Jersey Act Introduced to Prevent Registration of American – Bred Horses of Impure Bloodlines

AceHistoryDesk – The Jersey Act was introduced to prevent the registration of most American-bred Thoroughbred horses in the British General Stud Book. It had its roots in the desire of British horse breeders to halt the influx of American-bred racehorses of possibly impure bloodlines during the early 20th century

Many American-bred horses were exported to Europe to race and retire to a breeding career after several U.S. states banned gambling, which depressed Thoroughbred racing and breeding in the United States. The loss of breeding records during the American Civil War and the late beginning of the registration of American Thoroughbreds led many in the British racing establishment to doubt that the American-bred horses were purebred.

In 1913, the Jockey Club and the owners of the General Stud Book implemented a rule named after the Jockey Club’s senior steward, Lord Jersey. This rule prohibited the registration of horses in the book unless all of their ancestors had been registered. Despite objections from American breeders, this rule was enforced until 1949. Several factors led to the relaxation of this rule, including the racing success of ineligible horses in Europe and the detrimental impact on British and Irish breeders due to the unavailability of French Thoroughbreds during and after the Second World War. By 1949, the distant, impure ancestors of American bloodlines had become less significant in most horses’ ancestry.

Background

Before the introduction in 1913 of what became popularly known—"with questionable taste" according to a correspondent writing in The Times—as the Jersey Act, Thoroughbred horses in the United Kingdom were registered in the General Stud Book, the studbook for British and Irish Thoroughbreds. The rules allowed a horse to be registered if all of its ancestors were registered in the General Stud Book or if it had been bred outside of Britain or Ireland and was registered in the studbook of its country of origin. Overall, the General Stud Book had the most stringent rules for registration of Thoroughbreds at the time, around 1900; other countries, including the United States, France, Australia and Russia, were considered by the British and Irish to be much laxer and to have allowed some non-Thoroughbred horses into their national stud books. 

The outlawing of race-track betting in parts of the United States between 1900 and 1913 led to a large influx of American-bred horses into Britain and Ireland, giving rise to fears among British breeders that they would be swamped by the American bloodlines and their stock would become worthless. The biggest state to outlaw betting was New York, which passed the Hart–Agnew Law in 1908.

By 1911, the average price for yearlings sold at auction was at a record low of $230 ($7,520 as of 2024). Before 1900, most horses were imported into Britain to race and rarely stayed for a breeding career. The outlawing of gambling resulted in many American horses that could no longer be supported, and many were shipped to Europe for racing. Because of the downturn in the horse market in the United States, it was assumed that most of the horses sent to Europe would stay there permanently and, after retirement from the racetrack, would enter their breeding careers outside of the United States.[2][3] Between 1908 and 1913, over 1500 Thoroughbreds were exported from the United States. Those exported included 24 horses who had been or would later become champions, including Artful, Colin, Henry of Navarre, Peter Pan, and Ballot. 

The American Stud Book, the registration book for American Thoroughbreds, was not founded until 1873, much later than the General Stud Book, and the registration rules required only that a horse have five generations of ancestors in the American Stud Book or other national stud books, unlike the General Stud Book rules. In addition, many breeding records were destroyed during the American Civil War, as fighting occurred in noted American Thoroughbred breeding centres. According to the General Stud Book rules, most American Thoroughbreds in 1913 could not show an unblemished pedigree. Adding to the problem was that American horses were beginning to win the big horse races in England, starting with the Iroquois, who won the 1881 Epsom Derby. 

At Sterling Publishing & Media Service Agency, we value transparency and accountability. We want to inform you that we are not responsible for any external content, links, or posts. We are dedicated to providing exceptional services and sincerely appreciate your support. Thank you.