The breed of cattle transported appeared to have an effect (P < 0.05) on plasma albumin, globulin, total protein, haptoglobin, cortisol, DHEA, cortisol:DHEA ratio, and progesterone, with tendencies toward significance (P < 0.10) on BHB, fibrinogen, and total leukocyte count. These results are summarized in Table 1. However, there did not appear to be any consistent trend as far as one breed responding differently to the stress of transportation than other breeds across all variables. Two profiles for variables by breed, total leukocyte count, and plasma cortisol are shown in Figure 5. The total leukocyte counts of all breeds responded similarly to stress (Figure 5A). In contrast, baseline plasma cortisol concentrations were lower (P < 0.001) in Aberdeen Angus bulls than in Friesian or Belgian Blue × Friesian bulls and, although acutely increased, did not peak as highly as the other 2 breeds (Figure 5B).