ArticleBMC genomics2026
Genome-wide association analysis identifies the genetic basis of body size traits in Tan sheep (Ovis aries).
Article in BMC genomics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundTan sheep is a Chinese indigenous breed prized for dual-purpose production of premium pelts and flavorful mutton, featuring a distinctive fat-tailed phenotype. The genetic basis of its body conformation remains largely unexplored.
resultsWe conducted the first whole-genome sequencing-based genome-wide association study in 249 seven-month-old Tan sheep. Comprehensive population genetics analyses confirmed five distinct genetic clusters corresponding to the five sampling sources, supporting the cohort's suitability for the study. Using a mixed linear model, we identified 690 significant SNPs associated with eight traits: 10 for body weight, 2 for body length, 353 for body height, 105 for chest girth, 203 for tail length, 11 for tail circumference, and 6 for cannon circumference. Functional annotation revealed compelling candidate genes, including FBLN1 (weight/height), FGFBP1 (cannon circumference), and MAP3K20/FMNL3 (tail circumference).
conclusionsThese findings illuminate the genetic architecture of growth and tail development in Tan sheep, providing a valuable genomic resource for molecular breeding strategies aimed at enhancing meat production while preserving superior pelt traits.
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