Genetic structure of pig breeds from Korea and China using microsatellite loci analysis1

Kim, T. H.; Kim, K. S.; Choi, Bong Hwan; Yoon, Duhak; Jang, Gul Won; Lee, K. T.; Chung, Hoyoung; Lee, H. Y.; Park, H. S.; Lee, J. W.

doi:10.2527/2005.83102255x

Cited by 93 publications

(85 citation statements)

References 37 publications

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“…This observation was congruent with Fang et al [12] and Kim et al [22] and was in line with the biogeography of the wild boar, that occurs throughout Eurasia but is absent in the desert areas in the Gobi and at high altitudes in the Himalayas [31]. This effectively presented a barrier for dispersion in what is currently the central Asian part of China (i.e.…”

Section: Chinese Breeds: Clusteringsupporting

confidence: 90%

“…A comprehensive, global assessment of pig diversity would give better insight into the genetic relationships and distinctiveness of pigs from different parts of the world, and may aid in preservation of worldwide livestock diversity. Recent papers have reported on relations between pigs using microsatellite markers [12,22,26,28,40,47,50], but mainly between pig breeds from either China or Europe. For instance, Zhang et al [50] concluded that a number of major groups could be discerned, in part congruent with previous classification schemes.…”

Section: Introductionmentioning

confidence: 99%

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Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples: differences in microsatellite variation between two areas of domestication

et al. 2007

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-Microsatellite diversity in European and Chinese pigs was assessed using a pooled sampling method on 52 European and 46 Chinese pig populations. A Neighbor Joining analysis on genetic distances revealed that European breeds were grouped together and showed little evidence for geographic structure, although a southern European and English group could tentatively be assigned. Populations from international breeds formed breed specific clusters. The Chinese breeds formed a second major group, with the Sino-European synthetic Tia Meslan in-between the two large clusters. Within Chinese breeds, in contrast to the European pigs, a large degree of geographic structure was noted, in line with previous classification schemes for Chinese pigs that were based on morphology and geography. The Northern Chinese breeds were most similar to the European breeds. Although some overlap exists, Chinese breeds showed a higher average degree of heterozygosity and genetic distance compared to European ones. Between breed diversity was even more pronounced and was the highest in the Central Chinese pigs, reflecting the geographically central position in China. Comparing correlations between genetic distance and heterozygosity revealed that China and Europe represent different domestication or breed formation processes. A likely cause is a more diverse wild boar population in Asia, but various other possible contributing factors are discussed.pigs / Chinese breeds / European breeds / DNA pools / microsatellite /

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Section: Chinese Breeds: Clusteringsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples: differences in microsatellite variation between two areas of domestication

et al. 2007

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“…Number of alleles and allelic size range were compared to Korean, Chinese and Iberian pig breeds. Number of alleles for marker SO072 (7), SO070 (15), SW936 (10), SW24 (13) were similar to Iberian as well as Korean and Chinese population described by Fabuel et al (2004) and Kim et al (2005). Markedly higher number of alleles for each microsatellite markers described above was observed in Chinese indigenous pig breeds (Yang et al 2003).…”

Section: Resultssupporting

confidence: 66%

“…The observed heterozygosity varied between 0.64 (Landrace) to 0.74 (Slovak White Improved), which represent typical value for European breeds. Observed heterozygosity in Slovak Landrace population is equal to Korean (0.62), Vietnamese (0.60) and German population (Kim et al 2005, Thuy et al 2006. Slovak Yorkshire according to another Yorkshire population presents higher value of observed heterozygosity.…”

Section: Resultsmentioning

confidence: 85%

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Genetic admixture in pig population observed by microsatellite markers

Židek

Jakabová²,

Trandžík

et al. 2011

Arch. Anim. Breed.

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The aim of presented study was estimation of genetic relationship within and between 3 mentioned pig breeds bred in the Slovak Republic. Genetic variability at 10 microsatellite loci (SW24, SO107, SO068, SW936, sw353, so386, so355, sw72, tnfb, and SO070) was analysed in 412 pigs of Landrace, Yorkshire and Slovak White Improved breeds. Variation amount of each population was measured with average number of alleles per locus, heterozygosities, polymorphism information content (PIC) value were calculated. Phylogenetic trees were constructed by UPGMA.The average number of alleles per locus was 11.5, ranging from 7 (SW72) to 16 (SO068). The Slovak White Improved, Landrace and Yorkshire pig breeds showed out high degree of genetic diversity with mean expected heterozygosities of 0.720, 0.697 and 0.705 respectively. Genetic distance ranged from 0.060 between Yorkshire and Slovak White Improved to 0.203 between Landrace and Slovak White Improved breeds.The scatter diagram from principal component displayed genetic differentiation among all three breeds. A Bayesian method was applied for individual assigning testing. On the base of our results the group of Slovak White Improved population was strongly mixed with Yorkshire breed and the group of all Landrace individuals was presented as enclosed population. Keywords

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Origin and Genetic Diversity of Pig Breeds

Amills

Clop

Ramírez

et al. 2010

Encyclopedia of Life Sciences

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Genetic and archaeological findings suggest that pig domestication began about 9000–10 000 YBP at multiple sites across Eurasia, followed by their subsequent spread at a worldwide scale. Development of local types throughout the centuries led to the foundation, mostly during the nineteenth century, of current modern breeds with defined phenotypes and production abilities. Extensive intercrossing markedly increased the gene pool of these founder populations. For instance, it is well known that many European pig breeds carry Far Eastern haplotypes at high frequencies because of an ancient introgression with Chinese swine. Since then, artificial selection, genetic bottlenecks and inbreeding have significantly modified the allelic diversity of pig breeds. In the next future, state‐of‐the‐art scientific advances as well as conservation programmes will be fundamental to preserve the genetic reservoir of pig breeds as well as to exploit it in the context of artificial selection schemes. Key Concepts: Pigs were domesticated at multiple locations across Eurasia. Exploratory and commercial journeys favoured the dissemination of European and Far Eastern pigs into Africa and America. England, United States and China were the main centres of breed development during the eighteenth to nineteenth centuries. Genetic variation of pigs has been shaped by the complex interplay of artificial selection, population admixture, inbreeding and genetic drift. Artificial selection is evolution but an accelerated pace; therefore, by comparing breeds that have undergone distinct selective pressures we can glimpse the molecular basis of adaptation. Approximately 20% of local pig breeds face extinction because of dramatic decreases in their census or extensive intercrossing with foreign populations. New genotyping and sequencing technologies will revolutionise knowledge on patterns of diversity in livestock species, including pigs.

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Genetic structure of pig breeds from Korea and China using microsatellite loci analysis1

Cited by 93 publications

References 37 publications

Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples: differences in microsatellite variation between two areas of domestication

Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples: differences in microsatellite variation between two areas of domestication

Genetic admixture in pig population observed by microsatellite markers

Origin and Genetic Diversity of Pig Breeds

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