A genetic study performed in 1994 revealed a genetic bottleneck in the mid-1900s, withethentirere modern population of Poitevins tracing to one stallion, named Québec, foaled in 1960.
Arabians were also introduced into European race horse breeding, especially in England via the Darley Arabian, Byerly Turk, and Godolphin Arabian, the three foundation stallions of the modern Thoroughbred breed, who were each brought to England during the 18th century.
From a genetic point of view, all modern Thoroughbreds originated from three stallions imported into England in the 17th and 18th century that were crossbred to local mares [ 13].
Aldrup Munkedal is considered the founding stallion of the modern breed.
Thus the practice prevents an oversupply of Thoroughbreds, although modern management still allows a stallion to live cover more mares in a season than was once thought possible.
All modern Thoroughbreds trace back to three stallions imported into England from the Middle East in the late 17th and early 18th centuries: the Byerley Turk (1680s), the Darley Arabian (1704), and the Godolphin Arabian (1729).
All modern Lipizzans trace their bloodlines to these eight stallions, and all breeding stallions have included in their name the name of the foundation sire of their bloodline.
The foundation sire of the modern Suffolk Punch breed was a stallion foaled near Woodbridge in 1768 and owned by Thomas Crisp of Ufford.
The Arabian influence was strongly reinforced in the modern Haflinger by the introduction of the stallion El Bedavi, imported to Austria in the 19th century.
All modern Thoroughbreds can trace their pedigrees to three stallions originally imported into England in the 17th century and 18th century, and to a larger number of foundation mares of mostly English breeding.
