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As of Aug 26, 2025, there have been 29,328 QTL / eQTL / associations
released for public access on the Chicken QTLdb. These data were curated from
420 publications and represent 243 base traits,
270 trait variants, and 40 eQTL genes.
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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
- 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
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Trait variants with the most curated data
Trait variants
| Number of QTL
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| Body weight at 42 days | 420,824 |
| Body weight at 70 days | 359,240 |
| Body weight at 56 days | 328,448 |
| Body weight at 84 days | 297,656 |
| Body weight at 28 days | 277,128 |
| Body weight at 35 days | 225,808 |
| Body weight at 21 days | 205,280 |
| Body weight at 14 days | 184,752 |
| Body weight at hatch | 174,488 |
| Body weight at 49 days | 164,224 |
| Body weight at 63 days | 164,224 |
| Body weight at 77 days | 102,640 |
| Body weight at 112 days | 92,376 |
| Body weight at 7 days | 82,112 |
| Body weight at first egg | 82,112 |
| Body weight at 98 days | 71,848 |
| Body weight at 40 days | 61,584 |
| Body weight at 46 days | 41,056 |
| Body weight at 90 days | 41,056 |
| . . . | . . . |
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NOTE: On this site, the term "QTL" may have collectively included quantitative loci,
SNP associations, and eQTL data.
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of trait names by their frequency in QTL/association reports