ABSTRACT

The Fjord horse originates from Norway but forms a global population due to several small populations in foreign countries. There exists no information about the additive relationship and the genetic variance between these subpopulations. By collecting blood samples from Norwegian and Swedish Fjord horses, a sample of 311 Norwegian and 102 Swedish horses gave 485,918 SNPs available for analysis. Their inbreeding coefficients were calculated and compared to the pairwise coancestry and the shared genomic segments. The effective population size was almost similar with the two methods in the Norwegian Fjord horse population (63 and 71), but very different in the Swedish population (269 and 1136) and unprecise due to a much smaller number of observations. The study showed that coancestry from shared genomic segments can be used to estimate additive genetic relationship and genetic variation within and between the global populations of the Fjord horse.

摘要

峡湾的马起源于挪威，但由于外国的人口稀少而形成了全球人口。没有关于这些亚群之间的加性关系和遗传变异的信息。通过从挪威和瑞典峡湾马中采集血样，对311匹挪威和102匹瑞典马样品进行了分析，得出485,918个SNP。计算了它们的近交系数，并将其与配对配对和共享的基因组片段进行比较。在挪威峡湾的马群中，有效种群的数量几乎与两种方法相似（63和71），但在瑞典种群中（269和1136）却有很大差异，并且由于观察数少而不精确。