全基因组关联研究以确定韩国汉武牛中尸体特征的QTL
Mohammad Zahangir Alam1, Md Azizul Haque1, Asif Iqbal1
1Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Animals : an open access journal from MDPI
|September 9, 2023
概括
这项全基因组关联研究确定了与汉武牛尸体特征相关的遗传标记,如重量和大理石. 这些发现支持基因组选择以改善牛肉生产和繁殖策略.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 基因组选择 基因组选择
背景情况:
- 韩武牛是韩国重要的牛肉品种.
- 尸体的特征对于牛肉的质量和经济价值至关重要.
- 了解这些特征的遗传基础对于有效的育种计划至关重要.
研究的目的:
- 进行全基因组关联研究 (GWAS),以确定与汉武牛关键尸体特征相关的遗传变异.
- 为了估计尸体重量 (CWT),眼肌面积 (EMA),背部脂肪厚度 (BF) 和大理石分数 (MS) 的遗传性.
- 确定影响这些经济重要特征的候选基因.
主要方法:
- 对9302种汉武牛表型的分析.
- 使用Illumina Bovine 50K v.3 SNP芯片进行基因造型.
- 使用GBLUP和贝叶斯B模型估计遗传性.
- 全基因组关联研究 (GWAS) 以确定显著的单核酸多态 (SNP).
主要成果:
- 对CWT,EMA,BF和MS的遗传概率估计在0.36至0.47.
- 在染色体BTA6,BTA13和BTA14上确定了129个常见SNP (使用DGEBV) 和118个常见SNP (使用GEBV).
- 几个候选基因与特定的尸体特征有关,包括*NCAPG*用于CWT和EMA,*CYP7B1*用于BF,和*GNAS*用于MS.
结论:
- 这项研究成功地确定了与Hanwoo牛尸体特征相关的显著基因组区域和候选基因.
- 这些发现为了解牛肉生产特征的遗传结构提供了宝贵的见解.
- 这些结果可以帮助开发更有效的基因组选择策略,用于汉武的育种计划.
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