Australian Stud Book

The Australian Stud Book (ASB), is the body responsible for ensuring the integrity of Thoroughbred breeding in Australia. Australia is the second-largest Thoroughbred breeding country in the world behind the US. The principal functions of the ASB include identification procedures along with DNA testing of mares and foals and the recording of a mare’s progeny and stallion statistics. In 2003 the ASB introduced microchips for foals, which is the most secure means of horse identification when and combined with freeze branding, provides racing officials with the most dependable identification system in the world.

The ASB regularly produces printed Stud Books. These books are now over 3,000 pages, with volume 42 of the ASB containing the breeding records of 43,000 mares and 70,000 of their named offspring. The ASB also controls the comprehensive online database which contains the records of over 860,000 horses. This database includes every Australian foal born since 1972 and includes 28,000 winners of major races in Australia and around the world. Basic horse information is free, but there is subscription access to the Stud Book website where extensive data is available for a modest fee.

The Stud Book of New South Wales by Fowler Boyd Price was published in 1859, and was the first official attempt to document the pedigrees of the colony's bloodhorses. The Victorian Stud Book was then published in Volumes 1-2 which were edited by William Levey to the year 1864 and volumes 3-4 edited by William Cross Yuille to the year 1874. The Australian Stud Book (ASB) began in 1878 as a private venture by A. & William C. Yuille, Melbourne bloodstock agents who published nine volumes. New Zealand horses were included in the ASB until Volume VII appeared in 1900. The copyright was sold in 1910 to the Australian Jockey Club (AJC) and the Victoria Racing Club (VRC), who now administer matters concerning the breeding of Thoroughbred racehorses.

In the 1880s it was decided that all Thoroughbreds foaled in Australia and New Zealand should have their official ages calculated from 1 August.

Similar world stud books give one another more or less complete reciprocation. Exceptions to this include the following early Colonial mares which did not trace to the General Stud Book (GSB), but are accepted by the ASB owing to the performances of their progeny:

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