乳酸铁素 (LF) 基因与牛奶产量,牛奶成分和体细胞数量的多态性和关联性研究在牛犊山羊中
Lionel Kinkpe1, Rajwali Khan2, Syed Muhammad Suhail1
1Department of Livestock Management, Breeding and Genetics, The University of Agriculture, Peshawar, 25130, Pakistan.
Tropical animal health and production
|November 23, 2023
概括
这项研究在Beetal山羊的LF基因促进体中发现了新的遗传标记物. 特定的基因型 (GG,TT,AA) 提高牛奶质量,减少体细胞计数 (SCC),有助于品种改进.
科学领域:
- 动物遗传学动物遗传学
- 分子生物学分子生物学
- 乳制品科学 乳制品科学
背景情况:
- 身体细胞计数 (SCC) 和牛奶质量是乳山羊健康和生产力的关键指标.
- 在LF基因促进者的遗传变异可以影响这些经济上重要的特征.
研究的目的:
- 在LF基因促进器区域中识别新型单核酸多态 (SNPs).
- 调查这些SNP与SCC和牛奶质量特征的相关性.
- 分析SNP对转录因子 (TF) 结合部位的影响.
主要方法:
- 聚合酶链反应 (PCR) 放大和对LF基因促进者的序列分析.
- 鉴定到的SNP的基因定型.
- 统计分析以将基因型与SCC和牛奶质量参数 (密度,蛋白质,产量,乳糖) 相对应.
- 在TF结合部位变化的基分析.
主要成果:
- 发现了四种新的SNP:g.98T>C,g.143T>A,g.189AC>A,以及g.346A>G.
- 基因型TT (SNP1),AA (SNP3) 和GG (SNP4) 与降低SCC和改善牛奶质量特征有关 (P < 0.01).
- 基因型CC (SNP2) 和CA (SNP4) 对牛奶质量产生了负面影响,而TC (SNP2) 和GG (SNP4) 则降低了SCC并增加了乳糖.
- SNP分析显示了TF结合点的变化,g.98T>C和g.346A>G的增长,g.143T>A和g.189C>A的损失.
结论:
- 在LF基因促进体中鉴定到的SNP是新鲜的,并且与Beetal山羊SCC和牛奶质量的显著变化有关.
- 特定的基因型 (GG,TT,AA) 显示出作为标记器辅助选择的遗传标记物的潜力.
- 这些发现可以为旨在提高牛奶产量和牛奶质量的育种计划做出贡献.
更多相关视频
04:41Measuring Lactase Enzymatic Activity in the Teaching Lab
Published on: August 6, 2018
113.8K
07:46Author Spotlight: Improving Beef Cattle Nutrition and Production with a Focus on Feed Efficiency and Meat Quality Traits Through Advanced Biochemical and Molecular Assays
Published on: July 12, 2024
558
相关概念视频
Cloning of Dolly the Sheep
3.8K
The first successfully cloned mammal was Dolly, a sheep, born on 5th July 1996 at Roslin Institute, Scotland. The cloned sheep was named after the American singer Dolly Parton. Dolly lived for seven years and died of respiratory complications, which is speculated to be due to the actual age of her DNA. Because the DNA in cloned cells belongs to an older individual, the cloned individual’s life expectancy may be affected. Indeed, analysis of Dolly’s DNA revealed shorter...
3.8K
Operons
49.1K
Prokaryotes can control gene expression through operons—DNA sequences consisting of regulatory elements and clustered, functionally related protein-coding genes. Operons use a single promoter sequence to initiate transcription of a gene cluster (i.e., a group of structural genes) into a single mRNA molecule. The terminator sequence ends transcription. An operator sequence, located between the promoter and structural genes, prohibits the operon’s transcriptional activity if bound by...
49.1K
