Effect of selenium-methionine on biochemical profile of cows blood plasma at different content of fat in diet
Influence of partial replacement in the cow diet grain concentrates by rapeseed and addition of selenium-methionine on the peroxide oxidation and biochemical indices of cows blood plasma were investigated. The higher concentration of phospholipids, triacylglycerols and cholesterol esters in the blood plasma of cows fed diet with rapeseed were found. Addition of selenium-methionine promoted concentrations of these lipid classes. For addition of selenium-methionine to the diet with lower fat content, the concentration of cholesterol esters was increased only. Addition of selenium-methionine to diet with rapeseed increased total protein and decreased the urea concentration in blood plasma. Addition of rapeseed strengthened peroxidative processes. Antioxidant effect of selenium-methionine has been more expressed at a diet with greater fat content.