• Journal of Preventive Medicine and Public Health
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• 제48권1호
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• pp.53-61
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• 2015

Objectives: The seroprevalence of hepatitis E virus (HEV) among high-risk groups overseas is high, but studies in these groups are rare in South Korea. We conducted the present study from April to November 2012 to obtain data on the seroprevalence and associated risk factors for HEV among slaughterhouse workers in South Korea. Methods: Slaughterhouse workers from 80 workplaces nationwide were surveyed in South Korea in 2012. The subjects comprised 1848 cases: 1434 slaughter workers and 414 residual products handlers. By visiting 80 slaughterhouses, which were mixed with 75 of which also performed residual products handling, we conducted a questionnaire survey for risk factors and obtained blood samples in order to determine the seropositivity and seroprevalence of HEV. Anti-HEV IgG and IgM were measured using HEV IgG and IgM enzyme-linked immunospecific assay kits and HEV antigen was measured by reverse transcription polymerase chain reaction (RT-PCR). Results: The seropositivity of anti-HEV IgG was 33.5% (slaughter workers 32.8% and residual products handlers 36.2%), and among the seropositive individuals the seroprevalence of anti-HEV IgM was 0.5% (slaughter workers 0.5%, residual products handlers 0.7%). The response rate of HEV-antigen as measured by RT-PCR was 0.2%. Risk factors significantly related to anti-HEV IgG seropositivity were age, sex, and working duration (slaughter workers only). Conclusions: There were significant risk factors (sex, age, and working duration) for HEV identified in our study. All three positive cases for HEV-antigen by RT-PCR were related to pig slaughter but without statistical significance. To prevent HEV, an educational program and working guidelines may be needed for high risk groups.

• Environmental Engineering Research
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• 제25권3호
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• pp.309-315
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• 2020

Slaughterhouse wastewater (SWW) is characterized as one of the most harmful agriculture and food industrial wastewaters due to its high organic content. The emissions of SWW would cause eutrophication of surface water and pollution of groundwater. This study developed a pilot scale anaerobic-aerobic slaughterhouse wastewater treatment process (AASWWTP) to enhance the chemical oxygen demand (COD) and total nitrogen (TN) removal. The optimum supernatant reflux position and ratio for TN removal were investigated through the modified Box-Behnken design (BBD) experiments. Results showed that COD could be effectively reduced over the whole modified BBD study and the removal efficiency was all higher than 98%. The optimum reflux position and ratio were suggested to be 2 alure and 100%, respectively, where effluent TN concentration was satisfied with the forthcoming Chinese discharge standard of 25 mg/L. Anaerobic digestion and ammonia oxidation were considered as the main approaches for COD and TN removal in the AASWWTP. The results of inorganic nutrients (K⁺, Na⁺, Ca²⁺ and Mg²⁺) indicated that the SWW was suitable for biological treatment and the correspondingly processes such as AASWWTP should be widely researched and popularized. Therefore, AASWWTP is a promising technology for SWW treatment but more research is needed to further improve the operating efficiency.

• 한국동물위생학회지
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• 제46권2호
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• pp.115-122
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• 2023

This study was performed to investigate the distribution of mosquito vectors related to the zoonotic disease in Daejeon. Samples were taken using a blacklight trap once a month from March to November 2021 at the slaughterhouse in Daejeon. A total of 820 mosquitoes were captured and classified into 5 genera and 8 species. Among the collected mosquitoes, 319 (38.9%) and 295 (35.93%) were Aedes vexans nipponii and Culex pipiens pallens, respectively, making them the dominant species. The overall number of mosquitoes collected started to increase from May and reached the largest value of 329 (40.12%) in June. Trapped mosquitoes are created 72 pools by environmental condition and by species. The pools were tested by PCR methods for 7 zoonotic pathogens. Flavivirus-positive products were confirmed by DNA sequencing. Japanese encephalitis viruses were detected in 3 pools collected from cow lairage (Culex pipiens pallens) in May, cow by-product processing room (Aedes vexans nipponii) in June and cow lairage (Mansonia uniformis) in June. Culex flavivirus were detected in 4 pools. Based on the results of this study, it is considered that continous surveillence of mosquitoes in livestock assembly facilities (slaughterhouse) should be performed for controlling mosquito populations and mediating disease spread by mosquitoes.

• 대한수의학회지
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• 제31권3호
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• pp.271-277
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• 1991

To investigate the epidemiological trait of listeriosis, Listeria spp were isolated from poultry meat, products and environmental specimens in chicken slaughterhouse. Also determined were isolation rates by the different enrichment procedures, the biochemical properties of isolates. In a total of 307 samples including poultry meat, liver, feathers, feces, chiller water, scalding water overflow and slaughterhouse floor, Listeria spp were isolated predominantly from scalding water overflow (90.0%), body skin before washing (66.7%), liver (20.0%) and feathers(15.0%) However, few Listeria spp were isolated from body skin after washing and feces. The higher isolation rates were obtained in the secondary enrichment procedure (7.2%) than in the primary enrichment (3.9%); after stored the secondary enrichment cultures for 2 weeks at $4^{\circ}C$, Listeria spp were present in 9.8%. The majority of the isolated Listeria spp were identical to those of the standards strains in biochemical and cultural properties. Overall, Listeria spp were present in 13.4% of the specimens tested, and were in order of prevalence of L innocua(11.1%), L monocytogenes(3.3%), L grayi(0.7%) and L murrayi(0.3%).

