Genetic and morphological characterisation of the Ankole Longhorn cattle in the African Great Lakes region

文献类型： 外文期刊

第一作者： Ndumu, Deo B.

作者： Ndumu, Deo B.;Baumung, Roswitha;Wurzinger, Maria;Soelkner, Johann;Ndumu, Deo B.;Ndumu, Deo B.;Hanotte, Olivier;Okeyo, Mwai A.;Jianlin, Han;Kibogo, Harrison;Jianlin, Han

作者机构：

关键词： Ankole Longhorn cattle;microsatellite;geometric morphometric;genetic distance;spatial distance

期刊名称：GENETICS SELECTION EVOLUTION （ 影响因子：4.297； 五年影响因子：4.925 ）

ISSN： 0999-193X

年卷期： 2008 年 40 卷 5 期

页码：

收录情况： SCI

摘要： The study investigated the population structure, diversity and differentiation of almost all of the ecotypes representing the African Ankole Longhorn cattle breed on the basis of morphometric (shape and size), genotypic and spatial distance data. Twenty-one morphometric measurements were used to describe the morphology of 439 individuals from 11 sub-populations located in five countries around the Great Lakes region of central and eastern Africa. Additionally, 472 individuals were genotyped using 15 DNA microsatellites. Femoral length, horn length, horn circumference, rump height, body length and fore-limb circumference showed the largest differences between regions. An overall F(ST) index indicated that 2.7% of the total genetic variation was present among sub-populations. The least differentiation was observed between the two sub-populations of Mbarara south and Luwero in Uganda, while the highest level of differentiation was observed between the Mugamba in Burundi and Malagarasi in Tanzania. An estimated membership of four for the inferred clusters from a model-based Bayesian approach was obtained. Both analyses on distance-based and model-based methods consistently isolated the Mugamba sub-population in Burundi from the others.

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