South African sheep breeds: Population genetic structure and conservation implications

Soma, P.; Kotzé, Antoinette; Grobler, J. Paul; Wyk, J.B. van

doi:10.1016/j.smallrumres.2011.09.041

Cited by 47 publications

(54 citation statements)

References 22 publications

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“…Although these breeds have different geographic origins, it is important to highlight that DP was created in South Africa due to crossing of DS and PCN breeds (Soma et al, 2012). Therefore the results of the distance matrix and phylogenetic tree are consistent with the geographical location, breeds origin history, and the nurturing practices that genetically improve the individuals (interbreeding).…”

Section: Genetic Diversity Between Breedsmentioning

confidence: 57%

Genetic diversity of Colombian sheep by microsatellite markers

Ocampo

Cardona

Martínez

2016

Chilean J. Agric. Res.

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Section: Genetic Diversity Between Breedsmentioning

confidence: 57%

Genetic diversity of Colombian sheep by microsatellite markers

Ocampo

Cardona

Martínez

2016

Chilean J. Agric. Res.

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“…The low levels of heterozygosity for this breed could be linked to its small effective population size (Ne). Low levels of heterozygosity has also been reported in other indigenous fat rumped sheep (Black headed Persian and Red head Speckled Persian) whereas indigenous fat tailed sheep such as the Pedi, Swazi and Zulu obtained higher levels of genetic diversity [38]. The reason for these higher levels of diversity could be resultant of some level of crossbreeding in these populations.…”

Section: Genetic Diversity Of Indigenous Breedsmentioning

confidence: 75%

“…A number of studies have however mapped the genetic diversity of major livestock species in South Africa using molecular markers, including work by Halimani et al [36] on pigs, Mtileni et al [37] on poultry and Soma et al [38] on sheep. High levels of genetic diversity have been observed for indigenous sheep genetic resources in South Africa [5,39], thus implicating the potential to use these breeds to develop sustainable breeding programs for smallholders using genomic tools.…”

Section: Environmental Sustainability Indicatorsmentioning

confidence: 99%

“…Environmental sustainability problems include water resources and land available for grazing, sheep resources used (animal biodiversity) and plant biodiversity. Smallholder sheep farmers have sheep genetic resources that are highly genetically diverse [38,39]. Despite high levels of genetic diversity, most smallholder sheep production systems are reported to exhibit low production performance levels and this is mainly attributed to various non-genetic reasons.…”

Section: Limitations For Sustainability Of Sheep Farming Systems In Smentioning

confidence: 99%

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Genetic Traits of Relevance to Sustainability of Smallholder Sheep Farming Systems in South Africa

et al. 2017

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Sustainable livestock production is important to ensure continuous availability of resources for future generations. Most smallholder livestock farming systems in developing countries have been perceived to be environmentally, socially and economically unsustainable. Farming with livestock that is robust and adaptable to harsh environments is important in developing countries especially in semi-arid and arid environments. This review discusses the different sheep farming systems employed by smallholder farmers and associated sustainability problems facing them. The review also gives an overview of sustainability indicators and limitations to the sustainability for the different smallholder sheep production systems in South Africa. It is argued that genetic diversity is important for sustainability and needs to be maintained in sheep for sustainable production and reproduction performance. The application of traditional breeding and genomics to ensure sustainable production is explored. Animal breeding approaches, specifically genomics can be applied to improve areas of environmental sustainability of smallholder sheep farming systems but must be targeted to the specific production environments, challenges, and opportunities of smallholder production. The genetic traits important for sustainability, the role of genomics in improving these traits and linking these genetic traits to different farming systems in South Africa are discussed.

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“…These local animals often include indigenous types with low production potential, which are nevertheless well adapted to the different climatic regions of South Africa compared with imported European breeds (Pieters, 2007;Van Marle-Köster et al, 2008). Several studies have been conducted to genetically characterize South African indigenous farm animal breeds and local types (Buduram, 2004;Kotze et al, 2004;Pieters, 2007;Van Marle-Köster et al, 2008;Soma et al, 2012).…”

mentioning

confidence: 99%

The Tankwa Karoo National Park feral goat population: A unique genetic resource

Kotzé¹,

Grobler²,

Marle-Köster³

et al. 2014

SA J. An. Sci.

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The feral goats from Tankwa Karoo National Park in the Northern Cape, South Africa, constitute a potentially unique goat population, which dates back to the early 1900s, but is now at risk of extinction. A total of 66 feral goats from Tankwa Park and former Tankwa goats, now kept on a private farm were genotyped, using eight microsatellite markers. The data were compared with genotypic data of selected commercial breeds (Angora, Boer and Saanen dairy goats). Analysis of population structure using Bayesian and frequency-based methods suggests some uniqueness in the Tankwa populations. This uniqueness may reflect decades of random drift, but could also reflect alleles for adaptation to a harsh environment resulting from natural selection. These results are the first for the Tankwa goat and provide essential information for compiling a strategy for conservation and breeding of this genetic resource.

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South African sheep breeds: Population genetic structure and conservation implications

Cited by 47 publications

References 22 publications

Genetic diversity of Colombian sheep by microsatellite markers

Genetic diversity of Colombian sheep by microsatellite markers

Genetic Traits of Relevance to Sustainability of Smallholder Sheep Farming Systems in South Africa

The Tankwa Karoo National Park feral goat population: A unique genetic resource

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