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
  • Owner Breeder
- Tom Frary

He may have taken a while to get there, but Saturday saw Kessaar (Ire) (Kodiac {GB}) place himself f [read more]

- Tom Frary

One of the genuine front-runners leading up to the June 2 G1 Epsom Derby, Bernard Kantor’s Young Ras [read more]

- The TDN

After a banner day at the races Thursday with two impressive new winners, young sire Mucho Macho Man [read more]

- Zoe Vicarage

From a dazzling display in Australia, success on Town Moor and gutsy wins in Ireland – look back at [read more]

- Zoe Vicarage

Ma Filleule and Une Artiste are among the stars to be offered at the Arqana December Breeding Stock [read more]

- Zoe Vicarage

The return of superstar filly Enable was one of the stars to shine in the weekend's Group/Grade [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