Retirement Benefits for Racehorses: Understanding and Supporting Gut Health in Retirement

Identifying age related changes in the gut microbiota of retired thoroughbred racehorses and potential associations with welfare status.

Start date

January 2026

End date

January 2030

Overview

British horseracing is committed to ensuring that racehorses can have a healthy retirement and second careers after their racing careers are over. Ensuring a healthy retirement is an important part of the sport’s social licence to operate. We know that in humans the gut microbiome changes significantly with age and can have a range of influences on health and quality of life. This project is designed to evaluate how the gut microbiome of racehorses changes with age and how this affects their welfare and their retraining for second careers. As part of this project, we will evaluate the potential impact of probiotic supplementation on gut health and on horse welfare.

Aims and objectives

  1. Characterise changes in the gut microbiome of retired racehorses up to 30 years old
  2. Describe associations between the welfare of horses undergoing retraining their gut microbiome
  3. Evaluate the effect of dietary probiotics on the gut microbiome and welfare of retired racehorses. 

Funding amount

£196,000

Funders

Team

Partners

David Catlow

Retraining of Racehorses

Philippa Gilmore

Retraining of Racehorses

Professor Sarah Wolfensohn

Welfare Assessment Technologies

Research groups and centres

Our research is supported by research groups and centres of excellence.

Horse Microbiome Research Group

Research themes

Find out more about our research at Surrey: