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한국동물위생학회> 한국가축위생학회지 (KOJVS)

한국가축위생학회지 (KOJVS) update

Korean Journal of Veterinary Service

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수록정보
수록범위 : 13권1호(1990)~44권3호(2021) |수록논문 수 : 1,161
한국가축위생학회지 (KOJVS)
44권3호(2021년 09월) 수록논문
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1세종지역 유통 식육 중 벤지미다졸계 구충제 잔류실태 조사

저자 : 김태평 ( Tae Pyoung Kim ) , 김태원 ( Tae Won Kim ) , 이종훈 ( Jong Hoon Lee ) , 김문배 ( Mun-bae Kim )

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 125-131 (7 pages)

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Benzimidazole is an widely used anthelmintics in livestock clinics. The aim of present study was to investigate benzimidazole residues in the meat in Sejong City. A total of 338 samples of meat(beef 287, pork 37, chicken 14) were selected from the laboratory meat(Korean beef genetic test, hygiene test) supplied to school in Sejong City. Representative benzimidazole class drug such as thiabendazole, 2-amino albendazole sulfone, fenbendazole, oxfendazole, and oxfendazole sulfone were monitored in samples by using lc-ms/ms and the analysis was preformed based on the Korea Food Code guideline. Limit of quantitation (LOQ) was ranged from 0.56 to 3.02 ppb for target drugs and the accuracy was within the acceptance criteria. Among the sample analyzed only one case, the pork meat was found to have drug levels that exceed LOQ. However, the overall residue concentration was 2.17 ppb, which was lower than the maximum residue levels (100 ppb).

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2젖소 유방염에서 분리한 Pseudomonas spp.의 분포 및 항생제 내성 비교

저자 : 강혜정 ( Hye Jeong Kang ) , 김하영 ( Ha-young Kim ) , 홍세림 ( Serim Hong ) , 박다솜 ( Dasom Park ) , 윤순식 ( Soon-seek Yoon ) , 문진산 ( Jin-san Moon )

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 133-140 (8 pages)

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This study was aimed to investigate the prevalence and antimicrobial resistance of Pseudomonas spp. isolated from bovine mastitis milk samples. A total of 50 (4.9%) Pseudomonas spp. was isolated from 1,023 samples, those collected between 2018 and 2021, derived from 110 dairy farms. The prevalence of the identified species of Pseudomonas isolates was as follows; P. aeruginosa (70.0%), P. fluorescens (14.0%), P. putida (10.0%), P. fragi (4.0%), and P. chlororaphis (2.0%). Most of somatic cell counts in the quarter milk carrying Pseudomonas spp. were less than 3,000,000 cell/ml (90.0%). The isolates of Pseudomonas spp. showed high susceptibility to cefepime (98.0%), ciprofloxacin (98.0%), ceftazidime (96.0%), and colistin (96.0%). The rate of antibiotic resistance in the isolates was highest to ceftiofur (92.0%), followed by the resistance rate to chloramphenicol (86.0%) and trimethoprim/ sulphamethoxazole (80.0%). In addition, there is a remarkable difference in antimicrobial resistance pattern among Pseudomonas species. P. aeruginosa and P. putida showed a similar resistance pattern, whereas P. fluorescens showed exceptionally lower resistance to trimethoprim/sulphamethoxazole and chloramphenicol than that of the other species. This study showed that prevalence of Pseudomonas spp. other than P. aeruginosa were 30.0% in bovine mastitis milk, and the occurrence rate of antibiotic resistance were similar or higher level, compared with the previous reports on the mastitis- derived Pseudomonas spp. isolated in Korea.

