OUTCOME OF A 10-YEAR PARATUBERCIILOSISM VACCINATION TRIAL IN I THE BASQUE COUNTRY!

摘要

In Spain, Johne's disease or paratuberculosis (PTB) appears to be widely distributed in cattle, but there are few studies aimed at establishing its prevalence. Vazquez et al. 1 found an individual animal prevalence in slaughtered cattle of 46.7 according to histopathological lesions and 39.1 according to tissue PCR. In a similar study by Balseiro et al. 2, the estimated prevalence was 28.4. With regard to herd prevalence, it has been estimated that about 50 of all herds in the Leonese Mountains contain at least one PTB-infected animal 3.