The International Stud Book Committee

Welcome to the website of the International Stud Book Committee, the body which establishes the standards by which all Thoroughbred Stud Books agree to operate. The ISBC came into being in 1976 (originally as the “International Stud Book Conference”) and has continued to meet each year since then to discuss matters of global Thoroughbred Stud Book operation.

ISBC Mission

“The mission of the ISBC is to develop and promote the highest standards of Stud Book operation to safeguard the integrity of the Thoroughbred breed.”

What We Do

of Operation

Continually monitor, review and improve standards for operating and maintaining a Thoroughbred Stud Book through the Requirements and Guidelines for Gaining and Maintaining Approval as a Thoroughbred Stud Book and the relevant Articles of the IABRW


Monitor, review and improve standards for breeding, identification and international movement of Thoroughbred horses to facilitate the international trade of Thoroughbreds for breeding and competition


Ensure awareness of the use of future technologies (e.g. gene-doping, gene-therapy) and their potential effects on the integrity of the Thoroughbred, and to determine guidelines for their application

Stud Books

Work closely with emerging Stud Book Authorities to ensure that they meet the required standards of Stud Book procedures for ISBC Approval as a Thoroughbred Stud Book


Build stronger relationships between Stud Book communities and between all Approved Stud Books worldwide

Publication of
Foal Crop Data

Encourage the timely and accurate publication of annual Thoroughbred foal crop records and to ensure circulation to all Approved Stud Books worldwide

Sharing of
Statistical Information

Collate and disseminate statistical information on worldwide Thoroughbred breeding

Stud Book
Compliance Visits

Endeavour to complete a Compliance Liaison visit for each Approved Stud Book worldwide

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In The News

  • Thoroughbred Daily News
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- The TDN

Horse Races Now (HRN) and Thoroughbred Daily News (TDN) have formed a News Partnership. Subscribers [read more]

- Alan Carasso

Part exercise rider, part assistant trainer and part fledgling bloodstock agent who comes with a dee [read more]

- The TDN

Woodbine Entertainment will introduce a pair of six-furlong turf sprints for 2-year-olds to its Thor [read more]

- Staff writer

Khalid Abdullah’s filly named Horse of the Year [read more]

- Staff writer

Father and son dominate race that stops a nation [read more]

- Staff writer

Frankel’s son in Champion Stakes demolition [read more]

For more information on the International Stud Book Committee or to reach the ISBC Secretariat please contact Lucy Rose, ISBC Secretary General, on