For thirteen calves (seven heifers, six bulls) of the limosine breed in the first ten days of life changes in the concentration of the triglyceride, total cholesterol, cholesterols HDL and LDL in the blood plasma were analyzed. During this period calves were kept with heifers. The triglyceride concentration in the blood plasma of calves with unrestricted access to colostrums and later to regular milk was slightly higher in the first days of the postnatal life compared to mature animals and was independent of the sex. In the first three days of life the highest increase of the triglycerides concentration in the blood plasma was observed. Individual variations in the triglycerides concentration in both sexes of calves were quite significant resulting probably from the different food intake times. With the age of calves a systematic increase of triglycerides, total cholesterol, cholesterol HDL and LDL was observed. However, the rise of the HDL cholesterol was proportionally higher than the LDL cholesterol. With the age of calves a gradual change in percentage of the lipoprotein HDL and LDL in distribution of the total cholesterol present in the blood was detected. From the 4–5 day of the postnatal life more than 50% of the total cholesterol was distributed by HDL lipoproteins.

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