Farm and slaughter survey of bovine tuberculosis in captive deer in Switzerland

In 1998, a survey was conducted by postal questionnaire to gather basic kno wledge about the management, health and productivity of captive deer in Swi tzerland. In addition, lymph nodes were collected from slaughtered deer fro m 124 of the 262 holdings surveyed, and tested for Mycobacterium bovis and Mycobacterium tuberculosis. The total farmed deer population was 8389 anima ls kept on 485 holdings; 87 per cent were fallow deer, 8 per cent red deer, 4 per cent sika deer, and there were small numbers of other species. The m edian herd sizes were 12 for fallow deer and eight for red deer. Few owners had handling facilities or crushes. In none of the lymph nodes examined we re lesions typical of bovine tuberculosis observed, and neither M bovis nor M tuberculosis was cultivated from any of the samples.