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Genetic Structure Analysis of the Pura Raza Español Horse Population through Partial Inbreeding Coefficient Estimation

机译:Pura RazaEspañol马群通过部分近亲系数估计分析遗传结构分析

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摘要

The Pura Raza Español horse (PRE) is an autochthonous Spanish horse recognized as an official breed since the 15th century. In 1912, with the creation of its studbook, it became a closed population (only animals belonging to the breed acts as breeders: 23,530 stallions and 75,870 mares), in which relatedness between individuals and inbreeding has tended to increase. Inbreeding estimation measures the probability in an individual of possessing, in one gene, two identical alleles derived from a common ancestor. Each common ancestor provides part of the descendant’s total inbreeding (partial inbreeding coefficient, F ). This work analyzes the F , calculated using a recently developed approach (based on founders and Mendelian sampling of the non-founders) in the whole PRE population. The identification of 10,244 common ancestors and their relationship with the seven most influential individuals of the breed allowed us to determine that a genetic bottleneck due to an unequal contribution over the generations occurred. Computing F has being an important tool to determine which are the breeding animals, with more or less massive use, whose are determining a loss of genetic variability in the population at each moment and has enabled us to expand our knowledge about PRE genetic demographic evolution.
机译:Pura RazaEspañol马(前)是自15世纪以来被认可为官方品种的自动紧张的西班牙马。 1912年,随着其立练的创造,它成为一个封闭的人口(只有属于该品种的动物是育种者:23,530种马匹和75,870母舰),其中个人和近亲繁殖之间的相关性往往增加。近亲繁殖估计测量在一个基因中具有源自共同祖先的两个相同等位基因的个人中的概率。每个常见的祖先都提供了后代的总近亲繁殖(部分近亲繁殖系数,f)的一部分。这项工作分析了使用最近开发的方法(基于非创始人的创始人和孟德尔)在整个预先群体中计算的F.鉴定10,244个共同的祖先及其与七种最具影响力的品种的关系使我们能够确定由于对世代的不平等贡献导致的遗传瓶颈。计算F是确定哪种重要的工具,以确定哪些是繁殖动物,具有或多或少大量使用,其正在确定每一刻的人口中的遗传变异性的损失,并使我们能够扩大我们对预遗传人口进化的知识。

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