Heritability of racing performance in the Australian Thoroughbred racing population.

Abstract:

:Performance data for 164,046 Thoroughbreds entered in a race or official barrier trial in Australia were provided by Racing Information Services Australia. Analyses estimating the heritability for a range of racing performance traits using a single-trait animal model were performed using ASREML-R. Log of cumulative earnings (LCE; 0.19 ± 0.01), log of earnings per race start (0.23 ± 0.02) and best race distance (0.61 ± 0.03) were all significantly heritable. Fixed effects for sex were significant (P < 0.001) for all performance traits aside from LCE (P = 0.382). With the exception of annual earnings, trainer was also significant for all performance traits. As the application of modern genetic selection methodologies continues to gain popularity in the racing industry, contemporary heritability estimates from the current population of Thoroughbreds will play a vital role in identifying which traits are better suited to selection and in the development of more accurate genomic evaluations for racing performance.

journal_name

Anim Genet

journal_title

Animal genetics

authors

Velie BD,Hamilton NA,Wade CM

doi

10.1111/age.12234

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

23-9

issue

1

eissn

0268-9146

issn

1365-2052

journal_volume

46

pub_type

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