the other hand, it is influenced by natural factors such as traffic and meteorological events (Liang et al, 2013). A number of studies on the distribution of bacteria indoors and outdoors have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Fluctuations of Microbial Aerosol in Live Poultry Markets and the Detection of Endotoxin

Meng

Wei

et al. 2017

Front. Microbiol.

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Microbial aerosol whose species and concentrations 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 three times a day (8 am, 14 pm, and 20 pm) over three consecutive days each month for 11 months (Original sampling plan was a year, the government due to the environmental protection, the was 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 were tested. Temperature and humidity were recorded in the process of each sampling. The results showed that the diurnal variation of the concentration of bacteria, fungi, and Gram-negative bacteria is higher in the morning and evening, but lower at noon. The concentrations of airborne bacteria and Gram-negative bacteria increased 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 and fourth stages (2.1–4.7 μm) in the ANDERSEN-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 fresh poultry, LPM distribution is widespread, 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.

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Culturable Airborne Bacteria in Outdoor Poultry-Slaughtering Facility

Cited by 21 publications

References 24 publications

Technical note: concentration and composition of airborne aerobic bacteria inside an enclosed rabbit shed

Technical note: concentration and composition of airborne aerobic bacteria inside an enclosed rabbit shed

Comparison of culturable antibiotic-resistant bacteria in polluted and non-polluted air in Beijing, China

Seasonal Fluctuations of Microbial Aerosol in Live Poultry Markets and the Detection of Endotoxin

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