ABSTRACT

The Swedish Mountain (Fjäll) cattle and the subpopulation Fjällnära originates from northern Sweden. They are differentiated from both traditional and commercial cattle from southern Sweden. We analysed data from the GGP HD150k SNP array and investigated genetic diversity and differences between Fjäll and Fjällnära, and between different groups of Fjällnära. We found that the Fjällnära can be divided into four groups, which are differentiated from each other and from the other Fjäll cattle. We also compared allele frequencies between different groups of Fjäll and Fjällnära for some of the functional SNPs included in the SNP array. Interestingly, the B allele of Beta lactoglobulin has a very high frequency (94%) in the Fjällnära cattle, which is significantly different from the frequency in the Fjäll cattle (60%). Comparing older samples of Fjäll cattle with more recent samples, we found a significant increase in the frequency of the B allele in Fjäll cattle.

摘要

瑞典山（Fjäll）的牛群和Fjällnära子群起源于瑞典北部。它们与瑞典南部的传统牛和商业牛区分开来。我们分析了来自GGP HD150k SNP阵列的数据，并研究了Fjäll和Fjällnära之间以及Fjällnära不同群体之间的遗传多样性和差异。我们发现菲亚尔牛可以分为四类，彼此不同，也不同于其他菲亚尔牛。我们还比较了Fjäll和Fjällnära不同组之间的SNP阵列中某些功能性SNP的等位基因频率。有趣的是，β乳球蛋白的B等位基因Fjällnära牛的频率很高（94％），这与Fjälln牛的频率（60％）明显不同。将Fjäll牛的旧样本与最新样本进行比较，我们发现Fjäll牛中B等位基因的频率显着增加。