Abstract: These days abattoirs' hygiene of Korea is regulated by Hazzard Analysis Critical Control Point (HACCP). Although 20 years have been left since first HACCP was adjusted in Korea, 12% of abattoirs got inconsistence on evaluations. Food poisoning caused by bacteria feces like pathogenic Escherichia coli and Salmonella has not decreased. These bacteria on meat crosscontaminate at the abattoir. Therefore, field verification of abattoir's critical control point (CCP) and experiments to find alternative ways of the CCP were conducted. The aerobic bacteria were measured before and after high-pressure water based washing process set as CCP in most abattoirs. Four parts of cattle carcasses were selected to apply sponge-swab method. The effects were < 1 log reduction which is not significant. Lactic acid (LC), chlorine dioxide (ClO2 ) and slightly acidic electrolyzed water (SAEW) were used to measure the effect of reducing bacteria on beef by the different time. LC has 1.24–2.02 log reduction for aerobic bacteria. ClO2 has 1.44–1.96 log reduction for aerobic bacteria. SAEW has 1.1–1.91 log reduction for aerobic bacteria. There was significant difference according to concentrations (p < 0.05). This study presents legitimacy for hygiene improvement of CCP by field verification. In addition, chemical disinfectants that can be mechanically applied have better reduction effects of high-pressure washing.

In the livestock field, human body sterilizer is one of the methods used to prevent the spread of contagious animal diseases. Disinfection methods include spraying disinfectants, irradiating ultraviolet rays, and generating anions using photocatalysts; however, their effectiveness remains to be clarified. Therefore, in this study, we aimed to verify the pathogen-killing efficacy of the human body sterilizer and propose improvements. Experiments were conducted using a disinfectant spraying model and an ultraviolet single and ultraviolet-photocatalyst composite model. In the bactericidal experiment using Salmonella Typhimurium, the killing effect recorded in both hard and organic conditions did not exceed the standard value. The disinfectant spraying model showed a relatively high effect on the mannequin’s shoulders and arms. Meanwhile, in the virucidal experiment using low pathogenic avian influenza, the killing effect observed in both hard and organic conditions did not exceed the standard value, and no significant difference was observed between the models by site. Notably, the disinfectant spraying model showed a tendency to increase pathogen reduction with increasing exposure time in both bacterial and viral experiments. Human body sterilizer has limitations such as damage from drug exposure, short periods of physical exposure, and the lack of their own disinfection function. Given the current challenges in manufacturing an ideal human body sterilizer, supplementary measures should be implemented to prevent the spread of pathogens by farm entrants. These measures include efficiently utilizing shoe disinfectants, which are crucial in pathogen prevention, and providing disposable clothing.

In the livestock field, human body sterilizer is one of the methods used to prevent the spread of contagious animal diseases. Disinfection methods include spraying disinfectants, irradiating ultraviolet rays, and generating anions using photocatalysts; however, their effectiveness remains to be clarified. Therefore, in this study, we aimed to verify the pathogen-killing efficacy of the human body sterilizer and propose improvements. Experiments were conducted using a disinfectant spraying model and an ultraviolet single and ultraviolet-photocatalyst composite model. In the bactericidal experiment using Salmonella Typhimurium, the killing effect recorded in both hard and organic conditions did not exceed the standard value. The disinfectant spraying model showed a relatively high effect on the mannequin’s shoulders and arms. Meanwhile, in the virucidal experiment using low pathogenic avian influenza, the killing effect observed in both hard and organic conditions did not exceed the standard value, and no significant difference was observed between the models by site. Notably, the disinfectant spraying model showed a tendency to increase pathogen reduction with increasing exposure time in both bacterial and viral experiments. Human body sterilizer has limitations such as damage from drug exposure, short periods of physical exposure, and the lack of their own disinfection function. Given the current challenges in manufacturing an ideal human body sterilizer, supplementary measures should be implemented to prevent the spread of pathogens by farm entrants. These measures include efficiently utilizing shoe disinfectants, which are crucial in pathogen prevention, and providing disposable clothing.

In the livestock field, human body sterilizer is one of the methods used to prevent the spread of contagious animal diseases. Disinfection methods include spraying disinfectants, irradiating ultraviolet rays, and generating anions using photocatalysts; however, their effectiveness remains to be clarified. Therefore, in this study, we aimed to verify the pathogen-killing efficacy of the human body sterilizer and propose improvements. Experiments were conducted using a disinfectant spraying model and an ultraviolet single and ultraviolet-photocatalyst composite model. In the bactericidal experiment using Salmonella Typhimurium, the killing effect recorded in both hard and organic conditions did not exceed the standard value. The disinfectant spraying model showed a relatively high effect on the mannequin’s shoulders and arms. Meanwhile, in the virucidal experiment using low pathogenic avian influenza, the killing effect observed in both hard and organic conditions did not exceed the standard value, and no significant difference was observed between the models by site. Notably, the disinfectant spraying model showed a tendency to increase pathogen reduction with increasing exposure time in both bacterial and viral experiments. Human body sterilizer has limitations such as damage from drug exposure, short periods of physical exposure, and the lack of their own disinfection function. Given the current challenges in manufacturing an ideal human body sterilizer, supplementary measures should be implemented to prevent the spread of pathogens by farm entrants. These measures include efficiently utilizing shoe disinfectants, which are crucial in pathogen prevention, and providing disposable clothing.

