HEMATOLOGICAL CHANGES AND RESISTANCE OF ERYTHROCYTES OF HORSES IN RESPONSE TO 32 KM RACES

A. Andriichuk1, H. Tkachenko2, I. Tkachova1, I. Matiukha3

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1Institute of Animal Science NAAS,
3 7th Gvardiyskoi Armii str., Kulynychi, Kharkiv region, Kharkiv district, 62404, Ukraine

2Institute of Biology and Environmental Protection, Pomeranian University in Słupsk,
22b Arciszewski str., Słupsk 76-200, Poland, This email address is being protected from spambots. You need JavaScript enabled to view it.

3Institute of Animal Biology NAAS,
38 Stusa str., Lviv 79034, Ukraine

The objective of the present study was to investigate the alterations of some hematological parameters (hematocrit (HCT), hemoglobin concentration (HGB), the count of red blood cells (RBC), mean corpuscular hemoglobin concentration (MCHC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), red cell distribution width (RDW), as well as resistance of erythrocytes to urea and hydrogen peroxide in horses after 32 km endurance race. Seven horses from Crimea region (Bilohirsk, Crimean region) were involved in this study. Endurance horses used in this study are trained and conditioned to perform over long distances at moderate speeds. The prolonged exercises were used in endurance race. The walk about 3 km/h for 20 min, the trot about 7 km/h for 15 min, and the canter about 5 km/h for 15 min) and the walk about 1 km were repeated for 1 h (phase I); rest in an outdoor paddock without access to water for 30 min. And phase II: the walk about 3 km/h for 20 min, the trot about 7 km/h for 15 min, and the canter about 5 km/h for 15 min) and the walk about 1 km was repeated for 1 h.

The results of the present study showed that adequate endurance race of low intensity could improve oxygen-dependent respiratory function in horses from Crimean region. Furthermore, the non-significant increase of red blood cells indices in endurance horses indicate about good athletic level after 32 km endurance ride. Statistically significant differences in the percentage of hemolyzed erythrocytes between pre- and post-ride period were observed and thereby signifying an oxidative stress-dependent impairment of erythrocyte stability.

Keywords: ENDURANCE RIDE, ENDURANCE HORSES, HEMATOLOGICAL PARAMETERS, RESISTANCE OF ERYTHROCYTES, EXERCISE

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