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Equine Gait (DMRT3)


Not offered in Europe

Video Explaining Different Forms of Equine Gait

Standardbreds, which are the breed of horses in harness racing, either trot, in which a horse's legs move in diagonal pairs, or pace, where the foreleg and hind leg move in unison. Trotters must be trained not to break their gait at high speeds and gallop, which is a disqualification during a race.


Scientists in Sweden have discovered that DNA mutations in a single gene (DMRT3) influence a horse's ability to trot or pace. This mutation also affects the tendency of some horses to break their gait and go into a gallop. Our genetic test identifies the presence of this mutation in certain breeds.

Breeds That Benefit From Testing:

Trotters, Icelandic horses, Paso Fino, Tennessee walking horse, Standardbreds, Finnhorse

Other gaited breeds: presence of the A variant predisposes horses to perform alternative gaits. CC horses are three-gaited.

Additional Breeds That Can Benefit:

Other gaited breeds: presence of the A variant predisposes horses to perform alternative gaits. CC horses are three-gaited as well as American Saddlebred, Appaloosa Horse, Arabian Horse, Bashkir Curly, Miniature Horse, Paint Horse, Kentucky Mountain Horse, Quarter Horse, Mangalarga Horse, Tennessee Walking Horse, Morgan Horse, Peruvian Horse.

Test Results:

Animal Genetics has designed a method to identify SNPs (haplotype) that influence a horse's gait. The genetic test verifies the presence of these SNP's and presents results as one of the following.


Coldblooded Trotters   AA horses have natural ability for pace and excellent leg coordination and trotting technique at high speed.
Icelandic Horses   AA horses have more natural ability to perform five gaits (walk, tölt, trot, gallop and pace). CA and CC horses are more likely to perform only four gaits (walk, tölt, trot and gallop).
Standardbreds Homozygous AA horses are more likely to perform better, earn more money and have higher breeding value for racing performance than CA and CC horses.

    Submit a Sample for Testing:

    Due to European patent (Ep2542702B1) Animal Genetics U.K. does not accept samples for DMRT3 testing for horses.


J Hered. 2015 Nov-Dec;106(6):734-40. doi: 10.1093/jhered/esv062. Epub 2015 Aug 18.

Different DMRT3 Genotypes Are Best Adapted for Harness Racing and Riding in Finnhorses. Jäderkvist Fegraeus K1, Johansson L1, Mäenpää M1, Mykkänen A1, Andersson LS1, Velie BD1, Andersson L1, Árnason T1, Lindgren G2.


Anim Genet. 2014 Dec;45(6):908-9. doi: 10.1111/age.12228. Epub 2014 Oct 9.

Gaitedness is associated with the DMRT3 'Gait keeper' mutation in Morgan and American Curly horses. Jäderkvist K1, Kangas N, Andersson LS, Lindgren G.


Anim Genet. 2014 Apr;45(2):274-82. doi: 10.1111/age.12120. Epub 2014 Jan 21.

Worldwide frequency distribution of the 'Gait keeper' mutation in the DMRT3 gene. Promerová M1, Andersson LS, Juras R, Penedo MC, Reissmann M, Tozaki T, Bellone R, Dunner S, Hořín P, Imsland F, Imsland P, Mikko S, Modrý D, Roed KH, Schwochow D, Vega-Pla JL, Mehrabani-Yeganeh H, Yousefi-Mashouf N, G Cothran E, Lindgren G, Andersson L.