Abstract
We collected blood samples from 45 Japanese Black calves (healthy calves, 35; diseased calves, 10; 1-30 weeks old) and measured their blood cell counts and erythrocyte indices both manually and using an automated hematology analyzer. Although the correlation between the values derived from a manual count and that using an automated hematology analyzer were low for red blood cell counts (r＝0.426) and platelet counts (r＝0.513), a high correlation was observed for white blood cell counts (r＝0.705). The results of this study proved that counting blood cells in calves using an automated hematology analyzer, whose reliability had previously been considered to be low, was reliable to a certain degree using an improved automated hematology analyzer.
