Distribution characteristics of airborne bacteria and fungi in the feedstuff-manufacturing factories

Kim, Ki-Youn; Kim, Hyeon Tae; Kim, Daekeun; Nakajima, Jun; Higuchi, Takashi

doi:10.1016/j.jhazmat.2009.04.059

Cited by 57 publications

(44 citation statements)

References 37 publications

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“…This fungus has been identified frequently in swine buildings, but not as a dominant species, 6,15,16 and it has been identified as a predominant airborne fungus in factories that manufacture feedstuff. 28 Although Penicillium may originate from feed, Penicillium, identified in the current fecal sample, may have also resulted from the poor sanitation of the humid and poorly ventilated pig house.…”

Section: Discussionmentioning

confidence: 88%

“…bacteria, have been identified as the predominant airborne bacteria in pig houses in Taiwan 4 and the United Kingdom 27 and in factories for manufacturing feedstuff. 28 However, Staphylococcus was not a predominant bacterium in the emissions from current chicken and swine fecal samples, and Micrococcus represented approximately 0.3% of the total colonies that were emitted by chicken feces. Therefore, Micrococcus and Staphylococcus, which have been previously identified in the air of poultry/swine farms, likely originate from feedstuffs, not feces.…”

Section: Discussionmentioning

confidence: 93%

“…The genus Cladosporium, the predominant fungus that is released from chicken (65.9%) and swine (13.4%) feces, is a common fungus in the natural environment and has been identified in 31% of poultry feed samples. 31 Furthermore, the genera Cladosporium, Penicillium, and Aspergillus were also identified as the predominant airborne fungi in a factory that manufactures feedstuff 28 and in some pig houses. 6 However, Cladosporium was not identified in another swine study.…”

Section: Discussionmentioning

confidence: 99%

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Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Chien

Chen

Lin

et al. 2011

Journal of the Air & Waste Management Association

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Bioaerosols generated during livestock and poultry production are significant occupational hazards. This study investigates the characteristics of bioaerosols released from animal feces. Fresh feces from pigs and chickens were obtained and tested in a controlled-environment facility. Airborne viable (culturable) bacteria and fungi were sampled hourly for 48 hr. The predominant species were identified via polymerase chain reaction analysis. The number of bacterial colonies released from chicken feces increased gradually, peaked at approximately 20 hr, and remained relatively constant to test end; however, the bacterial colonies released from swine feces did not increase significantly. The chicken feces released significantly (P Ͻ 0.05) more bacterial aerosols than swine feces over 40 hr, by approximately 1 order of magnitude. However, the difference in total fungal aerosols released from the two feces types was relatively small (30 -40%) and insignificant (P Ͼ 0.05). Aerosols sized between approximately 0.65 and 1

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Chien

Chen

Lin

et al. 2011

Journal of the Air & Waste Management Association

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“…Potato Dextrose Agar (PDA) was used as the medium. (Chloramphenicol 100μg/lit) was added in order to inhibit the growth of bacteria used as the Before initiating the experiment, the device was disinfected by 70% alcohol (Fang et al, 2005, Kim et al, 2009. The screens were then put into Biostage.…”

Section: Methodsmentioning

confidence: 99%

Visiting Hours Impact on Indoor to Outdoor Ratio of Fungi Concentration at Golestan University Hospital in Ahvaz, Iran

Soleimani¹,

Sadeghi-Nejad²,

Alighardashi³

et al. 2017

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Prevalence of diseases originated from air pollution such as asthma and allergies, can be attributed to the bioaerosols. Bacteria and fungi are the main sources of hospital infections, which cause most of the diseases and mortality. The aim of this study was to determine the ratio of indoor to outdoor fungi concentration, the effect of population and people density on fungi concentration and the relationship between indoor and outdoor environment. In this study, three stations were used: outdoor of the hospital, general indoor and ICU wards of the Ahvaz hospital. These locations were chosen for sampling of the airborne fungi from October to December 2010. The samples were collected in 2 min, flow rate of 28.3 L/min using quick take (SKC Inc., PA, USA), based on the Andersen method.The three dominant culturable fungi genera in sampling stations were Aspergillus, Penicillium, and Cladosporium. The average of total culturable fungi concentration before visiting time was 365.8 CFU m -3 and increased to 578CFU m -3 after visiting time. The indoor to outdoor ratios (I/O) in ICU and internal for fungi before visit were 0.36 and 0.68, respectively. However, these ratios in ICU and internal station for fungi after visit were 0.78 and 0.99, respectively. Following the visit of the visitors, the concentration of fungi available indoor was conspicuously higher (even in the wards in which no visitors were allowed; e.g. ICU, etc). Hence the amount of indoor fungi was affected by the concentration of outdoor fungi and visitors crowd.

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“…P. aeruginosa, an opportunistic pathogen, causes bacteremia and gastrointestinal infections. 47 S. agalactiae is a main human and bovine pathogen. It was repeatedly reported as the most common agent of invasive infections in neonates, causing pneumonia, septicemia and meningitis, and is an increasingly common pathogen in adults.…”

Section: Figurementioning

confidence: 99%

Evaluation of Microbial Contamination in Frequently Used Fomites in Kuwait

Al‐Harbi

Anderson

Elmi

2017

BIJ

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The occurrence of potential pathogens and the levels of contamination at individual sites, particularly in fitness club, gas station, home, hospital, and supermarket in Kuwait is described in this paper. The samples were collected using sterile swab sticks. Results obtained showed the highest bacterial count of 2.8 log10 CFU/ml in bathroom doorknobs at gas station, while the least was obtained from pantry in hospital with 1.3 log10 CFU/ml. Prevalent isolated bacterial contaminants were Staphylococcus epidermidis (34%), followed by Enterococcus faecalis (26%), Staphylococcus aureus (14%), Escherichia coli (10%), Streptococcus pyogenes and Pseudomonas alcaligenes (4%), Streptococcus agalactiae, Klebsiella oxytoca, Klebsiella pneumoniae, and Pseudomonas aeruginosa (2%). Eighty percent of all swab samples cultured were gram positive and 20% were gram negative bacteria. The types and numbers of diseasecausing microbes reported in previous epidemiological studies were also found in this study. Appropriate hygienic measures to suppress any potential microbial crosscontamination are therefore needed. It is also imperative to conduct regular testing to check for bacterial contamination and increase community awareness and education for hygienic standards.

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Distribution characteristics of airborne bacteria and fungi in the feedstuff-manufacturing factories

Cited by 57 publications

References 37 publications

Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Visiting Hours Impact on Indoor to Outdoor Ratio of Fungi Concentration at Golestan University Hospital in Ahvaz, Iran

Evaluation of Microbial Contamination in Frequently Used Fomites in Kuwait

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