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Abstract

BackgroundSince the 1950s, the Norwegian-Swedish Coldblooded trotter (NSCT) has been intensively selected for harness racing performance. As a result, the racing performance of the NSCT has improved remarkably; however, this improved racing performance has also been accompanied by a gradual increase in inbreeding level. Inbreeding in NSCT has historically been monitored by using traditional methods that are based on pedigree analysis, but with recent advancements in genomics, the NSCT industry has shown interest in adopting molecular approaches for the selection and maintenance of this breed. Consequently, the aims of the current study were to estimate genomic-based inbreeding coefficients, i.e. the proportion of runs of homozygosity (ROH), for a sample of NSCT individuals using high-density genotyping array data, and subsequently to compare the resulting rate of genomic-based F (F-ROH) to that of pedigree-based F (F-PED) coefficients within the breed.ResultsA total of 566 raced NSCT were available for analyses. Average F-ROH ranged from 1.78 to 13.95%. Correlations between F-ROH and F-PED were significant (P

Published in

Genetics Selection Evolution
2019, volume: 51, article number: 22
Publisher: BMC

SLU Authors

UKÄ Subject classification

Genetics and Breeding in Agricultural Sciences

Publication identifier

  • DOI: https://doi.org/10.1186/s12711-019-0465-7

Permanent link to this page (URI)

https://res.slu.se/id/publ/100555