EN
The resting concentrations of cholesterol (TC), triacylglycerols (TG), phospholipids (PL), total lipid (TL), high-density lipoprotein cholesterol, HDL-C), low-density lipoprotein (LDL-cholesterol, LDL-C) and very low-density lipoprotein (VLDL-C), additionally magnesium (Mg) and calcium (Ca) levels were examined in 10 young Standardbred horses after six months of physical training. Blood serum and standardized laboratory methods were used for determining TG, TC and HDL-C concentrations, as well as Mg and Ca. The amounts of TL, LDL-C and VLDL-C were counted by use of the Thurnham (TL) and Friedewald equations (LDL-C,VLDL-C). Results indicated that serum total lipids, TG, TC, HDL-C, LDL-C and VLDL-C differences before and after conditioning were relevant. There was a significant increase in the serum Mg concentration while the level of Ca was found to be unchanged. This study concludes that a long-term moderate exercise program can improve serum lipid and lipoprotein pattern and Mg concentration in the trotters which may be beneficial to their performance.