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Evaluation of the Extract From Lymph Nodes for Salmonella Monitoring in Pig Herds
2006
Jung, B.Y. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: jungby@nvrqs.go.kr | Choo, J.H. (Kyungpook National University, Daegu, Republic of Korea) | Kim, J.H. (Kyungpook National University, Daegu, Republic of Korea) | Jung, J.Y. (Kyungpook National University, Daegu, Republic of Korea)
The objective of this study was to investigate the use of extract from mesenteric lymph nodes as an alternative to serum for ELISA to detect Salmonella antibodies in slaughter pigs. Among 324 slaughter pigs, 65 (20.1%) were positive in the serum ELISA and 76 (23.5%) were positive in the ELISA with extract from lymph nodes. A total of 24 (7.4%) Salmonella representing 6 serotypes were isolated from mesenteric lymph nodes and 35 (10.8%) Salmonella belonging to 2 serotypes were also recovered from cecal contents of slaughter pig samples, respectively.
Показать больше [+] Меньше [-]Efficacy of ELISA for measurement of protective newcastle disease antibody level in broilers
2006
Kim, J.N. (Chungbuk National University, Cheongju, Republic of Korea) | Heo, W. (Daessung Microbiological Labs. Co. Ltd., Uiwang, Republic of Korea) | Mo, I.P. (Chungbuk National University, Cheongju, Republic of Korea), E-mail: moip@cbu.ac.kr
Newcastle disease (ND) is a highly contagious disease of poultry that can cause severe economic losses throughout the world. Vaccination has been used for a long time and proved as one of the most effective method to reduce the economic loss due to ND virus infection. The measurement of antibody titer such as hamagglutination-inhibition (HI) test with sera has been used as a useful method to evaluate the immunity leve of host. However, HI test is gradually being replaced by the enzyme linked-immunosorbent assay (ELISA).
Показать больше [+] Меньше [-]Iridovirus Infection of Cultured Juvenile Flounder (Paralichthys Olivaceus) in Nursery
2006
Kim, T.J. (Chonnam National University, Gwangju, Republic of Korea) | Jang, E.J. (Chonnam National University, Gwangju, Republic of Korea) | Kim, J.S. (Jeonnam Biotechnology Research Center, Hwasun, Republic of Korea) | Lee, J.I. (Chonnam National University, Gwangju, Republic of Korea), E-mail: jaeil@chonnam.ac.kr
Iridovirus is an icosahedral cytoplasmic double-stranded DNA virus with a genome size of 170-200kb. Outbreaks of fish iridovirus infection are characterized by their wide geographic distribution and broad host spectrum, especially in water temperatures of 22-27℃ Recently, the causative agent of high mortalities in flounder (Paralichthys olivaceus) was identified as fish iridovirus in Korea. Iridoviral infection repeatedly occurs in the same area for long periods, suggesting the possibility of viral infection in nursery.
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