Evaluation of bovine leukaemia virus infection control measures in Japanese Black beef cattle breeding farms: A 7‐year longitudinal study based on proviral load

Early identification of high-PVL cattle, physical separation of BLV-positive and BLV-negative cattle, and culling of BLV-positive cattle was effective in reducing BLV prevalence in a Wagyu breeding herd. These findings propose a feasible, farm-based approach for managing endemic BLV under commercial conditions.