(Apr 24, 2025): A sum of 3,390 new QTL/associations have been curated into the database. (New additions less obsolete/retracted ones: Cattle: 1,117; Chicken: 672; Goat: 244; Horse: 257; Pig: 426; Sheep: 674; Rainbow trout: 0 -- Net increase: 3,390). To date, the current total number of QTL in the database: 292,423 [Breakdown by species -- Cattle: 193,453 (on 558 traits); Chicken: 29,116 (on 246 traits); Goat: 2,713 (on 90 traits); Horse: 2,482 (on 71 traits); Pig: 57,041 (on 406 traits); Sheep: 5,417 (on 178 traits); Rainbow trout: 2,201 (on 35 traits)].

In addition, updates have been made to 853 QTL/associations, 82 base traits and 3,771 trait variants on data curated prior to Release 55 (December 2024).

( This is a joint release with the 24th CorrDB release.)

Database developments notes:
(1) Multiple Genome Support: All currently released data in 7 species are lifted to 22 genome assemblies supported on QTLdb with new (April 2, 2025) dbSNP Release 7 data (direct dbSNP mapping data for 19 genomes, and our in-house procedures mapped SNPs for additoinal 3 genomes). (2) JBrowse2: Introduced a year ago (April 2024; QTLdb Release 53) JBrowse2 has been the default QTL/association mapping viewer on genomes (one per species a default genome assembly is supported). The earlier JBrowse (version 1) is completely retired from this site as of this release. Links to JBrowse2 QTL/association mapping views are listed on each QTLdb species home page.

For most recent updates, please refer to What's New page on this site for related items.