Genetic diversity within and between European pig breeds using microsatellite markers

SanCristobal, Magali; Chevalet, Claude; Haley, Chris; Joosten, R.; Rattink, A.P.; Harlizius, B.; Groenen, Martien A. M.; Amigues, Yves; Boscher, M. Y.; Russell, George C.; Law, Andy; Davoli, Roberta; Russo, Vincenzo; Desautes, C.; Alderson, L.; Fimland, E.; Bagga, M.; Delgado, Juan Vicente; Vega‐Pla, J. L.; Martínez-Martínez, A.; Ramos, A. M.; Glodek, P.; Meyer, J. N.; Gandini, G.; Matassino, D.; Plastow, Graham; Siggens, K.; Laval, Guillaume; Archibald, Alan; Milan, Denis; Hammond, Keith; Cardellino, R. A.

doi:10.1111/j.1365-2052.2005.01385.x

Cited by 104 publications

(103 citation statements)

References 23 publications

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“…Mean observed heterozygosity (51.20%) and mean expected heterozygosity (52.59%; Table 3) show a high degree of variability. These values are similar to those reported in Denmark and the Netherlands and are outweighed by those reported in China, Brazil and Thailand (Sancristobal et al ., 2006;Fang et al ., 2009;Gama et al, 2013). The mean number of alleles per locus and the allelic richness (Table 3) indicate that this population exhibits some degree of variability.…”

Section: Discussionsupporting

confidence: 67%

Genetic diversity of domestic pigs in Tierralta (Colombia) using microsatellites

Pérez

Qca

Cavadía

et al. 2015

Rev Colomb Cienc Pecu

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SummaryBackground: according to several authors, domestic pigs come from different wild boar populations with varied geographic distribution and are grouped in the genus Sus. Pig domestication occurred gradually. The first animals were small and gathered in small numbers. Several civilizations domesticated this animal as an important source of protein. Tierralta, in Córdoba province, has a large population of domestic pigs, which are a mixture of creole and other breeds. The genetic characterization of populations is used to check the status of genetic diversity, a conclusive element in determining breeding strategies and genetic conservation programs. PCR is the most commonly used technique for studying highly polymorphic markers, such as microsatellites or SSRs. The use of microsatellites is a powerful tool in genetic studies. They have been used for characterization studies of genetic diversity, genetic relationships between populations, paternity testing, inbreeding and genetic bottlenecks. Objective: the purpose of this study was to determine the genetic diversity of domestic pigs in Tierralta (Córdoba, Colombia) using 20 microsatellites. Methods: fifty four samples were studied. Twenty microsatellites recommended by the FAO/ISAG for swine biodiversity studies were used. Results: all the microsatellites were polymorphic, and were detected between 3 (SW911) and 14 (TNFB) alleles (the average number was 6.9 alleles) and a total of 138 alleles were detected. Average expected heterozygosity was 0.5259 and the observed heterozygosity was 0.5120. PIC values ranged from 0.3212 to 0.7980 for loci SW2410 and IFNG, respectively. Conclusions: the results suggest that the analyzed population represents a group with high genetic diversity.

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Section: Discussionsupporting

confidence: 67%

Genetic diversity of domestic pigs in Tierralta (Colombia) using microsatellites

Pérez

Qca

Cavadía

et al. 2015

Rev Colomb Cienc Pecu

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“…Correlation between individual and pooled typing for effective allele number. The comparison could be made only for European pig populations shared between [40] and the present study.…”

Section: Data and Analysismentioning

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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-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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“…Sample size ranged from 15 to 25 individuals (Table 1). The material from these breeds was collected in the framework of PigBioDiv (Ollivier et al 2005;Sancristobal et al 2006) and PigBiodiv II (Blott et al 2003) projects. European breeds were grouped by origin and history into local, international, and commercial breeds.…”

Section: Methodsmentioning

confidence: 99%

Linkage Disequilibrium Decay and Haplotype Block Structure in the Pig

et al. 2008

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Linkage disequilibrium (LD) may reveal much about domestication and breed history. An investigation was conducted, to analyze the extent of LD, haploblock partitioning, and haplotype diversity within haploblocks across several pig breeds from China and Europe and in European wild boar. In total, 371 single-nucleotide-polymorphisms located in three genomic regions were genotyped. The extent of LD differed significantly between European and Chinese breeds, extending up to 2 cM in Europe and up to 0.05 cM in China. In European breeds, LD extended over large haploblocks up to 400 kb, whereas in Chinese breeds the extent of LD was smaller and generally did not exceed 10 kb. The European wild boar showed an intermediate level of LD between Chinese and European breeds. In Europe, the extent of LD also differed according to genomic region. Chinese breeds showed a higher level of haplotype diversity and shared high levels of frequent haplotypes with Large White, Landrace, and Duroc. The extent of LD differs between both centers of pig domestication, being higher in Europe. Two hypotheses can explain these findings. First, the European ancestral stock had a higher level of LD. Second, modern breeding programs increased the extent of LD in Europe and caused differences of LD between genomic regions. Large White, Landrace, and Duroc showed evidence of past introgression from Chinese breeds.

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Genetic diversity within and between European pig breeds using microsatellite markers

Cited by 104 publications

References 23 publications

Genetic diversity of domestic pigs in Tierralta (Colombia) using microsatellites

Genetic diversity of domestic pigs in Tierralta (Colombia) using microsatellites

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

Linkage Disequilibrium Decay and Haplotype Block Structure in the Pig

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