Variation in the SLC16A1 and the ACOX1 genes is associated with gallop racing performance in Arabian horses
2020
Abstract Arabian horses are not only one of the most ancient breeds in the world, but they are also one of the most appreciated racehorse breeds today. The breed generates attention for their phenomenal endurance ability as well as their capability for gallop racing. Consequently, genetic testing to select the best individuals is attracting ever increasing interests from the Arabian industry. As such, the aim of this study was to further investigate associations between performance and variation at candidate genes suspected of having a key role in Arabian gallop racing performance. Generalized linear models were fit to test associations between eight candidate gene variants and a variety of gallop racing performance traits in a sample of Arabian racehorses (N=287). Two genes, Solute carrier family 16 member 1 (SLC16A1) and Acyl-CoA oxidase 1 (ACOX1), were significantly associated with multiple gallop racing performance traits, while another gene, Actinin alpha 3 (ACTN3) was associated with best race distance. Previously established associations between these three genes and equine metabolism strongly suggests further investigation of these genes and their relationship with Arabian horse performance is warranted.
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