Most people would agree that some bloodlines pass down undesireable
traits like club feet, crooked legs and parrot mouths...right. Why wouldn't
some bloodlines pass on desireable traits that would produce (or should I say
would produce if conditioned properly) certain traits that would make a very
competitive endurance horse? I don't see how it can only work one way.
Also, why are those of you out there with mares (retired or resting
endurance mares) breeding those animals. They must have traits that you
would like to see passed on in their offspring. If you didn't believe that
your mare would pass on something worthwhile, you would go out and buy a
foal that is already on the ground.