---
title: "1.12.5 Breeding results in racehorses (trotters) (2024)"
canonical: "https://wiki.groenkennisnet.nl/space/TAB/288325904/1.12.5%20Breeding%20results%20in%20racehorses%20(trotters)%20(2024)"
format: markdown
---
In several countries horse racing is a popular sport with an important aspect for the public: gambling on the winner with monetary prices. It is comprehensible that for speed the heritability is not high: for the sprint and middle-distance 0.12 and for the long distance 0.07. The effects of trainers and jockeys and the circumstances on the racetrack have a major effect on the performance of the horse. Despite a low heritability and a long generation interval, a steady rise in estimated breeding value is observed especially for the sprint and middle-distance as can be seen in the figure below.

![image](media://a799f003-dc7c-4d51-860a-73d9d9f558ec)