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

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First-season sire Anodin (Ire) (Anabaa–Born Gold, by Blushing Groom {Fr}) will stand at Haras du Que [read more]

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Jan Vandebos travelled to Ascot for the first time to witness the colt's latest victory The pos [read more]

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Highlights from a thrilling day of racing at British Champions Day and Godolphin on the mark in Aust [read more]

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All the news from a busy five days of trade at Park Paddocks in Newmarket The post Round-up of Tatte [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