Figure 1

Results of biochemical and haematological testing. The scale on the X- axis for all graphs is in hours for time points 0,4,8,12 and 24 and for days 2–12 thereafter. The scale on the Y-axis is as appropriate for the parameter measured (see appropriate sub-legend). (a) results of testing for GGT (iu/litre) to demonstrate adequate colostral absorption. (b) PCV (%): no difference was observed between challenge (X,Z) and control (W,Y) calves. (c) Erythrocyte count (x10¹²/litre): no difference was observed between challenge (X,Z) and control (W,Y) calves. (d) Thrombocyte count (x10⁹/litre): challenge calves (W and Y) demonstrate a marked reduction in thrombocyte counts when compared to controls (X and Z). (e) Leukocyte count (x10⁹/litre): challenge calves (W and Y) demonstrate a marked reduction in leukocyte counts when compared to controls (X and Z). (f) Mature neutrophil count (x10⁹/litre): no difference was observed between challenge (X,Z) and control (W,Y) calves. (g) Band (immature) neutrophil count (x10⁹/litre): no difference was observed between challenge (X,Z) and control (W,Y) calves. (h) Lymphocyte count (x10⁹/litre): challenge calves (W and Y) demonstrate a marked reduction in lymphocyte counts when compared to controls (X and Z). Note: These results have no level of statistical significance indicated as there are only 2 animals in each group. Values are only available until day 6 for calf Z which was euthanased for welfare reasons unrelated to the experiment.