Прооксидантний і антиоксидантний баланс крові коней української верхової породи в динаміці фізичних навантажень
Prooxidant and antioxidant balance in the blood of Ukrainian Warmblood horses during the exercises

Summary/Abstract: The goal of our study was an analysis of oxidative stress markers level and antioxidant defences in the blood of Ukrainian Warmblood horses at the rest and after training. There were significant decrease in the thiobarbituric acid reactive substrates (TBARS) content and lipid hydroperoxides level in the erythrocytes and plasma of horses after the training. There were also significant decreases in the values of the aldehyde derivatives of protein oxidation in the plasma. An antioxidant defence in the blood of horses after the training was provided by the activation of superoxide dismutase and glutathione reductase. Correlation analysis of the relationship between markers of oxidative stress and antioxidant defence system confirmed the important role of glutathione antioxidant system for prevention of oxidative stress during exercises. The level of oxidative stress markers and activity of antioxidant defences in the blood of sport horses can be sensitive and informative parameters for the assessment of equine performance.

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