Will capping number of mares bred by stallions improve thorougbreds?

Last week the Jockey club proposed putting a cap on the number of mares an individual stallion can cover in a season. The reasoning? To improve the genetic diversity of the thoroughbred breed. A press release from the Jockey Club noted, “43 stallions reporting 140 or more mares” in their 2018 books, and those stallions […]

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