Speed is the only racehorse criterion, exemplified by winning the Triple Crown (the Kentucky Derby, the Preakness and the Belmont Stakes). More speed and less pain can be gained by simply deworming which will improve the circulation IMMENSELY and so lessen colic.

More improvements for the unsanitary sport of kings can be gained by cleaning up the mess that’s inside, e. g., pulling horses. The jockey fakes it. However, even DNA sequencing for speed genes that of course are unknown is being fraudulently advertised on Internet. Horse strategies are ripoffs, as you already know.