In the livestock field, human body sterilizer is one of the methods used to prevent the spread of contagious animal diseases. Disinfection methods include spraying disinfectants, irradiating ultraviolet rays, and generating anions using photocatalysts; however, their effectiveness remains to be clarified. Therefore, in this study, we aimed to verify the pathogen-killing efficacy of the human body sterilizer and propose improvements. Experiments were conducted using a disinfectant spraying model and an ultraviolet single and ultraviolet-photocatalyst composite model. In the bactericidal experiment using Salmonella Typhimurium, the killing effect recorded in both hard and organic conditions did not exceed the standard value. The disinfectant spraying model showed a relatively high effect on the mannequin’s shoulders and arms. Meanwhile, in the virucidal experiment using low pathogenic avian influenza, the killing effect observed in both hard and organic conditions did not exceed the standard value, and no significant difference was observed between the models by site. Notably, the disinfectant spraying model showed a tendency to increase pathogen reduction with increasing exposure time in both bacterial and viral experiments. Human body sterilizer has limitations such as damage from drug exposure, short periods of physical exposure, and the lack of their own disinfection function. Given the current challenges in manufacturing an ideal human body sterilizer, supplementary measures should be implemented to prevent the spread of pathogens by farm entrants. These measures include efficiently utilizing shoe disinfectants, which are crucial in pathogen prevention, and providing disposable clothing.

In the livestock field, human body sterilizer is one of the methods used to prevent the spread of contagious animal diseases. Disinfection methods include spraying disinfectants, irradiating ultraviolet rays, and generating anions using photocatalysts; however, their effectiveness remains to be clarified. Therefore, in this study, we aimed to verify the pathogen-killing efficacy of the human body sterilizer and propose improvements. Experiments were conducted using a disinfectant spraying model and an ultraviolet single and ultraviolet-photocatalyst composite model. In the bactericidal experiment using Salmonella Typhimurium, the killing effect recorded in both hard and organic conditions did not exceed the standard value. The disinfectant spraying model showed a relatively high effect on the mannequin’s shoulders and arms. Meanwhile, in the virucidal experiment using low pathogenic avian influenza, the killing effect observed in both hard and organic conditions did not exceed the standard value, and no significant difference was observed between the models by site. Notably, the disinfectant spraying model showed a tendency to increase pathogen reduction with increasing exposure time in both bacterial and viral experiments. Human body sterilizer has limitations such as damage from drug exposure, short periods of physical exposure, and the lack of their own disinfection function. Given the current challenges in manufacturing an ideal human body sterilizer, supplementary measures should be implemented to prevent the spread of pathogens by farm entrants. These measures include efficiently utilizing shoe disinfectants, which are crucial in pathogen prevention, and providing disposable clothing.

This study was performed to radiographically examine the prevalence of aspiration sites and to evaluate their atomical correlation with the bronchial pattens. Ten healthy beagle dogs were repeatedly radiographed, at weekly intervals, in the left and right lateral, ventrodorsal (VD) and dorsoventral (DV) positions. Three mililiters of iohexol distilled with same volume of saline was infused into the tracheal inlet. Which lung lobe was aspirated was decided upon by the presence of a significant alveolar pattern due to the contrast medium. Alveolar patterns were identified at the left (100%) and right cranial lung lobes (77%) with the dogs in dependant lateral recumbency, at the right caudal lung lobe (71%) with the dogs in VD recumbency and at the right middle lung lobe (59%) with the dogs in DV recumbency, respectively. The anatomical correlation was evaluated by performing computed tomography. The right principal bronchus (165.8 +/- 1.6 degrees) was more straightly bifurcated than was the left principal bronchus (142.7 +/- 1.8 degrees, p < 0.01). In VD position, the right side lung had a greater opertunity to become aspirated. The ventrally positioned right middle lobar bronchial origin was more easily to be aspirated the other laterally positioned ones. We think that these anatomical characteristics can be one of the causes for aspiration pneumonia to occur more frequently in the right side lung.
Animals ; Contrast Media/chemistry ; Dog Diseases/pathology/*radiography ; Dogs ; Female ; Iohexol/chemistry ; Male ; Pneumonia, Aspiration/pathology/radiography/*veterinary ; Tomography, X-Ray Computed/veterinary

