Effect of age on heart rate, blood lactate concentration, packed cell volume and hemoglobin to exercise in Jeju crossbreed horses

Abstract

BackgroundThis study aimed to analyze the on heart rate, blood lactate concentration, packed cell volume (PCV) and hemoglobin (Hb) response after conducting exercise in endurance horses.MethodsA total of 20 healthy 3–9-years-old Jeju crossbreed mares (5.95 ± 2.24 year) of age and 312.65 ± 13.59 kg of weight) currently participating the endurance competition were used. The field tests selected for the experiment was gallop (approximately 8.3 m/s) along the selected 2.5 km course (a natural forest trail, not artificial road; a closed loop course). The horses were divided into three groups according to their age; 3–4 years of age (G1, 3.29 ± 0.49 year), 6–7 years of age (G2, 6.42 ± 0.53), and 8–9 years of age (G3, 8.50 ± 0.55). The measurements times for the heart rate, blood lactate concentration, PCV, and Hb analysis were conducted before exercise (T0), shortly after exercise (T1), 15 min after exercise (T2), and 30 min after exercise (T3), respectively. Data was analyzed using an analysis of covariance (ANCOVA) for repeated measures with times and groups.ResultsThe results of the comparison depending on the passage of rest time after exercise suggest that the heart rate and blood lactate concentration of three groups at T2 significantly decreased compared to T1 (p < 0.001). PCV of the G2 and G3 groups were significantly decreased at T2 compared to T1 (p < 0.01). Hb values at G2 (p < 0.01) and G3 (p < 0.001) groups were significantly decreased at T2 as compared to T1. However, heart rate, blood lactate concentration, PCV and Hb level at T1 showed no difference in the comparison of horses from different age groups with the exception of G3 group in terms of heart rate.ConclusionThe physiologic and hematological responses of horses during recovery time after 2,500 m exercise with gallop were no significant difference among the groups. These data are useful as a response evaluation method for training of endurance horses.

Diurnal rhythms of heart and respiratory rates in donkeys of different age groups during the cold-dry and hot-dry seasons in a tropical savannah

“…The baseline HR reported by Kang and Park () in 3–9‐year‐old Jeju crossbreed mares are similar to the values recorded during the cold‐dry season but lower than those obtained during the hot‐dry season. Merkies et al.…”

“…The baseline HR reported by Kang and Park (2017) in 3-9-year-old Jeju crossbreed mares are similar to the values recorded during the cold-dry season but lower than those obtained during the hot-dry season. Merkies et al (2016) reported higher HR in weaned foals than those recorded in foal donkeys in the current study.…”

Effects of different load on physiological, hematological, biochemical, cytokines indices of Zanskar ponies at high altitude

“…While packed cell volume can predict the oxygen transportation capacity. These changes are in accord with the earlier finding reported by (Stefansdottir et al, 2014) in horses, their riding assessment and by (Kang and Park, 2017) in horses after endurance exercise. These parameters grant us meaningful information about fitness changes in horses (Piccione et al, 2010).…”

Relationship between Resting and Recovery Heart Rate in Horses

“…Thereafter, they were walked to their paddocks within 5 min and left loose in them for the remaining time until completing the total of 30 min set for recovery observation. It is known from other studies that HR recovers more rapidly when horses are walked, and even more rapidly when trotted instead of kept standing [37,38]. Thus, it is likely that the HRrecovery rates of the horses in this study would have been somewhat higher after the 15th minute if they had been walked until the end of the recovery period of 30 min.…”