在杂交的肉牛种群中,LEP和TG5基因多态的遗传特征
Dinh Van Dung1, Duong Thi Huong1, Than Thi Thanh Tra1
1University of Agriculture and Forestry, Hue University, Hue City, Vietnam.
Journal of advanced veterinary and animal research
|February 27, 2025
概括
这项研究分析了越南肉牛中单核酸多态基因 (SNP) 的勒素 (LEP) 和胆固醇蛋白 (TG5) 基因. 识别这些SNP可以帮助基因组选择改善牛肉质量和经济价值.
科学领域:
- 动物遗传学动物遗传学
- 分子生物学分子生物学
- 量化遗传学 量化遗传学
背景情况:
- 肉牛养殖计划旨在增强生产特征.
- 遗传标记,如单核酸多态 (SNP),对于基因组选择至关重要.
- 瘦素 (LEP) 和胆固醇蛋白 (TG5) 基因与牛的经济重要特征有关.
研究的目的:
- 为了研究单核酸多态性 (SNPs) 在素 (LEP) 基因的内部2区域和球蛋白 (TG5) 基因的5'未翻译区域.
- 为了分析这些基因多态化在越南中部的四个杂交的肉牛种群.
- 评估这些SNP在肉牛的基因组选择中的潜力.
主要方法:
- 从200个尾毛根样本中提取了基因组DNA,这些样本来自四个杂交种群 (白蓝色比利时 × 莱布拉汉,沙罗莱斯 × 莱布拉汉,干旱主 × 莱布拉汉,红色格斯 × 莱布拉汉).
- 聚合酶链反应-限制片段长度多态 (PCR-RFLP) 用于分析LEP和TG5基因多态.
- 限制酶Sau3AI用于LEP和PsuI用于TG5被使用.
主要成果:
- 在所有种群中都存在LEP/Sau3AI和TG5/PsuI SNP. LEPA异位基因比LEPB更频繁,LEPAA是最常见的基因型.
- 在查罗莱·莱·布拉汉 (CLB) 种群中,LEPBB基因型不存在. 在CLB和Blanc Bleu Belge (BLB) 种群中观察到LEP/Sau3AI的哈迪-韦恩伯格平衡.
- 在所有组中,TG5CT基因型占主导地位,没有观察到TG5TT基因型. 在任何人群中,对于TG5/PsuI,都没有达到哈迪-韦恩伯格平衡. 红色羊 × 赖婆罗门 (RLB) 和BLB中的LEP/Sau3AI,以及所有组中的TG5/PsuI的多态度水平均为中度.
结论:
- LEP和TG5基因SNP是肉牛基因组选择的有价值的标记物.
- 增加TG5T等位基因的频率可以增强牛肉大理石化和其他质量特征.
- 这些遗传洞察力可以提高牛肉的质量和牛业的经济回报.
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