Cattle QTLdb data summary

As of Dec 29, 2025, there have been 207,081 QTL / eQTL / associations released for public access on the Cattle QTLdb. These data were curated from 1,225 publications and represent 560 base traits, 450 trait variants, and 346 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	4,468
2	4,536
3	4,582
4	5,287
5	10,316
6	35,039
7	4,105
8	2,262
9	2,460
10	3,450
11	7,282
12	2,139
13	3,947
14	24,703
15	3,003
16	3,221
17	6,083
18	3,243
19	4,917
20	7,777
21	4,349
22	1,733
23	2,946
24	1,275
25	3,592
26	14,741
27	1,788
28	1,167
29	5,782
30	1
31	3
X	25,852

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