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3Guanosine 5'-monophosphate 킬레이트 칼슘 및 철 사료 첨가 제 급이 산란계의 Salmonella Gallinarum 인공감염에 대한 면역 반응

저자 : 허수정 ( Sujeong Heo ) , 고홍범 ( Hongbum Koh )

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 141-148 (8 pages)

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The objective of this research was to evaluate the immune response to Salmonella Gallinarum experi-mentally infected layers fed with Guanosine 5'-monophosphate-chelated calcium and iron feed addi-tives. Hy-Line brown, 34 week-olds layers were assigned to 3 groups; Group 1: basal diet feed, Group 2 (CaFe-GMP): basal diet feed mixed with chelated calcium and iron, and Group 3 (Fe-OCHT): basal diet feed mixed with chitosan for 4 weeks. There were challenged with 1.0×108 CFU/mL of the cultured Salmonella Gallinarum (SG) by oral administration on 28th feeding days. After SG challenge, Flow cytometric profiles showed that the CD4+/CD8+ T lymphocyte activation of Group 2 was much higher than Group 1 and Group 3 (P<0.05). In addition, the levels of interleukin-2 (13.37 mg/dl) and interferon-γ (2.35 mg/dl) in Group 2 were higher than Group 1 and Group 2. Populations of Lactic acid bacteria (3.5×1010 CFU/g) from cecum was highest observed in group 2. Re-isolation of SG from cecum in group 2 (8×105 CFU/g) was lower than group 1 (1.83×1010 CFU/g). The result of this study demonstrated that CaFe-GMP feed additive may be one of the potential candidates to control salmo-nellosis and functional feeds in layers.

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4Bacteriophage MS2를 이용한 소독제 효력시험 확립에 관한 연구

저자 : 이채홍 ( Chae Hong Rhee ) , 김수희 ( Soohee Kim ) , 한복희 ( Bokhee Han ) , 김영욱 ( Young-wook Kim ) , 허문 ( Moon Her ) , 정우석 ( Wooseog Jeong )

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 149-155 (7 pages)

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In virucidal efficacy testing, the chemical inactivation cannot be determined for all viruses due to the difficulties or the inability to culture sufficiently or the risk of exposure to the viruses. Therefore, disinfectants against these viruses could be evaluated by different methods and surrogate viruses are used as alternative. In this study we developed a method for efficacy testing of veterinary disinfectants using one of the candidate surrogate viruses, bacteriophage MS2, as part of the research on the selection of surrogate viruses for efficiency of efficacy testing of veterinary disinfectants. This method is based on the Animal and Plant Quarantine Agency (APQA) guidelines for efficacy testing of veterinary disinfectants. Bacteriophage and disinfectant are reacted in suspension in accordance with the APQA guidelines and then a newly established double agar layer method is applied for the efficacy test. The double agar layer method is summarized as follows: 1) The bottom agar with 1.5% agar is boiled and cooled before poured into petri dishes at volume of 20 mL, and dried under bio-logical safety cabinet. 2) The top agar with 0.7% agar is boiled and kept at 50℃ before E. coli culture was seeded. 3) The serially diluted bacteriophage MS2-disinfectant mixtures 0.05 mL and E. coli host 0.01 mL (OD600 0.2~0.3) are mixed with 5 mL of top agar and incubate them at 50℃ for 5 min for reaction. 4) The resulting mixture is poured over top of a bottom agar plate and rocked sufficiently to ensure that the top agar covers the entire surface of the bottom agar. 5) The double agar layer is then placed under biological safety cabinet to allow the agar layer to solidify and subsequently incubated at 37℃ for 24 hr. 6) Following incubation, the plates may be inspected for plaques and record results.

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5마보플록삭신 제품별 접종이 비육돈 목심 부위 이상육 발생에 미치는 효과

저자 : 임창원 ( Chang-won Im ) , 이완규 ( Wan-kyu Lee )

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 157-162 (6 pages)

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The abnormal meat could caused by abscess, fibrosis and granuloma in the region of the neck by adverse effect of vaccination or antibiotic injection under swine practice. In this study, the incidence of abnormal meat due to antibiotics injection was investigated using marbofloxacin from different manufacturers. To evaluate the incidence of abnormal meat via antibiotic treatment, a total of 440 pigs with the age of 140~150 days old were selected. Two hundred of pigs were assigned as a control group and 2 mL of saline was inoculated daily for three days. Two hundred forty of pigs were used as treatment group and further divided into 6 groups, consisting of 16% of original marbofloxacin treated, 10% of original marbofloxacin treated and 4 different kinds of generic marbofloxacin treated groups respectively. When test animals were slaughtered, incidence, type and size of induced abnormal meat were recorded. In the result of this study, statistical analysis found significantly lower incidence of abnormal meat formation was in 16% original marbofloxacin treated groups compared to the other tested groups (P<0.05). In the summary, antibiotic treatment could produce abnormal meat formation but the 16% of original marbofloxacin had the most minimal abnormal meat formation effect.

