Antioxidant Status in Elite Three-Day Event Horses during Competition

Table 3

Blood variables assessed before the competition (PRE), 20–30 min after cross-country jumping (XC), and 18–24 h after cross-country jumping (POST) for horses competing in the CCI2^* and CCI3^* divisions of the 2006 Jersey fresh three-day event^a.

Variable^b	PRE	XC	POST
Plasma TP, g/dL	7.01 ± 0.06^x	7.31 ± 0.07^y	6.76 ± 0.07^z
Plasma CORT, ug/dL	5.47 ± 0.43^x	11.1 ± 0.70^y	7.55 ± 0.36^z
Plasma AST, U/L	353.2 ± 33.8^x	413.4 ± 34.0^y	424.1 ± 36.2^y
Plasma LAC, mmol/L	0.82 ± 0.04^x	11.2 ± 1.60^y	0.62 ± 0.03^x
Plasma TOC, ug/mL	5.50 ± 0.28	5.50 ± 0.26	5.75 ± 0.33
Plasma RET, ng/mL	163.4 ± 4.6^x	177.0 ± 5.7^y	152.9 ± 4.4^z
Plasma BC, ng/mL	0.61 ± 0.07^x	0.47 ± 0.07^y	0.47 ± 0.07^y
RBC GPx, mU	260.6 ± 7.7^x	308.9 ± 12.8^y	254.5 ± 16.2^x

^aFor each variable, no difference between divisions was observed; therefore, data was averaged across divisions.
^bTP: plasma total protein; LAC: plasma lactate; CORT: cortisol; AST: plasma aspartate aminotransferase; TOC: plasma alpha-tocopherol; RET: plasma retinol; BC: plasma beta-carotene; GPx: erythrocyte glutathione peroxidase.
^x,y,zWithin row, means with unlike superscripts differ (P < 0.05).