In Korea, groundwater is main water source in livestock farms. Most dairy and cattle farms have constructed their own wells for human drinking and livestock farming. However, these private residential wells have not been controlled by government and also there was scant study about livestock drinking water quality. Therefore this study was to monitor of the livestock farms' groundwater quality in Korea. Water samples were collected at 123 dairy and cattle farms and were analysed forty six substances with quality standard for drinking water approved by the Minister of Environment. Seventy eight (63.4%) of 123 samples failed to drinking water stand a test. The most frequent contaminants were nitrate-nitrogen and microbial. 22.8% (n = 28) of samples showed nitrate-N concentration of higher than 10 mg/L meant that can't be used drinking water for human and the Nitrate-N concentration analysed in the range of 0.2 to 61.2 mg/L. All of 78 failed to drinking samples had microbial problems, especially 5.7% (n = 7) of samples indicated water could be contaminated by feces. Other contaminants detected were zinc and evaporation residue. Especially detected zinc concentration (32 mg/L) was about ten times higher than standard of zinc (3 mg/L). Regression analysis indicated that groundwater pH did not influence to nitrate-N concentration but the hardness and chloride could affect to nitrate-N concentration in the groundwater. Most livestock farms were adjacent to crop farmland in Korea. This could cause contamination of groundwater with nitrate-N and pesticide that could accumulate livestock product. Moreover Heavy metal such as zinc and copper could be released from a corrosive plated water pipe in livestock farm. Put together, Korea livestock system is indoor, not pasture-based, hence livestock could be exposed to potential contaminated water consistently. Therefore on the basis of these data, appropriate livestock drinking water quality standards should be prepared to keep livestock healthy and their product safe. Further, livestock drinking water quality should be monitored continuously in suitable livestock drinking water standards.
Animals ; Cattle ; Copper ; Drinking ; Drinking Water ; Feces ; Groundwater ; Hardness ; Humans ; Hydrogen-Ion Concentration ; Korea ; Livestock ; Organothiophosphorus Compounds ; Water ; Zinc

This study was conducted to investigate the prevalence and antimicrobial resistance of Salmonella spp. and Escherichia (E.) coli isolated from ducks in Korea. A total of 400 cecal content samples were collected from 40 duck farms in Korea. Isolated Salmonella spp. and E. coli strains were 83 and 364 of the 400 cecal samples, respectively. The most prevalent serotype among the 83 Salmonella isolates was Salmonella Typhimurium (51 isolates: 61.45%). Resistance to the tested antimicrobial agents by Salmonella isolates was low except for erythromycin, while the resistance of the E. coli isolates to the other tested antimicrobial agents was high and 90.9% (331/364) of E. coli isolates showed multiantimicrobial resistance. Antimicrobial resistance in duck zoonotic pathogens should be of concern to the Korean duck industry, as these pathogens exhibit a high rate of antimicrobial resistance and pose a potential hazard to public health.
Agriculture ; Anti-Infective Agents ; Ducks* ; Erythromycin ; Escherichia coli* ; Escherichia* ; Korea* ; Prevalence* ; Public Health ; Salmonella typhimurium ; Salmonella* ; Serogroup

Background: A nationwide outbreak of foot-and-mouth disease (FMD) in South Korea caused massive economic losses in 2010. Since then, the Animal and Plant Quarantine Agency (QIA) has enhanced disinfection systems regarding livestock to prevent horizontal transmission of FMD and Avian influenza (AI). Although the amount of disinfectant used continues to increase, cases of FMD and AI have been occurring annually in Korea, except 2012 and 2013. Objectives: This study measured the concentration of the disinfectant to determine why it failed to remove the horizontal transmission despite increased disinfectant use. Methods: Surveys were conducted from February to May 2017, collecting 348 samples from disinfection systems. The samples were analyzed using the Standards of Animal Health Products analysis methods from QIA. Results: Twenty-three facilities used inappropriate or non-approved disinfectants. Nearly all sampled livestock farms and facilities—93.9%—did not properly adjust the disinfectant concentration. The percentage using low concentrations, or where no effective substance was detected, was 46.9%. Furthermore, 13 samples from the official disinfection station did not use effective disinfectant, and—among 72 samples from the disinfection station—88.89% were considered inappropriate concentration, according to the foot-and-mouth disease virus guidelines; considering the AIV guideline, 73.61% were inappropriate concentrations. Inappropriate concentration samples on automatic (90.00%) and semi-automatic (90.90%) disinfection systems showed no significant difference from manual methods (88.24%). Despite this study being conducted during the crisis level, most disinfectants were used inappropriately. Conclusions This may partially explain why horizontal transmission of FMD and AI cannot be effectively prevented despite extensive disinfectant use.