Biochemical responses to a non-standard exercise in horses trained for jumping
2013
Hura, V., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Horses | Novotny, F., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Horses | Boldizar, M., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Horses | Redl, M., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Horses | Noskovicova, J., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Horses | Hornak, S., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Small Animals | Petrovic, V., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Ruminants | Lazar, G., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Ruminants | Kovac, G., University of Veterinary Medicine and Pharmacy, Kosice (Slovak Republic). Clinic of Ruminants
The aims of this study were to analyze the indices of mineral, enzymatic, protein and lipid metabolism, and the antioxidant status in horses trained for jumping after prolonged exercise. A total of 10 Slovak warmblood horses (aged 615 years) trained for jumping were used. Blood samples were taken before and after the jumping training (control), immediately after prolonged exercise and after the following 36 h of rest. Control samplings showed no signs of exercise-induced dehydration, but an increase of haematological indices, increased concentration of lactate and increased activity of lactate dehydrogenase whose changes may be indicative of splenic blood efflux and activation of anaerobic metabolism. On the other hand, changes of biochemical indices (such as: increased alanine aminotrasferase, lactate dehydrogenase and creatine phosphokinase, decreased K and Fe, increased malondialdehyde and glutathione peroxidase) that are indicative for the muscle membrane leakage, oxidative stress and electrolyte imbalances, and alterations of intermediary metabolism were found due to the non-standard prolonged exercise. Although this study demonstrates that trained horses adapted to a certain exercise regimen are exposed to oxidative and metabolic stress by non-standard prolonged workload, further research is required to assign an appropriate resting regime needed to compensate for the induced biochemical changes.
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