Agricultural University of Wroclaw, Deparatment of Animal Hygiene and Livestock Environment, Dicksteina 3, 51–617, Wroclaw, Poland.
Eighteen calves of 3–6 weeks age were transported hy road for 45 minutes from the birth's place to calving house. Six hlood samples were collected from these animals for plasma cortisol, glucose, total and differential leukocyte counts, and for lymphocyte subpopulations. The experimental result showed significant increased level of cortisol, decreased number of T and B Iymphocytes, after transportation. The decrease in T cells lasted for one day while B cells for seven days after the relocation. CD4+conc was found lowest on first day and CD8 on the second day of transportation. The CD4+ and CD8+ ratio increased from 1.49 to 2.27.
Calves, Stress, Cortisol, Glucose, T and B lymphocytes, CD4+ cells, CD8+ cells
