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No evidence for a recent genetic bottleneck in the endangered Sheko cattle breed (African Bos taurus) revealed by microsatellite analysis

Hailu Dadi¹, Joram Mwacharo², Markos Tibbo³, Yukimizu Takahashi⁴, Koh Nomura⁴, Hirofumi Hanada⁵ & Takashi Amano⁵

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1. Adami Tulu Agricultural Research Center
2. Kiboko Research Centre, Kenya Agricultural Research Institute
3. International Center for Agricultural Research in the Dry Areas, Diversification and Sustainable Inensification of Production Systems Program
4. Laboratory of Animal Genetics and Breeding, Department of Animal Science, Tokyo University of Agriculture
5. Laboratory of Animal Genetics and Breeding, Department of Animal Science, Tokyo University of Agriculture,

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Date:

Received 30 October 2009 14:01 UTC; Posted 03 November 2009

Subjects:

Genetics & Genomics

Tags:

• Sheko cattle genetic bottlenecks microsatellite analysis Ethiopia

Abstract:

Sheko is African taurine cattle, valued for its milk yield, adaptation to humid tsetse infested environment and trypanotolerance. We used 30 microsatellite markers in analyzing 30 DNA samples. We found high genetic diversity and no genetic bottlenecks in endangered Sheko cattle. Sheko cattle have not undergone recent genetic bottlenecks, in spite of drastic reduction in its overall demographic population size. The results were supported by three statistical methods:
(i) detection of heterozygosity excess
(ii) a mode-shift indicator of allele distribution pattern
(iii) the ratio of the number of alleles to the range of allele size, M-ratio test. This breed reflects historical and cultural identity of local communities and represents a unique component of the global domestic animal biodiversity that deserve priority for conservation.

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This document is licensed to the public under the Creative Commons Attribution 3.0 License

How to cite this document:

Dadi, Hailu, Mwacharo, Joram, Tibbo, Markos, Takahashi, Yukimizu, Nomura, Koh, Hanada, Hirofumi , and Amano, Takashi. No evidence for a recent genetic bottleneck in the endangered Sheko cattle breed (African Bos taurus) revealed by microsatellite analysis. Available from Nature Precedings <http://hdl.handle.net/10101/npre.2009.3925.1> (2009)

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