tailieunhanh - Báo cáo khoa học: " Prevalence of Porcine Proliferative Enteropathy Its Control with Tylosin in Korea"

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Prevalence of Porcine Proliferative Enteropathy Its Control with Tylosin in Korea | J. Vet. Sei. 2001 2 3 209-212 Veterinary Science Prevalence of Porcine Proliferative Enteropathy and Its Control with Tylosin in Korea Sang Won Lee1 Tae Jong Kim1 Seung Yong Park13 Chang Sun Song1 Hyung Kwan Chang1 Jae Kil Yeh2 Hye In Park2 and Joong Bok Lee1 Laboratory of Veterinary Microbiology and Infectious Disease College of Veterinary Medicine Konkuk University 1 Hwayang-dong Gwangjin-gu Seoul 143-701 Korea 2ELANCO Animal Health EU LILLY ASIA INC. Korea Branch JungHun Bldg. 704 944-1 Daechi-dong Gangnam-gu Seoul 135-280 Korea 3Research Center for Biomedicinal Resources and Division of life Sciences Paichai University 439-6 Doma-dong Seo-gu Taejon 302-735 Korea ABSĨữACĨ Porcine proliferative enteropathy PPE is an enteric disease been caused by Lawsonia intracellularis. It has become one of the critical problems in the pig industry. To investigate the prevalence of PPE in Korea serum samples of 828 pigs from 65 herds were tested using indirect immunofluorescence antibody technigue IFA . The infection rate in individual pigs varied from 44 to 69 whereas 106 in pig farms. The infection frequency was 57 and according to age respectively. Administration of tylosin in feed at a concentration OĨ 110 ppm for 14 days reduced the infection rate of the farms. These data indicated that the high prevalence of PPE may be controlled by tylosin. KEY WORDS Lawsonia intracellularis Porcine Proliferative Enteropathy Prevalence of PPE in Korea PPE is an enteritis of pigs and is caused by Lawsonia intmcellularis L. intracelhdaris . The bacteria cause a proliferation of the mucosa of ileum and proximal part of the colon 5 9 The major clinical symptoms of PPE can be classified into chronic and acute hemorrhagic types. The former shows anorexia a mild diarrhea and growth retardation whereas the latter shows an acute intestinal hemorrhage anemia and sudden death 8 . These symptoms occur in pigs between 6 and 20 weeks and Correspondmg author Joong Bok Lee Tel 82-2-450-3714 .