Diversidad genética de ovinos criollos colombianos

Pub Date : 2020-09-18 DOI:10.21897/RMVZ.2185

Nini Vivas A, V. Landi, Jaime Eduardo Muñoz Florez, Moris De Jesús Bustamante Yánez, Luz Álvarez Franco

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引用次数: 11

Abstract

Ojective. genetical characterization the creole Colombian sheep and their relationships with breeds of European origins. Materials and methods. Blood samples of 261 sheeps from the following populations were collected: Criollos de Lana (CL), Mora Colombiana (MC), Criollo de Pelo (CP), criollos mestizos (Mes), Hampshire (Hamp), Corriedale (Corr), Katahdin (Kath), Pelibuey (Pel), in 40 farms of 8 departments (Cordoba, Magdalena, Cesar, Atlantico, Valle del Cauca, Narino, Boyaca, Tolima) and 30 samples of Merino Spanish, Merino Precoz (MP), Merinofleischschaf (MF), Segureno (Seg) and Uda (UD) de Nigeria. A total of 15 microsatellites markers were included inthis study. Results. In creole sheep, the average number of alleles was found 6.20±1.48 (CL), 7.27±1.39 (CP) y 3.60±1.55 (MC); high genetic diversity found (high heterozygosities 75%), negative values in the FIS revealed high degree of introgression; furthermore the FST revealed genetic structure in both: Creole sheep (FST=0.02**) and departments (FST=0.039**).According to genetic distance, the creole Colombian sheep differs with outsider sheep. Conclusions. The results recommend protecting the Creole sheep production because it has been threatened by constant cross with foreign breeds, which would lead to the loss of genetic identity and adapting traits of creole sheep.themselves.

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哥伦比亚克里奥尔羊的遗传多样性

Ojective。哥伦比亚克里奥尔羊的遗传特征及其与欧洲起源品种的关系。材料和方法。在8个省(科尔多瓦、马格达莱纳、塞萨尔、Atlantico、cauka山谷、Narino、Boyaca、Tolima)的40个农场采集了以下种群261只羊的血样:Criollos de Lana (CL)、Mora Colombiana (MC)、Criollo de Pelo (CP)、Criollos mestizos (Mes)、Hampshire (Hamp)、Corriedale (Corr)、Katahdin (Kath)、Pelibuey (Pel)，以及30只西班牙美利奴、美利奴Precoz (MP)、Merinofleischschaf (MF)、Segureno (Seg)和Uda (UD) de Nigeria。本研究共纳入15个微卫星标记。结果。克里奥尔羊平均等位基因数分别为6.20±1.48 (CL)、7.27±1.39 (CP)和3.60±1.55 (MC);遗传多样性高(杂合度高75%)，FIS值为负值表明遗传渗入程度高;此外，FST还揭示了克里奥尔羊(FST=0.02**)和科(FST=0.039**)的遗传结构。根据遗传距离，克里奥尔哥伦比亚羊与外来羊不同。结论。研究结果建议保护克里奥尔羊的生产，因为它一直受到与外国品种杂交的威胁，这将导致克里奥尔羊自身遗传特性和适应性特征的丧失。

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