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Title: An abattoir-based study of the prevalence of subclinical Johne's disease in adult cattle in south west England.
Title Abreviation: Epidemiol Infect Date of Pub: 1996 Jun
Author: Cetinkaya B; Egan K; Harbour DA; Morgan KL;
Issue/Part/Supplement: 3 Volume Issue: 116 Pagination: 373-9
MESH Headings: Abattoirs*; Animal; Cattle*; Cattle Diseases*; England; Lymph Nodes*; Mycobacterium paratuberculosis*; Paratuberculosis*; Polymerase Chain Reaction*; Prevalence*; Support, Non-U.S. Gov't; -PG-;
Journal Title Code: EPI Publication Type: JOURNAL ARTICLE
Date of Entry: 960805NEntry Month: 9610
Country: ENGLAND Index Priority: 1
Language: Eng Unique Identifier: 96255633
Unique Identifier: 96255633 ISSN: 0950-2688
Abstract: The prevalance of subclinical Johne's disease was estimated in adult cattle slaughtered at three major abattoirs in south west England. A polymerase chain reaction (PCR) based on IS900 was used to detect Mycobacterium paratuberculosis in intestinal lymph nodes of 1553 cattle. Culture was also carried out on all PCR positive and inconclusive samples. The prevalence of subclinical disease in adult cattle was 3.5% (95% confidence intervals (CI) 2.6-4.7) by PCR and 2.6% (CI 1.8-3.6) by culture. The proportion of the disease in each month ranged from 1.6% (CI 0.2-5.5) in April to 4.6% (CI 2.8-6.9) in November, but the difference was not significant (P > 0.05). The proportion of PCR positive lymph nodes in each abattoir ranged from 2.8% (CI 1.6-4.6) to 4.9% (CI 2.9-7.6), this difference was not significant either (P > 0.05). The prevalence in young cattle was 2.0% (CI 0.6-4.5). The difference between age groups was not statistically significant (P > 0.05).
Abstract By: Author
Address: Division of Animal Health and Husbandry, University of Bristol, Landford.