In researching EPDs in Alpaca I discovered a wealth of research and information about Cattle, Pigs and Sheep. But there is also quite a bit of activity in breeding value estimation in the horse world, but most of it is restricted to Europe and currently, especially Ireland where there is a very talented and influential horse geneticist called Paddy Cunningham.

There has never been much enthusiasm for formal, performance-based genetic evaluation in horses in the US, even though it was shown over 25 years ago that racing performance of Standardbred racehorses was quite heritable and would almost certainly respond well to selection.

The show and conformation mentality is strong in most US horse associations, although there is some interest in warmbloods. The Jockey Club, which oversees Thoroughbred Racing is only concerned about competitive races.

Here are some sites for those that are interested:

Irish Horses

More Irish genetics

Genetics to select jumping horses

Horse Magazine

Haflinger horses

Breeding the German Riding Horse