Horse QTLdb data summary

As of Dec 29, 2025, there have been 2,545 QTL / eQTL / associations released for public access on the Horse QTLdb. These data were curated from 131 publications and represent 71 base traits, 21 trait variants, and 0 eQTL genes.

Data summary selector:

Data by Traits
Experiments by Traits
Data by Trait Variants
Experiments by Trait Variants
Data by Trait Types
Data by Trait Classes

of trait names by their frequency in QTL/association reports

Genome assemblies supported
Data by Chromosomes
Data by Marker Types
Data by Publishing Journals
Data by Years Published
Data Sources by Years Published
Data in Curation Pipeline
Types of structural genome information aligned against the QTL/association maps

Trait types with the most curated data

Trait types	Number of QTL
Disease & injury	961
Size	738
Gaits	305
Racing ability	139
Coat color	117
Fertility	72
Conformation	50
Semen quality	37
Hair/coat quality	31
Behavior	21
Lactation	17
Jumping ability	16
Immune capacity	15
General health parameters	15
Blood parameters	6
. . .	. . .

NOTE: On this site, the term "QTL" may have collectively included quantitative loci, SNP associations, and eQTL data.