The influence of season and age on the levels of lipids, lipoproteins and enzymes in the serum of Lička pramenka sheep

This study aimed to identify seasonal and age related variability in triglycerides (TRI), paraoxonase (PON), stimulated PON (PON I) cholesterol (CHOL, HDL, LDL) extensively reared Lička pramenka sheep. The was conducted 30 randomly chosen non-gravid sheep on an extensive farm, grouped into three groups the Karlovac County, Croatia. Blood collected by venepuncture of jugular vein, twice one year - first sampling spring (April) second autumn (October). results showed that had no significant effect any investigated indicators, while seasonality significantly affected five out six parameters examined. Significantly higher levels serum lipid components can be explained influence traditional way rearing feeding Furthermore, I all are well adapted environment system. Future research should carried number farms, include more order determine objective benchmarks for lipids enzymes connected those lipids.