Detection of rs665862918 (15-bp Indel) of the HIAT1 Gene and its Strong Genetic Effects on Growth Traits in Goats
Gao, Jiayang | Song, Xiaoyue | Wu, Hui | Tang, Qi | Wei, Zhenyu | Wang, Xinyu | Lan, Xianyong | Zhang, Bao
The hippocampus abundant transcript 1 (HIAT1) gene, which was detected by the genome-wide identification of selective sweeps among elite goat breeds and water buffalo, is proposed to play an important role in meat characteristics. Four indels of the HIAT1 gene selected from the NCBI and Ensembl databases were detected via a pooling and sequencing strategy. A 15 bp insertion (rs665862918) in the first intron of HIAT1 was selected and classified on an electrophoresis platform in the Shaanbei white cashmere goat (SBWC) population. The correlation analysis revealed that rs665862918 is significantly highly associated with chest width (p = 1.57 × 10⁻⁵), chest depth (p = 8.85 × 10⁻⁵), heart girth (p = 1.05 × 10⁻⁷), body length (p = 0.022), and height at hip cross (p = 0.023) in the SBWC population (n = 1013). Further analysis revealed that individuals with a genotype insertion/insertion (II) of the rs665862918 locus exhibited better growth trait performance than individuals with an insertion/deletion (ID) or deletion/deletion (DD). These findings verify that HIAT1 affects the body size of goats and that rs665862918 could be a potential molecular marker for growth traits in goat breeding.
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