Horse QTLdb data summary

As of Aug 26, 2025, there have been 2,491 QTL / eQTL / associations released for public access on the Horse QTLdb. These data were curated from 130 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

QTL/associations by Chromosomes

Chromosomes	Number of QTL
1	262
2	81
3	401
4	84
5	66
6	74
7	86
8	89
9	76
10	56
11	103
12	26
13	65
14	60
15	105
16	126
17	64
18	128
19	28
20	83
21	36
22	31
23	93
24	25
25	81
26	41
27	16
28	31
29	13
30	21
31	27
X	13

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