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Occurrence of aflatoxin M₁ in milk determined by HPLC with derivatization method in Korea (1999-2000)
2007
Kang, H.G. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: kanghg@nvrqs.go.kr | Cho, J.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea)
In this study, the levels of aflatoxin M₁(AFM₁) in milk were determined by HPLC with derivatization method. Milk samples were purified using C∧18 disposable cartridge followed by derivatization with trifluoroacetic acid and analysed using HPLC with fluorescence detection. The recoveries of AFM₁ from milk samples added AFM₁ at a level of 0.025~0.1 ng/ml were 94.7~98.0% with detection limit of 0.009 ng/ml. The amounts of AFM₁ were determined below 0.05 ng/ml for all tested samples of commercial milk collected in 1999 and 2000.
Показать больше [+] Меньше [-]Development of Ultra-rapid Multiplex Real-time PCR for the Detection of Genes from Avian Influenza Virus subtype H5N1
2007
Kim, E.H. (Kyonggi University, Suwon, Republic of Korea) | Lee, D.W. (Kyonggi University, Suwon, Republic of Korea) | Han, S.H. (Kyonggi University, Suwon, Republic of Korea) | Lim, Y.K. (Cheju National University, Jeju, Republic of Korea) | Yoon, B.S. (Kyonggi University, Suwon, Republic of Korea), E-mail: bsyoon@kyonggi.ac.kr
Cause of high lethality and dissemination to human being, new development of rapid method for the detection of highly pathogenic Avian Influenza Virus (AIV) is still necessary. For the detection of AIV subtype H5N1, typical pathogenic AIV, new method to confirm sub-typing of this virus is also needed. For the purpose of ultra-rapid detection and sub-typing of hemagglutinin and neuraminidase of AIV, this study was planned. As the results we could demonstrate an ultra-rapid multiplex real-time PCR (URMRT-PCR) for the detection of AIV.
Показать больше [+] Меньше [-]Sample size for serological surveillance of Aujeszky's disease in Korea
2007
Kim, E.T. (Kangwon National University, Chuncheon, Republic of Korea) | Pak, S.I. (Kangwon National University, Chuncheon, Republic of Korea), E-mail: paksi@kangwon.ac.kr | Park, C.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Kweon, C.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea)
Serological surveillance programs in animal populations are becoming increasingly important to estimate prevalence of a specific disease and subsequently to document disease-free status in a region or a country. For these purposes, the programs need to be based on both theoretical and economical aspects from the designing phase. From Aujeszky's disease (AD)-eradication program point of view, group of animals (aggregates, herds) not individual animal is the more important sampling unit of concern.
Показать больше [+] Меньше [-]Hemagglutinating encephalomyelitis virus infection in Korean suckling pigs
2007
Kim, E.M. (Seoul National University, Seoul, Republic of Korea) | Kim, H.K. (Seoul National University, Seoul, Republic of Korea) | Park, S.J. (Seoul National University, Seoul, Republic of Korea) | Lee, C.S. (Green Cross Veterinary Products, Yongin, Republic of Korea) | Luo, Yuzi (Seoul National University, Seoul, Republic of Korea) | Moon, H.J. (Seoul National University, Seoul, Republic of Korea) | Yang, J.S. (Seoul National University, Seoul, Republic of Korea) | Park, B.K. (Seoul National University, Seoul, Republic of Korea), E-mail: parkx026@snu.ac.kr
From January to June 2006, 54 suckling pigs had been submitted in virology lab., College of Veterinary Medicine, Seoul National University. All pigs had suffered from various symptoms such as respiratory, sign, enteric signs, neurologic signs, etc. Among 54 pigs, 24 pigs (44.4%) were positive for porcine hemagglutinating encephalomyelitis virus (HEV) through reverse transcription-nested polymerase chain reaction. According to this result, HEV infections seemed to be prevalent and widespread in Korean swine farms, and the infection is associated with respiratory signs and neurologic signs more than enteric signs.
Показать больше [+] Меньше [-]Risk assessment of the potential for a classical swine fever outbreak in Korea based on a herd immunity
2007
Lee, C.H. (Kyungpook National University, Daegu, Republic of Korea) | Yoon, H.C. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Park, C.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: parkck@nvrqs.go.kr
The risk of an outbreak of classical swine fever (CSF) was evaluated in relation to the vaccination and seroprevalence of antibodies. Blood samples were collected from 60 piggeries throughout Korea and information regarding CSF vaccination habits was also obtained via in-person interviews with pig farmers. The results of the survey indicated that 51 out of 60 farms were regularly performing CSF vaccinations in reproductive herds. Farmers preferred to vaccinate their reproductive pigs before weaning (41 farms) than on (9 farms) or after weaning (1 farm).
Показать больше [+] Меньше [-]Histopathological diagnosis of avian tuberculosis and aspergillosis in a Snow goose
2007
Yhee, J.Y. (Konkuk University, Seoul, Republic of Korea) | Kim, K.T. (Daejeon Zoo Land, Daejeon, Republic of Korea) | Yu, C.H. (Konkuk University, Seoul, Republic of Korea) | Kim, J.H. (Konkuk University, Seoul, Republic of Korea) | Cho, S.W. (Chungnam National University, Daejeon, Republic of Korea) | Lyoo, Y.S. (Konkuk University, Seoul, Republic of Korea) | Kim, T.J. (Konkuk University, Seoul, Republic of Korea) | Sur, J.H. (Konkuk University, Seoul, Republic of Korea), E-mail: jsur@konkuk.ac.kr
A 7-year-old, female snow goose (Anser caerulescens hyperboreus) with history of decreased activity for 2 month died in Daejeon Zoo Land in September 2006. At necropsy, granulomatous pneumonia and hepatomegaly with multiple cysts were observed. Small masses were found in the spleen. Microscopically, fibrinous pneumonia distributed in most of the lung lobe with pulmonary edema and congestion. Especially, granulomatous inflammation with numerous multinucleated giant cells was observed around the dilated bronchi.
