在不同基因型的粗毛胖尾羊群中DGAT1基因多态的作用
L Mukanova1, K Kırıkçı2, T Sadykulov1
1Kazakh National Agrarian Research University, Almaty, Kazakhstan.
Brazilian journal of biology = Revista brasleira de biologia
|August 7, 2024
概括
在哈萨克斯坦和塔吉克斯坦绵羊中调查DGAT1基因多态性发现,对羔羊体重没有显著影响. 然而,CC基因型在特定时间点显示出纯种绵羊和杂交绵羊的活体重增加的趋势.
科学领域:
- 动物遗传学和动物繁殖
- 分子生物学分子生物学
- 畜牧业生产 畜牧业生产
背景情况:
- 该DGAT1基因在脂肪酸代谢和动物脂肪沉积中起着至关重要的作用.
- 了解DGAT1基因多态性对于改善经济上重要的特征,如绵羊品种的羊羔体重至关重要.
- 哈萨克斯坦和塔吉克斯坦的绵羊品种是哈萨克斯坦重要的土著牲畜种群.
研究的目的:
- 在哈萨克斯坦和塔吉克斯坦绵羊品种中研究DGAT1基因多态性 (DGAT1-AluI).
- 确定DGAT1基因型与纯种和杂种羊的羊羔活体重之间的关联.
- 提供关于土著绵羊种群生长表现的遗传基础的见解.
主要方法:
- 从97只纯种 (Edilbay x Edilbay) 和杂种 (Edilbay x Gissar) 羊羔收集了血液样本.
- 对DGAT1-AluI多态性进行基因定型,采用聚合酶链反应-限制片段长度多态性 (PCR-RFLP) 技术.
- 使用统计分析来评估不同时间点的基因型和羔羊活体重之间的关系.
主要成果:
- 在纯种绵羊中观察到三种基因型 (CC,CT,TT),而杂交绵羊表现出两种基因型 (CC,CT).
- 两组中占主导地位的基因型是CC,纯种羊的频率为0.70,杂种羊的频率为0.58.
- 在两种品种组中都没有发现DGAT1基因多态和羊羔活体重之间的显著关联,尽管CC基因型在特定年龄段显示出更高体重的趋势.
结论:
- 在研究的哈萨克斯坦和塔吉克斯坦绵羊品种中,DGAT1-AluI多态性对羔羊活体重没有显著的直接影响.
- 在某些发育阶段,CC基因型可能与略高的活体重有关,这需要进一步调查.
- 建议进行额外的综合性研究,以充分阐明DGAT1/AluI多态性在绵羊生长表现中的作用.
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