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Chong-Hae Hong 한국예방수의학회(구 한국수의공중보건학회) 2017 예방수의학회지 Vol.42 No.2
Reanalysis using the US Food and Drug Administration Hazard Analysis method was performed to evaluate the effectiveness of the current Critical Control Point (CCP) configuration for non-thermal processes such as meat packaging plants and butcher shops. During non-heat treatment processing without the process of removing or reducing contaminated microorganisms, it is necessary to set and control the incoming material inspection step with the CCP since this step is essential to prevent the inflow of contaminants through incoming materials. The temperature control of the final product storage refrigerated room can be managed by the prerequisite program. However, the CCP setting of the refrigerated room prior to shipment of the meat packaging plant in which the cold chain system should be maintained in the following distribution stage is recognized. It is not an effective method to install a metal detector and manage it with CCP for metal hazard control. Improving hygienic cleaning guidelines and enhancing hygiene training are proactive and effective measures against metal particle contamination.
Lauren Togonon Arayan,Alisha Wehdnesday Bernardo Reyes,Huynh Tan Hop,Huy Tran Xuan,Eun Jin Baek,Suk Kim,Hong Hee Chang,Han Sul Yang 한국예방수의학회(구 한국수의공중보건학회) 2017 예방수의학회지 Vol.42 No.2
This study evaluated the antimicrobial efficacy of different concentrations of ozonated water with organic matter, fetal bovine serum, at different concentrations and incubation times with bacteria. In the absence of organic matter, total eradication of up to 5 log of Escherichia (E.) coli was achieved, however, interference by organic matter led to inefficiency of ozonated water as a disinfecting agent. In addition, diminishing antimicrobial effects at higher temperatures, even in the absence of organic matter, were also demonstrated. These findings indicate that ozonated water will be a safe and effective disinfectant agent that could be useful in meat processing, especially an intestine processing, in Korean slaughter houses.
Seroprevalence of the bovine leukemia virus among Korean native cattle in South Korea
Han-Ul Kim,,Eun-Yong Lee,Kyoung-Ki Lee,Seong-Hee Kim,Bo-Youn Moon,Byung-Jae So,Yeon-Hee Kim 한국예방수의학회(구 한국수의공중보건학회) 2017 예방수의학회지 Vol.42 No.1
Bovine leukemia virus (BLV) is the causative agent of enzootic bovine leukosis. This study was conducted to clarify the seroprevalence of BLV in the Republic of Korea. Blood samples were obtained from Korean native cattle farms in all provinces of South Korea except Jeju. A commercial indirect enzyme-linked immunosorbent assay with 4,498 samples to detect antibodies against BLV was conducted. The results revealed that the prevalence of BLV was dependent upon age, with increasing prevalence among cattle occurring until they were 5 years old. The highest seroprevalence in cattle was observed in Chungnam (29.6%) and the lowest was observed in Jeonnam (2.6%). The mean overall prevalence for BLV antibodies in the survey was 10.2%, indicating that BLV is widespread nationwide.
( Yang Ho Jang ),( Gwangjick Lee ),( Jae Young Song ),( Hyobi Kim ),( Byung Jun Jang ),( Nong Hoon Choe ) 한국예방수의학회(구 한국수의공중보건학회) 2015 예방수의학회지 Vol.39 No.2
The efficacy of chemical disinfectants is reduced owing to the inactivation of active ingredients after dilution. This study investigated the effect of time on the efficacy of six different disinfectants, after dilution, against avian influenza virus. When used at the recommended concentration, most disinfectants showed efficacy at a high concentrations in the presence of organic materials immediately after dilution, while sodium dichloroisocyanurate-based products, after dilution, showed reduced efficacy over time at low concentrations in the absence of organic materials. Most disinfectants were neutralized by organic materials; however, this could be compensated for by increasing the product dosage. For successful decontamination in farms, disinfectants should be used at high concentrations in accordance with the manufacturers’ recommendations. Furthermore, the presence of organic materials must be taken into consideration, and diluted disinfectant solution should be prepared no more than a day before use.
Development of an automatic parturition-dystocia detection system for sows
( Suk Kim ),( Hyuck Joo Kim ),( Seung Joo Lee ),( Hong Hee Chang ) 한국예방수의학회(구 한국수의공중보건학회) 2012 예방수의학회지 Vol.36 No.4
The aims of the current study was to develop an automatic parturition-dystocia detection system based on the established criteria of our previous study for automatic detection of the first birth and dystocia in breeding pigs. In our previous work, we determined that when a first discharged object is detected from a sow that weighs more than 400g, it can be confirmed that she is already undergoing the process of farrowing. A good criterion for an automatic detecting device for determination of whether a sow is undergoing dystocia is an interval of more than 30min. In addition, because no significant differences were found among the different parities studied, we concluded that parity of breeding pigs is not a requirement for establishment of criteria for an automatic detecting device for detection of onset of farrowing and dystocia. The automatic detecting device for detection of onset of farrowing and dystocia consisted of a mat with a piezo wire sensor that measures changes of weight and a communication system that amplifies signals of the mat, detects the first birth and dystocia, and transmits through text message information on time of the first birth and dystocia to the worker`s mobile phone in real time. The performance of the automatic detecting device was tested successfully with 50 breeding pigs (Yorkshire x Landrace crossbreds) on a commercial farm. The results showed that the automatic parturition-dystocia detection system successfully detected the time of the first birth and hard labor of the 50 breeding pigs.
Evaluation of carcass yield and digestive conditions in HANWOO and pigs during feed withdrawal time
Hansung Chung,Donghoon Myeong,Seongjoon Kim,Byung-Joon Chang,NongHoon Choe 한국예방수의학회(구 한국수의공중보건학회) 2017 예방수의학회지 Vol.42 No.2
The study was conducted to investigate the effects of feed withdrawal on gastrointestinal weight, digestive condition, and carcass yield. The effects were studied in 36 HANWOO and 245 pigs. The weight of the gastrointestinal tract decreased with fasting time in both HANWOO and pigs. No significant differences in weight of HANWOO stomachs, intestinal tracts, and carcass yields were observed throughout the experimentals. Among pigs, significant differences in gastrointestinal tract weight were observed when comparing short fasting time (4 h) with long fasting time (above 12 h) (p<0.05). HANWOO and pigs showed no significant differences in carcass yield during fasting times. These results suggested that feed withdrawal for 16 and 12 hours is appropriate for HANWOO and pigs.
Eu-Tteum Kim,Son-Il Pak 한국예방수의학회(구 한국수의공중보건학회) 2017 예방수의학회지 Vol.42 No.2
In this study, we used a choropleth map to explore the spatial variation of the risk of cattle herds being bovine tuberculosis (BTB) positive in Gangwon-do in 2015. The map shows that the risk of being BTB-positive was lower in provinces located in the middle of Gangwon-do (Wonju, Youngwol, Peongchang, and Kangneung) than in other provinces. In addition, one province located in the north (Goseong) had a low risk of BTB. The estimate for the intercept of the spatial lag model was 0.66, and the spatial autocorrelation coefficient (lambda) was 0.20 (Table 1). The Moran’s I was 0.33 with p-value of 0.02. In 2015, provinces located in the North West (Hwacheon) and East (Donghae) of Gangwon-do had a higher BTB risk. We identified some specific provinces at low BTB-positive risk, information that may prove useful for control of BTB in the study area.