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Updated: Jan 10, 2026

Pre-Implantation Genetic Testing for Aneuploidy on a Semiconductor Based Next-Generation Sequencing Platform
Published on: August 17, 2022
Genome assembly and structural variations of Guyuan cattle.
Shuang Liu1,2, Huixuan Yan3, Yuan Liu1
1Key Laboratory of Molecular Cell Breeding of Ruminants in Ningxia Hui Autonomous Region, College of Animal Science and Technology, Ningxia University, Yinchuan, 750021, China.
The Guyuan cattle genome was sequenced, revealing its genetic makeup and structural variations. This foundational research enhances resources for indigenous Chinese cattle breeding and genetic improvement.
Area of Science:
- Genomics
- Animal Genetics
- Comparative Genomics
Background:
- Guyuan cattle represent a unique genetic resource bridging northern and central Chinese breeds.
- Genomic data for indigenous Chinese cattle, including Guyuan cattle, is currently limited.
- Guyuan cattle are recognized for valuable traits like disease resistance and climbing ability.
Purpose of the Study:
- To assemble and characterize the genome of Guyuan cattle.
- To identify structural variations within the Guyuan cattle population.
- To provide foundational genomic data for Guyuan cattle breeding and conservation.
Main Methods:
- PacBio HiFi sequencing for genome assembly.
- Oxford Nanopore sequencing for whole-genome sequencing of individuals.
- Identification and analysis of structural variations (SVs).
Main Results:
- Assembly of the Guyuan cattle genome (Guyuan_Btau_1.0) with a size of 2.86 Gb and contig N50 of 85.27 Mb.
- Detection of 65,273 structural variations (SVs) in 10 Guyuan cattle genomes.
- Identification of a specific 1,290 bp deletion in the IGF2BP2 gene shared across Guyuan cattle.
Conclusions:
- This study significantly enriches the genomic database for indigenous Chinese cattle.
- The generated genomic resources provide essential data for the genetic improvement and breeding strategies of Guyuan cattle.
- The identified genetic variations offer insights into the unique traits of Guyuan cattle.
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