Genetic diversity in South African Nguni cattle ecotypes based on microsatellite markers

Show simple item record Sanarana, Yandisiwe Patience Visser, Carina Bosman, Lydia Nephawe, Khathutshelo Maiwashe, A. Van Marle-Koster, Este 2016-02-10T07:37:58Z 2016-02
dc.description.abstract The Nguni cattle breed is a landrace breed adapted to different ecological regions of South Africa. A number of ecotypes are recognised based on phenotype within the breed, but it is not known if they are genetically distinct. In this study, molecular characterisation was performed on Makhathini (MAK), Pedi (PED), Shangaan (SHA) and Venda (VEN) Nguni cattle ecotypes. Two Nguni cattle populations, not kept as separate ecotypes, from the University of Fort Hare (UFH) and Agricultural Research Council Loskop South farm (LOS) were also included. Genotypic data was generated for 189 unrelated Nguni cattle selected based on pedigree records using 22 microsatellite markers. The expected heterozygosity values varied from 69 % (UFH) to 72 % (PED) with a mean number of alleles ranging from 6.0 to 6.9. The F ST estimate demonstrated that 4.8 % of the total genetic variation was due to the genetic differentiation between the populations and 92.2 % accounted for differences within the populations. The genetic distances and structure analysis revealed the closest relationship between MAK, PEDI and SHA ecotypes, followed by SHA and VEN. The UFH population clustered with the MAK ecotype, indicating that they are more genetically similar, while the LOS cattle grouped as a distinct cluster. Results suggest that the genetic differentiation between the PED and SHA ecotypes is low and can be regarded as one ecotype based on limited genetic differences. The results of this study can be applied as a point of reference for further genetic studies towards conservation of Nguni cattle ecotypes. en_ZA
dc.description.embargo 2017-02-20
dc.description.librarian hb2015 en_ZA
dc.description.sponsorship Limpopo Department of Agriculture and Agricultural Research Council - Animal Production Institute (ARC-API). en_ZA
dc.description.uri en_ZA
dc.identifier.citation Sanarana, YP, Visser, C, Bosman, L, Nephawe, K, Maiwashe, A & Van Marle-Koster, E 2016, 'Genetic diversity in South African Nguni cattle ecotypes based on microsatellite markers',Tropical Animal Health and Production, vol. 48, no. 2, pp. 379-385. en_ZA
dc.identifier.issn 0049-4747 (print)
dc.identifier.issn 1573-7438 (online)
dc.identifier.other 10.1007/s11250-015-0962-9
dc.language.iso en en_ZA
dc.publisher Springer en_ZA
dc.rights © Springer Science+Business Media Dordrecht 2015. The original publication is available at : http://link.springer.comjournal/11250. en_ZA
dc.subject Conservation en_ZA
dc.subject Ecotypes en_ZA
dc.subject Microsatellites en_ZA
dc.subject Population structure en_ZA
dc.title Genetic diversity in South African Nguni cattle ecotypes based on microsatellite markers en_ZA
dc.type Postprint Article en_ZA

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