在IGFBP基因中的多态性影响肉的酸度,颜色和剪切力
Łukasz Migdał1, Anna Migdał1, Sylwia Pałka1
1Department of Genetics, Animal Breeding and Ethology, University of Agriculture in Krakow, Al. Mickiewicza 24/28, 30-059 Krakow, Poland.
Animals : an open access journal from MDPI
|December 9, 2023
概括
研究人员确定了胰岛素样生长因子结合蛋白基因 (IGFBP) 的特定遗传变异,这些变异显著影响子肉质量特征. 在子繁殖计划中,IGFBP5基因多态性显示出改善肉类特性的前景.
科学领域:
- 动物遗传学和动物繁殖
- 肉类科学与技术 肉类科学与技术
- 分子生物学分子生物学
背景情况:
- 子肉是一种有价值的畜牧产品,人们越来越感兴趣了解肉质的遗传基础.
- 胰岛素类生长因子结合蛋白 (IGFBPs) 在生长和发育中起着至关重要的作用,可能会影响肉类的特性.
- 识别IGFBP基因中的遗传多态化可以提供分子标记,以增强肉质特征.
研究的目的:
- 分析五个IGFBP基因 (IGFBP1,IGFBP2,IGFBP4,IGFBP5,IGFBP6) 的遗传序列,以检测子种群中的多态性.
- 调查已识别的多形态与各种尸体和肉质特征之间的关联.
- 确定有希望的基因标记物用于子育种计划中的选择,旨在提高肉质.
主要方法:
- 对IGFBP基因序列的生物信息分析以确定潜在的多态性.
- 协会研究涉及来自不同品种的466只子 (新西兰白×佛兰德巨人杂交,特蒙德白,波皮尔诺白,佛兰德巨人).
- 对尸体和肉类质量特征的分析,包括pH值,颜色 (L*,a*,b*) 和与已识别的基因多态相对应的剪切力.
主要成果:
- 在某些子品种中,特定的IGFBP基因多态和肉质特征之间发现了显著的关联.
- 在IGFBP5基因中的g.158093018A>T多态性对新西兰白×佛兰德巨人杂交和特蒙德白子的pH24值产生了显著影响.
- 其他IGFBP基因的多态性与肉色 (L*,a*,b*) 和剪切力差异有关,这表明有品种特异性的影响.
结论:
- 在IGFBP基因,特别是IGFBP5中的特定多态性与子肉质量的变化有关.
- 鉴定到的IGFBP5多态 (g.158093018A>T) 是一个有前途的候选标记物,用于改善子肉质量的选择策略.
- 进一步将这些遗传标记在育种计划中实施,可能会提高肉类生产效率和消费者满意度.
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