EFFECTS OF SHOW-JUMPING PERFORMANCE STRESS ON PLASMA-CORTISOL AND LACTATE CONCENTRATIONS AND HEART-RATE AND BEHAVIOR IN HORSES

被引：39

作者：

COVALESKY, ME

RUSSONIELLO, CR

MALINOWSKI, K

机构：

[1] Department of Animal Sciences, Cook College, Rutgers, the State University, New Brunswick, New Jersey

来源：

JOURNAL OF EQUINE VETERINARY SCIENCE | 1992年 / 12卷 / 04期

关键词：

D O I：

10.1016/S0737-0806(06)81454-1

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

Effects of show jumping competition on stress levels in horses was examined. Twenty-six horses were sampled in both show and farm environments from three levels of show experience schooling, (least experience, n=11); intermediate, (moderate experience, n=6); open, (most experience, n=9). Blood samples were taken at 6 time points; 3 at the horse show and 3 at the home farm (baseline at rest, pre-schooling and post-performance over a jump course). Stress responses were assessed through comparison of the behavioral response of the horses (determined by a subjective scoring system) to plasma cortisol (F) concentrations. Physical exertion was evaluated by heart rate (HR) and plasma lactate (L) concentrations. Schooling jumpers displayed higher baseline F concentrations than open jumpers (83.5+/-9.2 vs 46.4+/-10.2 ng/ml, respectively; p<.05); but not when compared to intermediate jumpers (66.2+/-13.7 ng/ml; p>.05) at the horse show. At the farm, there were no differences in F concentrations between experience levels at a time point (p<.05). Least experienced horses displayed higher F values at rest at the show compared to the home farm. At the show, open jumpers had higher L concentrations post-exercise compared to intermediate horses (40.3+/-3.4 vs 25.5+/-4.0 mg/dL, respectively; p<.05); but were not different compared to schooling jumpers (34.8+/.-2.0 mg/dL; p>.05). There were no differences in heart rates or behavior score between experience levels at specific time points at either the show or farm (p>.05). Low positive correlations were found between HR and F(r=.24, p<.05); HR and L (r-.48, p<.05); and HR and behavior (r=.22, p<.05). Results suggest that conditioned jumpers that have previously been exposed to horse show environments do not appear stressed during acute show-jumping competition.

引用

页码：244 / 251

页数：8

共 36 条

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