[Ontogenic changes of fatty acid composition of cholesterol esters in pig tissues].

The fatty acid composition of cholesterol esters was studied in the liver, lungs and adrenal tissue from 110-day foetus, 1-day, 3-month old piglets and adult pigs. In the tissues from foetus and newborn piglets a relative amount of linoleic acid of cholesterol esters is lower and that of arachidonic acid is higher, than in cholesterol esters of piglets and adult pig tissues. The quantity of linoleic acid of cholesterol esters in pig tissues in early postnatal ontogenesis increases. A decrease is observed for a relative amount of stearic, oleic and palmitoeleic acids in the cholesterol esters of the liver tissues and for that of arachidonic acid--in the lung tissues. In the adrenal tissue the quantity of arachidonic acid decreases and that of oleic and eicosotrienic acids rises.