• 한국토양비료학회지
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• 제36권2호
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• pp.80-85
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• 2003

도축폐기물에 산화칼슘을 처리하여 제조된 석회처리비료의 효과를 구명하기 위하여 배추를 공시작물로 하여 생육, 식물체중 무기성분 함량, 토양의 이화학적 특성 등을 조사하였다. 배추의 생체중은 처리구간에 통계적으로 유의성 있는 차이는 없었으나, 석회처리비료를 $169kg\;10a^{-1}$ 수준으로 시용하였을 때 삼요소 비료를 처리한 대조구보다 5% 정도 증가하는 경향이었다. 식물체중 N, P, K 함량은 석회처리비료를 시용한 시험구에서 대조구에 비해 높았으나, Mg 함량은 대조구에서 높았고 Ca 함량은 대조구에서 가장 낮았다. 석회처리비료를 $169kg\;10a^{-1}$ 수준으로 처리하였을 때 토양산도 교정효과는 석회소요량으로 부산석회분말을 처리한 경우와 동일하게 나타났다. 유기성폐기물에 석회를 처리하여 제조된 석회처리비료는 토양에 유기물을 함께 공급할 수 있는 산성토양 개량제로서 활용될 수 있을 것으로 사료된다.

• 한국축산식품학회지
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• 제24권3호
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• pp.232-237
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• 2004

본 연구는 도축장 규모 및 계절별로 도축 공정 단계에 따른 미생물학적 오염도와 변화 추이를 조사하기 위하여 수행되었다. 도축 5단계 즉, 박피 후, 내장 적출 후, 최종 세척 전, 최종 세척 후 그리고 냉장실에서 소 도체 흥부 표면에 대한 미생물학적 분석을 위하여 가로세로 10${\times}$10 cm의 면적에 대하여 swab 방법으로 시료를 채취하였다. 그 결과 겨울철 시료에 있어 대규모 도축장은 박피, 내장 적출 및 최종 세척 전까지의 도축단계에서는 $10^{0}$∼$10^2$CFU/ $\textrm{cm}^2$ 수준의 일반세균이 검출되어 $10^{0}$∼$10^3$ 수준을 보인 중소규모 도축장에 비하여 1∼2 log값이 적은 미생물이 검출되었으나, 최종세척 후($10^2$CFU/$\textrm{cm}^2$)와 냉장실($10^1$CFU/$\textrm{cm}^2$)의 미생물 검출값에 있어서는 도축장 규모에 따른 차이를 보여주지 않았다. 겨울철 시료는 봄철 시료에 비하여 도축장 규모에 차이 없이 일반세균이 1 log 값 정도 적게 검출되었다. 최종세척 공정의 시료채취 부위에 따른 세척 효과를 보기 위한 실험에서 둔부 부위에서는 세척 효과를 보여주었지만, 옆구리와 흉부 부위에서는 오히려 세척 후 미생물 수가 최종 세척 전 단계보다 증가하는 경향을 보여주었다.

• 환경위생공학
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• 제15권4호
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• pp.14-19
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• 2000

This study was carried out to get efficient of nutrient removal and wastage sludge production minimized effects on the treatment of slaughterhouse wastewater using aerobic curtain biological film contact process. As a results of biofilm attachment experiment aggravation of water quality due to excessive biofilm showed after every 15 days of operating times. The concentration of BOD and COD in the influent were 2500~3000mg/L and 1700~2100mg/L , respectively. The average BOD and CoD were 9mg/L and 17mg/L , respectively. The result of this experiment was wastage sludge did not almost generated and the removal efficiency of nutrients were kept equilibrium.

• 한국식품위생안전성학회지
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• 제12권1호
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• pp.78-82
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• 1997

Surface swab samples from beef (188), pork (240) and chicken (95) carcasses were collected from slaughterhouse in Kangwon and Kyunggi areas from March through July 1996. The samples were examined on the level of E. coli biotype I relevant to fecal contamination due to unsanitary processing control and the existence of verocytotoxin-producing E. coli (VTEC). E. coli biotype I were confirmed from 38.8% of beef, 40.0% of pork, and 69.5% of chicken carcasses. Little variation was noted among three sampling points; rump, flank and neck of beef, ham, belly and jowls of pork. coli O157:H7 was only confirmed from 2 of 188 beef carcasses. E. coli biotype I. All the isolated E. coli O157 showed positive for vero cell cytotoxicity test. Isolation rate of E. coli O157 in summer was higher than in spring. In case of pork and chicken carcasses, E. coli O157 was isolated in summer only.

• 한국동물위생학회지
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• 제34권2호
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• pp.149-152
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• 2011

From January to November in 2010, a result of chicken infectious anemia virus (CIAV) antibodies ELISA test about 500 number in 25 broiler breeder farms and 500 number in a broiler chickens slaughterhouse from 25 farms in Iksan area, Jeonbuk. The result of 100% (25/25) positive rate in broiler breeder farms group and 98.6% (493/500) positive rate from each individual. In each week-age group, 98.8% of 18~20 weeks and 98.3% of 21~24 weeks showed positive without any significant differences. In slaughterhouse case, broilers from the farms showed 36.0% (9/25) positive rate and each individual showed 20.4% (102/500) positive rate.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2008년도 춘계학술발표대회 논문집
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• pp.63-66
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• 2008

In urban planning and architecture, there has been emerging paradigm of regeneration, taking place of demolishing first, and new development next principle. Retrofit and remodeling, thereby, became important. The purpose of the research in to examine a reused space with new function. The target space was the former slaughterhouse in the ailing district of the Bologna City with ever increasing vandalism and fear caused by empty buildings, which was regenerated into a culturally affluent area, such as cultural facilities including cinema, gallery, art school cluster along with elderly club and child care center nearby. Through this regeneration, more affluent life opportunity was provided for citizens and local residents. This case study shows how old the building and interior space have been transformed to accommodate contemporary needs, while preserving historical features.