Selected Hematological and Biochemical of the Peranakan Ongole (PO) Cattle in Different Stage of Reproductive in Indonesian Tropical Environment

This research aimed to determine the proportional hematology and biochemistry in a different stage of estrous cycles and period of gestation and lactation in the Peranakan Ongole
(PO) cattle in Indonesia's tropical environment. Thirty-three clinically healthy PO cattle were used in this research. Blood was collected for estrous, diestrus, metestrus, proestrus, pregnancy, and lactation groups for hematology and biochemistry analysis. The lymphocyte higher in estrous stages and lower in the lactation period (p<0.05). The triglyceride highest in all estrous
cycles and pregnancy period and lowest in the lactation period (p<0.05). The highest glucose was found in lactation and lowest in proestrus (p<0.05). The potassium highest in proestrus and the lowest in estrous and lactation (p<0.05). This finding has revealed that fluctuations in the
lymphocytes, triglyceride, and glucose in different stages of estrous cycles and pregnancy and lactation period. Blood and biochemical are affected by the stage of reproduction in the PO cattle in Indonesia's tropical environment.