Microbial Composition in Bioaerosols of a High-Throughput Chicken-Slaughtering Facility

Lues, J.F.R.; Theron, Maria M.; Venter, Pierre; Rasephei, Mpelinyana Hopemore Rethabiseng

doi:10.1093/ps/86.1.142

Cited by 67 publications

(42 citation statements)

References 26 publications

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“…Mead (2004) reported a substantial decrease in TVC and coliform bacteria counts after carcass washing and after chilling. Lues et al (2007) found that the highest counts of microorganisms were recorded in the initial stages of processing, comprising the receiving-killing and defeathering areas, whereas the counts toward the evisceration, air chilling, packaging and dispatch areas decreased. Tsola et al (2008) reported a significant (P < 0.001) decrease in both TVC, coliforms and E. coli after internal and external washing.…”

Section: Discussionmentioning

confidence: 94%

Microbiological quality of broiler carcasses during slaughter processing

et al. 2012

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Microbial contamination of poultry carcasses can be influenced by many factors during transport and slaughtering. The aim of this study was to evaluate the impact of four processing steps (plucking, evisceration, washing and chilling) on the total viable counts (TVC), counts of Escherichia coli, Salmonella spp. and Listeria spp. incidence on broiler carcasses. A total of 160 broiler carcasses originating from one farm were collected during one year period at a Czech slaughterhouse and examined. Both TVC and E. coli counts decreased during processing from 4.6 log cfu/cm 2 and 3.5 log cfu/cm 2 to 3.7 log cfu/cm 2 and 1.8 log cfu/cm 2 , respectively, with a major impact of washing on TVC and washing and chilling on E. coli decrease (P < 0.001). Both Salmonella spp. (6 strains) and Listeria spp. (12 strains, none of L. monocytogenes) were found sporadically in all processing steps followed. However, a decreasing trend was observed in Salmonella counts and Listeria spp. incidence during the processing. Thus, this study brings new valuable information on the dynamics of microflora during modern poultry processing.

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Section: Discussionmentioning

confidence: 94%

Microbiological quality of broiler carcasses during slaughter processing

et al. 2012

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“…This has re-directed research interest thereby shifting grounds towards food safety and hence has attracted substantial funding and research grants to third world countries for research in food safety, zoonoses and one's health (Grace, 2015;Bardosh et al, 2017). Contamination at the slaughterhouse and contamination of meat occurs because of inadequate hygienic conditions and handling, and may be as a result of the consequence of contaminated air in form of bioaerosol which is loaded with common microbial contaminants like Salmonella, Escherichia, Clostridium (Lues et al, 2007); causing contamination of the carcass/meat, the working surfaces and equipments used in the processing (Bakhtiary et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Potential risk factors associated with carcass contamination in slaughterhouse operations and hygiene in Oyo state, Nigeria

Fasanmi¹,

Makinde²,

Popoola³

et al. 2018

Int. J. Livest. Prod.

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Avoiding meat contamination at slaughterhouses is crucial for food safety; consumers' awareness and concern for the type of food they eat has attracted global attention and redirected research interests towards food safety. The practical hygiene in the slaughterhouse operations play key role in the safety and wholesomeness of meat. A cross sectional survey was carried out on 60 slaughterhouses in Ibadan, Oyo and Ogbomosho, in Oyo State, South Western Nigeria. A well-structured pre-tested checklist was administered and scored; data collected were subjected to descriptive statistics and ttest to separate significant differences between abattoirs and slaughter slabs. This study revealed that for the 50 items scored, only four [environmental cleanliness (66.7%), washing of slaughtering tools and equipments (60%), access to facility to wash hands and shoes (71.7%), and appropriateness of slaughterhouse location (58.3%)] were partially observed. The remaining 46 are non-existent or poorly implemented. However, only 9 out of the 23 items of the practical hygiene and level of cleanliness compared between the surveyed abattoirs and slaughter slabs, showed significant (p < 0.05) differences. These are garbage disposal (p<0.001), washing of slaughtering tools and equipments (p<0.001), disinfection of the slaughterhouse (p<0.014), disinfection of premises (p<0.001), and disinfection of infrastructure and equipments (p<0.002). Others are, availability of sufficient and clean water (p<0.001), good hygiene (p<0.033) and also, hands washing after slaughtering (p<0.001) and hands disinfection (p<0.001). The surveyed abattoirs performed better than slaughter slabs in hygiene and level of cleanliness. But nevertheless all evidences of unhygienic practices and predisposing risk factors across the surveyed slaughter locations would serve as critical points for the distribution of contaminated meat to the public, and also serve as medium for occupational disease acquisition. Hence the issue of food safety is called to question. There is the need for workers training on operational hygiene and occupational zoonoses.

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“…Bioaerosols derive from natural and anthropogenic processes (Burrows et al, 2009;Heald and Spracklen, 2009), and include bacteria, viruses, fungi, pollen, plant detritus, microalgae, protozoa, insect fragments, animal fur, and dander. Past studies have focused on occupational exposure in agricultural environments (Adhikari et al, 2004;Liao and Chen, 2005;Lues et al, 2007;Yuan et al, 2010;Chien et al, 2011;Pattey and Qiu, 2012), but little is known about human exposure and the effects on ambient air quality standards in population centers surrounding agricultural facilities.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Ambient PM10 Bioaerosols in a California Agricultural Town

Chow

Yang

Wang

et al. 2015

Aerosol Air Qual. Res.

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Ambient bioaerosols in PM 10 samples were measured at three sites in Corcoran, an agricultural town in the southern San Joaquin Valley (SJV) of California, during fall of 2000 corresponding to the cotton harvest season. Elevated bioaerosol concentrations were measured near grain elevators (GRA site) and a cotton handling facility (BAI site) as compared to levels in a residential community (COP site), ~2 km northeast of these sources. Average endotoxin levels (13 ± 17 EU/m 3 ) at the grain elevator site were three to eight times higher than averages at the nearby cotton-handling and residential sites. The highest level (47.6 EU/m 3 ) at the grain elevator site was about half of the exposure limit of 90 EU/m 3 set by the Dutch Expert Committee on Occupational Safety. Particle counts of fungal spore (66,333 particles/m 3 ) and pollen grain (2,600 particles/m 3 ) concentrations were more than double those reported in the literature. Average fungal biomarker concentrations of 170 and 131 ng/m 3 for arabitol and mannitol, respectively, were 1-2 orders of magnitude higher than those from nonagricultural areas. The low correlation (r < 0.11) of three fungal markers (i.e., (1→3)-β-D-glucan, arabitol, and mannitol) with fungi counts is consistent with findings by others and indicates that these are insufficient as surrogates to represent fungal exposure. Agricultural activities contributed measureable amounts to PM 10 mass and organic carbon (OC), dominated by fungal spores (i.e., 5.4-5.8% PM 10 mass and 11.5-14.7% OC). The sum of fungal spores, pollen grains, and plant detritus accounted for an average of 11-15% PM 10 and 24-33% OC mass. Bioaerosols can be important contributors to PM 10 mass in farming communities similar to Corcoran, especially during intense agricultural activities.

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Microbial Composition in Bioaerosols of a High-Throughput Chicken-Slaughtering Facility

Cited by 67 publications

References 26 publications

Microbiological quality of broiler carcasses during slaughter processing

Microbiological quality of broiler carcasses during slaughter processing

Potential risk factors associated with carcass contamination in slaughterhouse operations and hygiene in Oyo state, Nigeria

Characterization of Ambient PM10 Bioaerosols in a California Agricultural Town

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