DETECTION OF ANTIBODIES AGAINST BOVINE IMMUNODEFICIENCY-LIKE VIRUS INDAILY CATTLE IN HOKKAIDO

Serological survey of bovine immunodeficiency-like virus (BIV) infecti on was performed in cattle of 3 different farms in Hokkaido, where a r elatively high seroprevalence was recorded for bovine leukemia virus ( BLV). About a half of 120 cattle tested were seropositive for BLV, whi le 7.5% of the cattle were seropositive for BIV. Though increased numb ers of leukocytes were frequently observed in BLV-seropositive cows, n o such changes were observed in BIV-positive but BLV-negative cows. No correlation was demonstrated between BIV- and BLV-seroprevalence of t he cattle.