Blood biochemical parameters of Brazilian sport horses under training in tropical climate

Abstract

-This study aimed to provide baseline data for the serum biochemical parameters of Brazilian sport horses undergoing physical training for eventing to be used as a practical guide. A total of 139 blood samples were collected by vacuum venipuncture of the jugular vein from healthy horses in training. Tubes without anticoagulant were used for biochemical analysis. Means and standard deviations were determined for aspartate aminotransferase (AST) (306.27±84.66 U/L), creatine kinase (CK) (181.06±80.38 U/L), urea (29.51±5.82 mg/dL), creatinine (1.44±0.20 mg/dL), gamma glutamyl transferase (GGT) (14.58±6.55 U/L), calcium (13.22±0.59 mg/dL), and albumin (2.86±0.16 g/dL). The specific reference ranges were: AST, 197-454 U/L; CK, 116-290 U/L; urea, 22-42 mg/dL; creatinine, 1.2-1.8 mg/dL; GGT, 9-26 U/L; calcium, 12.2-14.2 mg/dL; and albumin, 2.6-3.1 g/dL. Beneficial effects of the training program on the horses were observed and these effects did not lead to any changes in the biochemical parameters studied. The environment may influence the serum biochemical parameters, particularly AST and CK, of Brazilian sport horses.

Clinical biochemistry profile of American Quarter Horse broodmares fed Tifton-85 (Cynodon spp.) hay and haylage

“…The groups treated with haylage presented a discrete decrease that persisted for three weeks (T1, T2 and T3). Mean values observed in both G1 and G2 ranged respectively from 200.43U/L to 259.97U/L and 138.39U/L to 230.23U/L, similarly to those reported by Souza et al (2016) of 140U/L and Padilha et al (2017) with means of 246.34U/L. According to Kaneko & Harvey (1997) all values remained within the normal range (226-366 U/L).…”

“…Haylage group showed similar values, 12.9±4.71U/L (T0) e 19.2±9.10U/L (T4), but without statistic increase. Although discrete alterations occurred, all values remained within the normal limit for equine (9 to 26U/L) according to Padilha et al (2017), demonstrating that no cholangitis or cholestasis occurred.…”

“…described by Kaneko & Harvey (1997) (10 to 24mg/dL). These variations were expected, due to protein intake and test methodology, with no clinical significance (Souza et al 2009, Padilha et al 2017. These results indicate that the Table 5.…”

Effect of exercise on some minerals, metabolites and enzyme activities in the serum of trained Arabian horses

“…The aim of this study was to investigate whether training of Arabian horses could change some serum biochemical variables, trace elements, and electrolytes before and after exercise or not. Researchers suggested that exercise in horses could change some biochemical parameters of serum that were related to different factors such as individual differences, breed, and the level of exercise [12,15,16].…”

“…Urea and creatinine are commonly used for the evaluation of kidney function. The concentrations of these two factors may be affected by dehydration and exercise [12].…”