What is the difference between stud mare and thouroughbred.which ones are used in racing?

Question

What is the difference between stud mare and thouroughbred.which ones are used in racing?

Answer 1

All horses that race under Jockey Club rules are Thoroughbreds, it is a particular breed, not a generic term for a group of horses.

Therefore all "stud mares" (the correct term is broodmare) that are breeding to produce racehorses MUST be Thoroughbreds, otherwise the progeny cannot race.

Answer 2

a stud is a horse with good qualities used for breeding. A mare is a female horse. A thorough bred is the highest type horse raced bred for speed and endurance on various races, short or long. In a thoroughbred race. Other horse races may be various breeds.

Answer 3

Question for MissNewman, aren't quarter horses under jockey club rules.  Certainly they do not race against thoroughbreds, but they are great in their on right.