在不同的选择方法下,卡拉库尔羊的繁殖特征的遗传
Zh Parzhanov1, N Azhimetov2, Ye Kistaubayev2
1Shymkent University, Faculty of Natural Sciences and Humanities, Shymkent city, the Republic of Kazakhstan.
Brazilian journal of biology = Revista brasleira de biologia
|February 29, 2024
概括
卡拉库尔羊的遗传多样性已经下降,只剩下黑色和灰色种群. 关于灰色羊羔遗传性的研究表明,在育种选择中,毛皮颜色的遗传比率一致.
科学领域:
- 动物遗传学动物遗传学
- 畜牧养殖 畜牧养殖 畜牧养殖
- 保护遗传学 保护遗传学
背景情况:
- 卡拉库尔羊群在过去一个世纪中经历了遗传多样性的显著减少.
- 这种品种现在主要由黑色和灰色毛皮颜色的小种群代表,限制了繁殖进步,并面临灭绝的风险.
- 保护和利用这些剩余种群的遗传资源对于卡拉库尔羊的繁殖工作至关重要.
研究的目的:
- 为了研究灰色卡拉库尔羊羔的繁殖特征的遗传性.
- 分析不同选择选择对后代毛皮颜色遗传的结果.
- 评估卡拉库尔绵羊种群对毛皮颜色的遗传贡献.
主要方法:
- 在吉尔吉尔地区索扎克区的"库姆肯特"基地农场进行了一项研究.
- 实施了两种不同的选择变体,包括灰色和黑色的卡拉库尔羊,具有特定的标记和色素.
- 记录并分析了每个选择变种的后代 (羊羔) 的毛皮颜色比.
主要成果:
- 灰色和黑色毛皮颜色的继承在选择选项中遵循了一致的比例.
- 在第一个选择变体 (灰色公羊×黑色母羊) 中,50.6%的后代是灰色的.
- 在第二种选择变体 (黑色公羊×灰色母羊) 中,49.6%的后代是灰色的,黑色后代的百分比分别约为49.4%和50.4%.
结论:
- 卡拉库尔羊的皮肤颜色遗传是可以预测的,并且在不同的选择配对中一致.
- 这项研究为旨在保护和管理卡拉库尔羊遗传资源的育种计划提供了有价值的数据.
- 了解遗传性是维持黑色和灰色卡拉库尔羊可行的种群的关键.
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