使用权重单步全基因组关联研究,研究黄羽肉生长特征的潜在遗传因素
Xiang Fang1, Haoqiang Ye1, Siyu Zhang1
1State Key Laboratory of Livestock and Poultry Breeding, & Lingnan Guangdong Laboratory of Agriculture, South China Agricultural University, & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangzhou 510642, China.
Poultry science
|September 1, 2023
概括
这项研究确定了15号染色体上的关键遗传区域,影响了黄色羽毛肉的生长特征. 这些发现对于加强中国肉养殖计划至关重要.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 禽畜科学 禽畜科学 禽畜科学
背景情况:
- 黄羽毛肉在中国经济上很重要.
- 改善生长特征对中国家禽市场来说非常重要.
- 影响生长特征的遗传因素需要进一步研究.
研究的目的:
- 调查影响黄羽毛肉生长特征的潜在遗传因素.
- 为了提高准确性,使用加权单步全基因组关联研究 (wssGWAS) 方法.
- 确定关键的遗传区域和关联的基因,以提高成长性能.
主要方法:
- 用人加权单步全基因组关联研究 (wssGWAS).
- 分析了9个生长特征,包括不同年龄段的平均每日增长 (ADG) 和体重 (BW).
- 利用了黄色羽毛矮的数据.
主要成果:
- 鉴定了15号染色体 (4.635.03 Mb) 上一个显著的定量特征位置 (QTL) 区域,与多次体重测量相关.
- 检测到七个基因本体学 (GO) 术语和三条与生长特征相关的基因和基因组京都百科全书 (KEGG) 途径.
- 突出了NRAS,TUBB1和ADORA2B等候选基因,可能与肉生长有关.
结论:
- 15号染色体上确定的区域是肉生长特征的关键遗传区域.
- 特定的GO术语和KEGG途径为生长的生物机制提供了洞察力.
- 候选基因为标记器辅助的选择提供了潜在的目标,以提高 brojler 的性能.
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