خيارات البحث
النتائج 1 - 6 من 6
Serologic monitoring of animal welfare-oriented laying-hen farms in South Korea
2018
So, H., Chungbuk National University, Cheongju, Republic of Korea | Jeong, S., Chungbuk National University, Cheongju, Republic of Korea | Mo, J., Chungbuk National University, Cheongju, Republic of Korea | Min, K., Chungbuk National University, Cheongju, Republic of Korea | Kim, J., Chungbuk National University, Cheongju, Republic of Korea | Mo, I.P., Chungbuk National University, Cheongju, Republic of Korea
As animal welfare issue becomes important, the European Union bans conventional cages for laying hens from 2012. So the alternative housing systems like floor pens, aviaries or free range systems have been suggested. From 2011 to 2014, we monitored 20 welfare-oriented laying hen farms in South Korea to figure out serological status of major viral diseases. During this period, total 3,219 blood samples were collected from the randomly selected chickens to test and evaluate the hemagglutination inhibition titers for low pathogenic avian influenza, Newcastle disease and egg drop syndrome' 76. A total of 2,926 blood samples were tested through enzyme linked immunosorbent assay (ELISA) to assess the serological status of infectious bronchitis (IB). The distribution of ELISA titers for IB was various from almost 0 to 20,000 through the all weeks of age. Also, the antibody coefficient of variation for most of the diseases in this study was higher than those of typical cage layers. As this study was the first surveillance for major avian viral diseases of the animal welfare-oriented farms in South Korea, the results obtained from this study will help to determine what information and resources are needed to maintain better biosecurity and to improve the health and welfare of laying hen flocks.
اظهر المزيد [+] اقل [-]Pig viral diseases causing reproductive failure in Korea
1992
Kim, B.H. | Kweon, C.H. | An, S.H. | Rhee, J.C. (Rural Development Administration, Anyang (Korea Republic). Veterinary Research Institute)
An immunohistochemical study of the endocrine cells in the stomach of the Korean hedgehog (Erinaceus Koreanus)
1991
Lee, J.H. | Lee, N.S. | Kim, J.B. (Kyungpook National Univ., Taegu (Korea Republic). Coll. of Veterinary Medicine) | Lee, H.S. (Taegu Oriental Medical Coll., Taegu (Korea Republic))
An immunohistochemical study of the endocrine cells on the gastroentero-pancreatic system of the African clawed toad, Xenopus laevis
1992
Lee, H.S. (Kyungsan Univ., Kyungsan (Korea Republic). Dept. of Biology) | Lee, J.H. (Kyungpook Nat'l Univ., Taegu (Korea Republic). Coll. of Veterinary Medicine)
An immunohistochemical study of the endocrine cells in gastrointestinal tract of the Korean native goat
1990
Lee, J.H. (Kyungpook National University, Taegu (Korea Republic). College of Veterinary Medicine) | Lee, H.S. (Taegu Oriental Medical College, Taegu (Korea Republic). Department of Biology)
An immunohistochemical observation on the somatostatin cells in the gastrointestinal tract of the yonsan ogol fowl
1990
Ryu, S.Y. | Cho, S.W. (Chungnam National University, Taejon (Korea Republic). Department of Veterinary Medicine) | Lee, C.S. (Kyungpook National University, Taegu (Korea Republic). College of Veterinary Medicine) | Yamada, J. (Obihiro University of Agriculture and Veterinary Medicine, Obihiro (Japan). Department of Veterinary Medicine)
