Estimated risk analysis of Mycoplasma spp., M. bovigenitalium and ureaplasma diversum infection in prepucial mucus and semen from AI center and natural breeding bulls - Cardoso, M. V; Teixeira, S. R; Gregory, Lilian; Scarcelli, Eliana; Genovez, Margareth Élide; Vasconcellos, Silvio Arruda (International Congress on Animal Reproduction, 2004)