Chicken QTLdb data summary

As of Apr 20, 2026, there have been 30,465 QTL / eQTL / associations released for public access on the Chicken QTLdb. These data were curated from 423 publications and represent 244 base traits, 283 trait variants, and 40 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	6,559
2	1,205
3	603
4	13,716
5	1,134
6	425
7	400
8	211
9	226
10	270
11	193
12	249
13	282
14	143
15	793
16	91
17	98
18	96
19	142
20	433
21	160
22	46
23	67
24	131
25	38
26	115
27	457
28	255
30	11
32	1
33	51
Z	1,651

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