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6Comparison of clinical diagnostic performance between commercial RRT-LAMP and RT-qPCR assays for SARS-CoV-2 detection

저자 : Hye-ryung Kim , Jonghyun Park , Hyung-soo Han , Yu-kyung Kim , Hyo-sung Jeon , Seung-chun Park , Choi-kyu Park

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 163-168 (6 pages)

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The rapid and reliable detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) plays a key role in isolating infected patients and preventing further viral transmission. In this study, we evaluated the clinical diagnostic performances of a commercial real-time reverse transcription loop-mediated isothermal amplification (RRT-LAMP) assay (Isopollo® COVID-2 assay, M-monitor, Daegu, Korea) using eighty COVID-19 suspected clinical samples and compared these with the results of a commercial real-time reverse transcription polymerase chain reaction (RT-qPCR) assay (AllplexTM 2019-nCoV rRT-QPCR Assay, SeeGene, Seoul, Korea). The results of the RRT-LAMP assay targeting the N or RdRp gene of SARS-CoV-2 showed perfect agreement with the RT-qPCR assay results in terms of detection. Furthermore, the RRT-LAMP assay was completed in just within a 20-min reaction time, which is significantly faster than about the 2 h currently required for the RT- qPCR assay, thus enabling prompt decision making regarding the isolation of infected patients. The RRT-LAMP assay will be a valuable tool for rapid, sensitive, and specific detection of SARS-CoV-2 in human or unexpected animal clinical cases.

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7봉독의 젖소 유방염 유래 그람 양성 및 음성 세균별 항균효과 분석

저자 : 정숙한 ( Sukhan Jung ) , 오상익 ( Sang-ik Oh ) , 이한규 ( Han-gyu Lee ) , 정영훈 ( Young-hun Jung ) , 허태영 ( Tai-young Hur ) , 한상미 ( Sangmi Han ) , 백귀정 ( Kui-jeong Baek ) , 조아라 ( Ara Cho )

발행기관 : 한국동물위생학회 간행물 : 한국가축위생학회지 (KOJVS) 44권 3호 발행 연도 : 2021 페이지 : pp. 169-174 (6 pages)

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Mastitis is an inflammatory condition of the mammary gland, most often caused by bacterial infections, resulting in significant economic losses to the dairy industry. Antimicrobial resistance has been of great concern because of the extensive clinical use of antibiotics. For this reason, the development of new compounds as an alternative treatment to bovine mastitis is needed. Bee venom has been widely used as an oriental treatment for several inflammatory diseases and bacterial infections. The aim of the present study was to evaluate the antimicrobial activity of bee venom on bacteria isolated from bovine mastitis. A total of 107 isolates from bovine mastitic milk samples collected in 2019 and 2020 in Jeonbuk province. All bacterial isolates were tested for susceptibility to bee venom of the honey bee (Apis mellifera). In order to obtain comprehensive antibacterial activities of the bee venom, we measured the minimal inhibitory concentration (MIC) of the bee venom against bacterial strains. Bee venom showed significant inhibition of bacterial growth of Gram-negative bacteria Citrobacter spp., Escherchia coli, Klebsiella spp., Pseudomonas spp., Serratia spp. and Raoultella with MIC values of 96, 81, 72, 230, and 85 μg/mL, respectively, and Gram-positive bacterial Enterococcus spp., Staphylococcus spp. and Streptococcus spp. with MIC values of 29, 21 and 16 μg/mL, respectively. The results indicated that the MIC values were different depending on the bacterial strains, and those of Gram-positive bacteria were lower than those of Gram-negative bacteria for bee venom. These findings suggested that bee venom could be an effective antimicrobial treatment for bovine mastitis; however, further research is necessary to evaluate the mechanism underlying the antimicrobial action, its effectiveness/safety in vivo and effective application for therapeutic use.

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