The role of circulating β-endorphin in different stress models in equines: a review

To evaluate whether β-endorphin (β-END) is a reliable marker of stress in equines, the reference values and changes in different models of stress (exercise, transportation) have been considered. Baseline circulating β-END concentrations of horses showed seasonal and circadian fluctuations. Increased β-END concentra tions were associated with the severity and type of exercise stress and were positively correlated with both exercise speed and intensity. Positive correlations between β-END or ACTH and cortisol were recorded after competitive and experimental jumping over different fence height, related to the em otional content of trials.
Source: Journal of Equine Veterinary Science - Category: Veterinary Research Authors: Tags: Review Article Source Type: research