Показать больше [+] Меньше [-]Antibacterial activity of sodium phytate, sodium pyrophosphate, and sodium tripolyphosphate against Salmonella typhimurium in meats
2007
Hue, J.J. (Chungbuk National University, Cheongju, Republic of Korea) | Baek, D.J. (Chungbuk National University, Cheongju, Republic of Korea) | Lee, Y.E. (Chungbuk National University, Cheongju, Republic of Korea) | Lee, K.N. (Chungbuk National University, Cheongju, Republic of Korea) | Nam, S.Y. (Chungbuk National University, Cheongju, Republic of Korea) | Yun, Y.W. (Chungbuk National University, Cheongju, Republic of Korea) | Jeong, J.H. (Seowon University, Cheongju, Republic of Korea) | Lee, S.H. (Seowon University, Cheongju, Republic of Korea) | Yoo, H.S. (Seoul National University, Seoul, Republic of Korea) | Lee, B.J. (Chungbuk National University, Cheongju, Republic of Korea), E-mail: beomjun@cbu.ac.kr
The approval of use of certain food-grade phosphates as food additives in a wide variety of meat products greatly stimulated research on the applications of phosphates in foods. Although phosphates have never been classified as antimicrobial agents, a number of investigators have reported that phosphates have antimicrobial activities. Phytic acid is a natural plant inositol hexaphosphate constituting 1-5% of most cereals, nuts, legumes, oil seeds, pollen, and spores. In this study, we investigated antibacterial activities of sodium phytate (SPT), sodium pyrophosphate (SPP), sodium tripolyphosphate (STPP) on Salmonella typhimurium in tryptic soy broth and in row meat media including chicken, pork and beef.
Показать больше [+] Меньше [-]Beagle dogs parentage testing by using 22 ISAG microsatellite markers
2007
Ji, H.J. (Cheju National University, Jeju, Republic of Korea) | Kim, E.H. (Cheju National University, Jeju, Republic of Korea) | Lee, K.K. (Cheju National University, Jeju, Republic of Korea) | Kang, T.Y. (Cheju National University, Jeju, Republic of Korea) | Lee, J.M. (Cheju National University, Jeju, Republic of Korea) | Shin, H.D. (SNP Genetics, Inc., Seoul, Republic of Korea) | Kim, L.H. (SNP Genetics, Inc., Seoul, Republic of Korea) | Yun, Y.M. (Cheju National University, Jeju, Republic of Korea), E-mail: dvmyun@cheju.ac.kr
The objective of the study was to establish routine parentage testing system in Beagle dogs using 22 ISAG (International Society for Animal Genetics) canine microsatellite markers (2005). Blood collections were obtained from a mother dog, 4 candidate father dogs and 3 offspring (n = 8). Genomic DNA samples were extracted from 8 Beagle dogs blood for PCR analysis. PCR products for the allele were analyzed by ABI 3130 DNA Sequencer and GeneScan (Ver 3.0) analysis and Genotyper (Ver. 2.1) software.
Показать больше [+] Меньше [-]Transvenous occlusion of patent ductus arteriosus using an embolization coil in a Maltese dog
2007
Lee, S.G. (Kangwon National University, Chuncheon, Republic of Korea) | Moon, H.S. (Kangwon National University, Chuncheon, Republic of Korea) | Choi, R. (Kangwon National University, Chuncheon, Republic of Korea) | Hyun, C.B. (Kangwon National University, Chuncheon, Republic of Korea), E-mail: hyun5188@kangwon.ac.kr
A 6-year-old female Maltese dog (body weight 2.0 kg) was referred to the Veterinary Teaching Hospital. Kangwon National University with primary complaints including exercise intolerance and heart murmur. Based on clinical and diagnostic findings including grade V/VI left basal continuous murmur, bounding femoral pulsation, left ventricular enlargement pattern in electrocardiogram, cardiomegaly with aortic bulging on the thoracic radiography, and shunt flow between aorta and pulmonary artery on the echocardiography, the dog was diagnosed as the left-to-right patent ductus arteriosus.
Показать больше [+] Меньше [-]Effects of clove oil on haematology and blood chemistry in crusian carp (Carassius auratus)
2007
Kho, K.N. (Chungbuk National University, Cheongju, Republic of Korea) | Jung, T.S. (Gyeongsang National University, Jinju, Republic of Korea) | Heo, G.J. (Chungbuk National University, Cheongju, Republic of Korea), E-mail: gjheo@cbu.ac.kr
To determine the effects of anesthesia to clove oil on the secondary stress indices, changes in haematological and blood chemistry were monitored in healthy crucian carps (Carassius auratus). 24 fishes were divided into three groups, and blood was collected before anaesthesia (control group), immediately after anaesthesia at a concentration of 30 mg/l clove oil (anesthetized group), and 24 h after anaesthesia (recovered group). The anesthesia to clove oil significantly increased glucose in anaesthetized group, and constantly decreased lactate dehydrogenase in anaesthetized group and recovered group.
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