Analysis of genetic diversity and conservation priorities for six north Ethiopian cattle breeds.
Analysis of genetic diversity and conservation priorities for six north Ethiopian cattle breeds.
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DOI：
10.1111/j.1439-0388.2007.00660.x
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发表时间：
2007-08
期刊：
影响因子：
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通讯作者：
M. Zerabruk;J. Bennewitz;J. Bennewitz;J. Kantanen;I. Olsaker;O. Vangen
中科院分区：
文献类型：
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作者：
M. Zerabruk;J. Bennewitz;J. Bennewitz;J. Kantanen;I. Olsaker;O. Vangen
采用核心集方法，基于 20 个微卫星标记，对埃塞俄比亚北部 6 个本土牛品种的遗传多样性和保护潜力进行了分析。预期的未来多样性（假设指定的灭绝概率在未来 20-50 年有效）为 0.988+/-0.011 和 0.980+/-0.010，最大方差总数 (MVT) 和最大方差后代 (MVO) 核心集的预期多样性损失分别为当前水平的 0.02% 和 0.74%。尽管所有品种都对当前的多样性水平做出了贡献，但阿法尔和阿伯格品种仅分别对 MVT 和 MVO 核心集多样性贡献了 51% 和 62%，而 Raya 品种对 MVT 和 MVO 核心集多样性仅分别贡献了 6% 和 1.5%。此外，考虑到品种的起源和迁徙历史，利用 MVT 核心集方法获得的保护潜力优先考虑六个北埃塞俄比亚牛品种似乎是合理的。我们的结果表明，通过根据 MVT 核心集中每个品种的保护潜力设计保护策略，优先考虑将具有高保护潜力的品种的灭绝概率降至零，可以充分维持这些品种当前的总遗传多样性。
Genetic diversity and conservation potential of six indigenous cattle breeds of north Ethiopia was analysed based on 20 microsatellite markers using core set methods. Expected future diversity (assuming assigned extinction probabilities are valid for the next 20-50 years) were 0.988+/-0.011 and 0.980+/-0.010 with expected loss of diversity estimated at 0.02% and 0.74% of current level for the Maximum Variance Total (MVT) and Maximum Variance Offspring (MVO) core sets, respectively. Even though all breeds have contributed to current diversity levels, the Afar and Abergelle breeds only contributed 51% and 62% to the MVT and MVO core sets, respectively, while the Raya breed contributed only 6% and 1.5% to the MVT and MVO core set diversities, respectively. Moreover, prioritizing the six north Ethiopian cattle breeds using the conservation potential obtained from the MVT core set method seems reasonable considering the origin and migration histories of the breeds. Our results suggest that the total current genetic diversity of these breeds can be sufficiently maintained by designing a conservation strategy based on conservation potential of each breed from the MVT core set so that priority is given to lowering the extinction probabilities of breeds with high conservation potential to zero.