The objective of this study was to investigate arterial and venous blood gas, electrolytes, biochemical, and hematological values in healthy Korean native calves (KNC). The healthy 62 KNC within 3 weeks-old were examined. The arterial blood was collected from caudal auricular artery and the venous blood from jugular vein. The blood samples were analyzed immediately using a portable blood gas analyzer. The pH, pO₂, pCO₂, cHCO₃⁻, BE, cSO₂, Na⁺, Ca²⁺, Cl⁻, anion gap potassium (AgapK), Hct, cHgb, glucose, lactate and creatinine were determined. The normal values for blood gas, electrolytes, biochemical, and hematological variables determined in this study agree with other published values for normal calves. The mean concentration of glucose and lactate within 3 weeks old of KNC is higher than those of adult cattle. The blood values according to weeks of age within 3 weeks-old of arterial and venous blood variables were not significantly different (P > 0.05). Glucose (r = 0.927) had the strongest correlations between arterial and venous values. The correlation between the values of the arterial and the venous blood was strong in creatinine (r = 0.925), lactate (r = 0.815), Ca²⁺ (r = 0.806), Hct (r = 0.799), Na⁺ (r = 0.790), cHgb (r = 0.786), base excess (r = 0.749), pH (r = 0.710), HCO₃⁻ (r = 0.710), and cTCO₂ (0.663). Analysis of blood samples in a field condition, using hand-held analyzer is rapid and useful in bovine practice.

Keywords: blood gas values, arterial, venous, Korean native calves