Advances in Molecular and Genomic Profiling of Health and Performance Traits in Horses

Molecular and genomic technologies have significantly transformed equine research by enabling accurate and comprehensive profiling of health status and performance-related traits in horses. The integration of advanced molecular tools has shifted traditional approaches from phenotype-based assessment to precise genotype-driven evaluation, thereby improving the efficiency of disease diagnosis, genetic selection, and overall herd management. This short communication provides an overview of key molecular and genomic techniques widely applied in equine science, including polymerase chain reaction (PCR), next-generation sequencing (NGS), single nucleotide polymorphism (SNP) genotyping, and emerging multi-omics approaches such as transcriptomic and proteomics. PCR-based techniques remain essential for rapid and sensitive detection of infectious and genetic diseases, while NGS technologies have revolutionized genome-wide analysis by enabling high-throughput sequencing, gene discovery, and identification of functional genetic variants. SNP genotyping has further contributed to understanding genetic diversity, parentage verification, and marker-assisted as well as genomic selection for economically important traits such as endurance, speed, and disease resistance. In addition, omics technologies provide deeper insights into gene expression patterns, metabolic pathways, and complex biological interactions that influence equine health and performance. The integration of bioinformatics tools has enhanced the analysis and interpretation of large-scale genomic datasets, facilitating accurate identification of candidate genes and biological markers. These advancements support the development of precision veterinary medicine, allowing customized health management strategies and improved breeding decisions. Moreover, genomic profiling plays a crucial role in early disease detection, monitoring of hereditary disorders, and conservation of valuable equine genetic resources. Despite these advancements, several challenges hinder the widespread adoption of genomic technologies in routine veterinary practice, particularly in developing regions. High costs, requirement of specialized infrastructure, limited technical expertise, and lack of awareness among stakeholders remain significant constraints. Nevertheless, continuous technological innovations and decreasing sequencing costs are expected to improve accessibility and applicability in the near future. Overall, molecular and genomic profiling holds immense potential to enhance equine health, welfare, and productivity. Its integration into research, clinical practice, and breeding programmers will play a pivotal role in advancing sustainable equine management and precision veterinary science.