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Temporal variation in genetic diversity and population structure of Burlina cattle breed

机译:Burlina牛品种的遗传多样性和种群结构的时间变化

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摘要

We analysed the temporal variation of inbreeding, genetic variability and population structure in the Burlina (BUR) cattle breed. A total of 279 individuals were chosen for the analysis representing a period of 19 years (1991-2010) and analysed using 24 microsatellite markers. A total of 235 alleles were detected in the population with a mean of 9.79 +/- 3.91 alleles per locus. In the 19-year period, a stable pattern in the mean number of alleles was found. The mean observed heterozygosity was 0.63 and it was slightly lower than the expected in all birth year groups. Neither an increase nor a decrease in heterozygosity and inbreeding estimates were detected over the years, with the exception of the F-IS index which was close to zero in two birth year groups: 2001-2002 and 2006. Absence of bottleneck events was proved and structure analysis revealed an increase in breed complexity over the years and a clear differentiation with the Italian Holstein Friesian cattle breed. Molecular markers were successfully applied in the monitoring of the genetic variability of BUR thus enabling the planning and the application of strategies for the in situ conservation of genetic resources and the improving of breed identity.
机译:我们分析了Burlina(BUR)牛品种的近亲繁殖,遗传变异和种群结构的时间变化。总共选择了279个个体进行了19年(1991-2010年)的分析,并使用24个微卫星标记进行了分析。在人群中总共检测到235个等位基因,每个基因座平均为9.79 +/- 3.91个等位基因。在19年的时间里,平均等位基因数目发现了一个稳定的模式。观察到的平均杂合度为0.63,略低于所有出生年份组的预期。多年来,未检测到杂合性和近亲估计数的增加或减少,除了F-IS指数在两个出生年份组(2001-2002和2006)中接近于零之外。事实证明没有瓶颈事件,并且结构分析表明,多年来这些品种的复杂性有所增加,并且与意大利荷斯坦黑白花奶牛品种有着明显的区别。分子标记已成功地用于监测BUR的遗传变异性,从而能够计划和应用策略来就地保护遗传资源并改善品种特性。

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  • 作者

    Maretto F.; M. Cassandro;

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  • 年度 2014
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  • 原文格式 PDF
  • 正文语种 eng
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