Epidemiology of bovine Johne's disease (BJD) in beef cattle herds in Australia
JWA Larsen, JK Webb Ware, P Kluver
AUSTRALIAN VETERINARY JOURNAL | WILEY-BLACKWELL | Published : 2012
OBJECTIVE: To describe the epidemiology of bovine Johne's disease (BJD) in beef herds in Australia. DESIGN: Retrospective survey of beef herds detected with BJD between 1991 and 2006. METHODS: Information about the management and physical characteristics of affected herds, index and clinical cases, testing and control programs, and attitudes to BJD were collated from existing data and personal interviews of herd owners or managers. Herds were excluded if they contained fewer than 30 breeding cows or operated as a dairy farm. RESULTS: Records from 109 herds demonstrated the first detected ('index') case was 3.4-fold more likely to be a beef rather than dairy breed. However, further analysis r..View full abstract
We gratefully acknowledge the cooperation of DPI and RLPB staff in NSW, and DPI staff in Victoria and South Australia, who gathered and collated information on the infected herds. We thank Mr Garry Anderson for statistical analysis and Ms D Rees for data entry. The study was funded by the Cattle Council of Australia through Animal Health Australia and the MLA Donor Company Ltd.