Genetics of Equine Behavioral Traits.
Authors: C. Wickens, S. Brooks
Journal: The Veterinary clinics of North America. Equine practice
Summary
# Editorial Summary: Genetics of Equine Behavioral Traits Wickens and Brooks (2020) examined the heritable basis of equine behavior, recognising that temperament, neuroendocrine responses, and stereotypic behaviours profoundly influence rideability, performance outcomes, and horse-human safety across all disciplines. Rather than reviewing environmental factors alone, the authors synthesised existing research on the genetic architecture underpinning behavioural expression, incorporating findings from molecular genetics studies that have identified specific genetic markers associated with fear responses, reactivity, and stable vices. Modern genomic techniques—including genome-wide association studies—have demonstrated that behaviour is indeed a quantitative trait with measurable heritability components, enabling practitioners to better predict which animals may be predisposed to specific temperament characteristics or problematic behaviours before extensive training investment. The authors emphasise that understanding the biological and genetic foundations of behaviour has direct implications for breeding decisions, early assessment protocols, handler safety protocols, and targeted interventions for horses exhibiting stereotypies or anxiety-related conditions. For equine professionals managing behaviour-related challenges, this knowledge base shifts the conversation from purely training-focused approaches toward a more integrated model incorporating individual genetic variation, neurobiological maturity, and informed management strategies tailored to each horse's constitutional makeup.
Read the full abstract on PubMed
Practical Takeaways
- •Understanding genetic contributions to temperament and behavior can inform breeding decisions and improve handler/rider safety outcomes
- •Recognition that some behavioral issues have genetic underpinnings may guide management and training approaches differently than purely learned behaviors
- •Awareness of genetic predispositions to stereotypic behaviors can support early detection and welfare interventions
Key Findings
- •Behavior is a quantitative trait with significant impact on equine performance, work capacity, and human safety interactions
- •Genetic basis exists for temperament traits, neuroendocrine function, and stereotypic behaviors in horses
- •Modern molecular genetic techniques offer improved understanding of behavioral biology in horses