Insight into the genetic composition of South African Sanga cattle using SNP data from cattle breeds worldwide

Genetics Selection Evolution

Research Article

Mahlako L. Makgahlela¹  Sithembile O. Makina¹  Michiel M. Scholtz²  Azwihangwisi Maiwashe²  Michael D. MacNeil³  Farai C. Muchadeyi⁴  Este van Marle-Köster⁵  Jeremy F. Taylor⁶  Jared E. Decker⁶  Lindsey K. Whitacre⁶ 

[1] Agricultural Research Council-Animal Production Institute, Private Bag X 2, 0062, Irene, South Africa;Agricultural Research Council-Animal Production Institute, Private Bag X 2, 0062, Irene, South Africa;Department of Animal, Wildlife and Grassland Sciences, University of Free State, 9300, Bloemfontein, South Africa;Agricultural Research Council-Animal Production Institute, Private Bag X 2, 0062, Irene, South Africa;Department of Animal, Wildlife and Grassland Sciences, University of Free State, 9300, Bloemfontein, South Africa;Delta G, 59301, Miles City, MT, USA;Agricultural Research Council-Biotechnology Platform, Private Bag X 5, 0110, Onderstepoort, South Africa;Department of Animal and Wildlife Sciences, University of Pretoria, Private Bag X 20, 0028, Hatfield, South Africa;Division of Animal Sciences, University of Missouri, 65211, Columbia, MO, USA;

关键词: Taurine;    Cattle Breed;    Zebu Cattle;    Indicine;    Nguni Cattle;   

DOI  :  10.1186/s12711-016-0266-1

 received in 2016-02-18, accepted in 2016-11-04,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundUnderstanding the history of cattle breeds is important because it provides the basis for developing appropriate selection and breed improvement programs. In this study, patterns of ancestry and admixture in Afrikaner, Nguni, Drakensberger and Bonsmara cattle of South Africa were investigated. We used 50 K single nucleotide polymorphism genotypes that were previously generated for the Afrikaner (n = 36), Nguni (n = 50), Drakensberger (n = 47) and Bonsmara (n = 44) breeds, and for 394 reference animals representing European taurine, African taurine, African zebu and Bos indicus.Results and discussionOur findings support previous conclusions that Sanga cattle breeds are composites between African taurine and Bos indicus. Among these breeds, the Afrikaner breed has significantly diverged from its ancestral forebears, probably due to genetic drift and selection to meet breeding objectives of the breed society that enable registration. The Nguni, Drakensberger and Bonsmara breeds are admixed, perhaps unintentionally in the case of Nguni and Drakensberger, but certainly by design in the case of Bonsmara, which was developed through crossbreeding between the Afrikaner, Hereford and Shorthorn breeds.ConclusionsWe established patterns of admixture and ancestry for South African Sanga cattle breeds, which provide a basis for developing appropriate strategies for their genetic improvement.

【 授权许可】

CC BY   
© The Author(s) 2016

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