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ORIGINAL RESEARCH article

Front. Vet. Sci.

Sec. Livestock Genomics

This article is part of the Research TopicGenomic Selection and Evolution in Domestic AnimalsView all 5 articles

Design, Validation, and Application of a 1K Liquid Chip for Genome-Wide Association Analysis in Alpine Merino Sheep

Provisionally accepted
  • Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China

The final, formatted version of the article will be published soon.

Because wool is an important animal fiber and mutton is rich in nutrients, fine wool sheep are one of the most economically important livestock. China has been selecting and breeding high-quality fine wool sheep breeds since the 1950s and is the largest processing and consuming country for fine wool sheep. In this study, blood samples were collected from Alpine Merino sheep (AMS), Chinese Merino sheep (CMS), Aohan fine wool sheep (AHS), and Qinghai fine wool sheep (QHS). Genomic DNA was extracted and subjected to high-depth genome resequencing. GenoBait technology was used for probe design and site optimization, followed by synthesis of a low-density liquid-phase chip. Finally, 409 AMS were randomly selected to verify the chip. The results showed that a total of 1012 single-nucleotide polymorphism sites (SNPs) were screened and retained for the synthesis of a low-density liquid chip for genome-wide selection and population genetics structure analysis. This chip can provide a useful tool for genome analysis of fine wool sheep and lay a solid foundation for subsequent breeding work.

Keywords: Fine wool sheep, targeted sequencing, genotyping, Liquid chip, Genome-WideAssociation Analysis

Received: 22 Aug 2025; Accepted: 10 Nov 2025.

Copyright: © 2025 TINGTING, Yuan, Jianbin and Bohui. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: GUO TINGTING, guotingting@caas.cn

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