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도축장 출하 직장협착 돼지에서 분리된 살모넬라균 혈청형 및 항생제 감수성
Jiyeon Kim,Jinju Gwak,Doori Seo,Jaegi Lee,Daewoong Lim,Hana Kim,Jiyeong Park,Jongwoog Choi,Byeongcheol Yoon 한국동물위생학회 2023 韓國家畜衛生學會誌 Vol.46 No.2
From November 2021 to October 2022, 151 pigs were discarded due to the suspected salmonellosis, when assessed by antemortem inspection at slaughterhouses in Gwangju. Among them, 85 cases shown with the rectal stricture were confirmed to be infected with Salmonella spp, when assessed by postmortem inspection and Salmonella -oriented culture in the laboratory, accounting for 56.3% of the carcass discard cases. Salmonella spp. were isolated in 58 cases (68.2%) out of 85 total discard cases. As for serotyping of the Salmonella isolates, 28 cases (48.3%) belonged to serogroup B and 28 cases (48.3%) belonged to serogroup C, those were the most frequent isolates, and 2 cases (3.4%) belonged to serogroup E. The most prevalent serotype was Rissen (39.7%), followed by I4,[5],12:i:- (37.9%), Derby (8.6%), Bareilly (5.2%), Infantis (3.4%), Give (3.4%), and Typhimurium (1.7%). The 58 isolates of salmonellae showed resistance to tetracycline (63.8%), chloramphenicol (56.9%), ampicillin (53.4%), and ampicillin-sulbactam (51.7%). S . Rissen showed resistance to chloramphenicol (82.6%), ampicillin (52.2%), ampicillin-sulbactam (52.2%), and tetracyclin (47.8%). S . I4,[5],12:i:- was resistant to tetracycline (90.9%), ampicillin (81.8%), ampicillin-sulbactam (77.3%), and chloramphenicol (59.1%). Among the isoates, S . Bareilly (3 strains), S . Infantis (2 strains), S . Give (2 strains), S . Rissen (3 strains), and S . I4,[5],12:i:- (1 strain) showed no resistance to the tested antimicrobials. As for the prevalence of the antibiotic resistance pattern, AM-SAM-TE-C was the most common, which was shown in 15.5% of S . Rissen. At second, the resistance pattern was occurred as AMSAM— TE (12.1%) and AM-SAM-CF-CZ-FOX-CTX-NA-TE-C (12.1%), respectively in the case of S . I4,[5],12:i:-.
광주지역 내 유통 중인 반려동물 사료·간식의 미생물 오염도 및 식품첨가물 사용실태 조사
임대웅,김지연,안아진,박지영,정하진,곽진주,서두리,이재기,장미선,지태경,김용환,Lim, Daewoong,Kim, Ji Yeon,An, Ahjin,Park, Jiyeong,Jeong, Hajin,Gwak, Jinju,Seo, Doori,Lee, Jae Gi,Jang, Miseon,Ji, Taekyeong,Kim, Yonghwan 한국동물위생학회 2022 韓國家畜衛生學會誌 Vol.45 No.3
This study was conducted for safety evaluation on 130 pet food products, which are distributed in Gwangju, South Korea. The microbial contamination part and the usage of food additives part were mainly investigated. The five microorganisms that we tested were total viable cell counts (TVC), Coliforms, Salmonella spp., Campylobacter spp., pathogenic Escherichia coli and there were 15 products that exceed the microbial criteria or detected food poisoning bacteria. Specifically, Coliforms (13 products, 10%), TVC (9 products, 6.9%), Salmonella spp. (2 products, 1.5%), and E. coli (2 products, 1.5%) were followed. On the other hand, food additives such as preservatives, antioxidants and sodium nitrite were detected in 61 products. Among the preservatives, sorbic acid and benzoic acid were detected in 58 (44.6%) products. In antioxidants, Butylated hydroxytoluene (BHT) was detected in 3 (2.3%) products. In addition, preservatives and antioxidants were detected in 8 of 20 products labeled as 'additive-free'. Microbial contamination tended to occur mainly in small-scale individual homemade feed stores, while food additives were all detected in pet shops and supermarkets. Currently, the criteria for microorganisms and food additives for pet foods are insufficient in Korea. So, it is necessary to establish detailed feed standards and specifications for companion animals.
정하진 ( Hajin Jeong ),김지연 ( Jiyeon Kim ),최인수 ( Insu Choi ),성창민 ( Changmin Seong ),박자윤 ( Jayun Park ),박지영 ( Jiyeong Park ),안아진 ( Ahjin An ),곽진주 ( Jinju Gwak ),장미선 ( Miseon Jang ),서계원 ( Kyewon Seo ),김용환 ( 한국동물위생학회(구 한국가축위생학회) 2020 韓國家畜衛生學會誌 Vol.43 No.1
Hepatitis E Virus (HEV) infection is a worldwide disease and the primary cause of acute viral hepatitis in the world. It can be isolated from many different species including pigs. HEV is a zoonotic pathogen and foodborne disease. The main animal reservoir is domestic pigs. It is usually asymptomatic in pig but it is a public health concern, causing acute hepatitis in humans of varying severity. This study focused on the presence of HEV in pig and pork product. One hundred feces and one hundred fifty serum samples were randomly collected from pigs in slaughterhouses in Gwangju from November in 2018 to February in 2020. In addtion, seventy-five pork products were collected from markets in Gwangju. Feces and pork product samples were examined for the presence of HEV RNA using an reverse-transcription realtime PCR (RT-qPCR) assay. Serum samples were tested for the presence of HEV-specific IgG antibodies using Enzyme-linked immunosorbent assay (ELISA). HEV antigen and antibody positive rates were 3.0% (3/100) and 19.3% (29/150), respectively, in Gwangju and nearby areas such as Jeonnam and Jeonbuk. However, HEV antigen was not detected from any of pork product in this study. In conclusion, the prevalence of HEV should be continuously monitored because HEV was sporadically detected in Gwangju and nearby areas.