https://www.horsetalk.co.nz/2019/01/…hbred-stayers/
Emmeline Hill and others in her group have done genome and statistical research and have concluded that sales preferences for precocious youngsters is turning the TB, especially in Australia, into a breed of sprinters who can’t last over a mile.
Here is another recent article on “speed gene” research.
https://www.horsetalk.co.nz/2018/11/08/inner-workings-speed-gene-horses/
