Bovine Leukemia virus titer and leukocyte population associated with mastitis in peri- parturient dairy cows

We examined the association of postpartum mastitis with virus titer and leukocyte population of Bovine leukemia virus (BLV) infected cows monitoring sixteen BLV infected cows for 3 months after calving. Five cows developed mastitis (Mastitis Group) and 11 cows without mastitis served as a control group (Control Group). Flow cytometric analysis of peripheral blood leukocyte population exhibited higher number of MHC class-II+CD14- cells in both groups without significant difference between groups. CD3 + , CD4 + , CD8 + , and CD335 + cell numbers in Mastitis Group