Genetic Diversity of 10 Indigenous Pig Breeds in China by Using Microsatellite Markers

Wang, X.; Cao, Honghe; Shimin, Geng; Li, H. B.

doi:10.5713/ajas.2004.1219

Cited by 21 publications

(19 citation statements)

References 9 publications

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“…Parameters of genetic diversity among European breeds were within previously reported ranges (Table 1) [21][22][23], although among Chinese breeds, the H O value of Meishan pigs was lower than that shown in previous studies [23,24]. N A and N E values in Jinhua pigs were lower than in previous studies [25,26], whereas the corresponding H O value was higher. Agu pigs had lower N E than European breeds and Ryukyu wild boar.…”

Section: Genetic Diversity Within Agu Pigssupporting

confidence: 72%

Evaluation of the genetic structure of indigenous Okinawa Agu pigs using microsatellite markers

Touma¹,

Arakawa

Oikawa

2020

Asian-Australas J Anim Sci

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Objective: Agu pigs are indigenous to the Okinawa prefecture, which is the southernmost region of Japan. Agu pigs were exposed to a genetic bottleneck during the 20th century, due to the introduction of European pig breeds. The objective of this study was to elucidate the genetic structure of Agu pigs and to determine their relationships with those of five European breeds, two Chinese breeds and Ryukyu wild boar using microsatellite markers. Methods: A total of 203 DNA samples from 8 pig breeds were used in this study. Genotyping was performed using 21 microsatellite markers distributed across 17 chromosomes. Results: Numbers of effective alleles in Agu pigs were fewer than in European breeds and Ryukyu wild boar. Among domestic pigs, Agu pigs had the lowest heterozygosity (0.423) and highest inbreeding coefficient (F IS = 0.202), indicating a severe loss of heterozygosity in Agu pigs possibly due to inbreeding. Neighbor-joining tree analysis was performed based on Reynolds' genetic distances, which clustered Agu pigs with Duroc pigs. However, principal component analysis revealed a unique genetic position of the Agu pig, and the second principal component separated Agu pigs from all other breeds. Structure analysis with the optimal assumption of seven groups (K = 7) indicated that Agu pigs form an independent cluster from the other breeds. In addition, high and significant F ST values (0.235 to 0.413) were identified between Agu pigs and the other breeds. Conclusion: This study revealed a substantial loss of genetic diversity among Agu pigs due to inbreeding. Our data also suggest that Agu pigs have a distinctive genetic structure, although gene flows from European breeds were observed.

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Section: Genetic Diversity Within Agu Pigssupporting

confidence: 72%

Evaluation of the genetic structure of indigenous Okinawa Agu pigs using microsatellite markers

Touma¹,

Arakawa

Oikawa

2020

Asian-Australas J Anim Sci

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“…The PIC value can range from 0 to 1, however, range of PIC estimates in this study were ranging from 0.41(Sw2008) to 0.86 (S0218) for Niang Megha whereas from 0.45 (S0026) to 0.88 (S0005) in Tenyi Vo with mean of 0.65 ±0.03 and 0.68± 0.0.03, respectively. Similar results were also reported in other pigs (Laval et al, 2000;Martinez et al, 2000;Behl et al, 2002;Li et al, 2010;Wang et al, 2004). Most of the markers had PIC values higher than 0.5, which is a useful indicator of genetic variability and forms the basis for developing breeding or genetic improvement strategy for a population.…”

Section: Polymorphic Information Content (Pic)supporting

confidence: 83%

“…Similar values were also reported by other studies. (Li et al, 2010;Li et al, 2015;Wang et al, 2004 andWang et al, 2011) Genetic bottleneck analysis: In a recently bottlenecked population, the observed gene diversity is higher than the expected equilibrium gene diversity because the allele numbers is reduced faster than the gene diversity which can be computed from the Na, under the assumption of a constant-size (equilibrium) population (Luikart et al, 1998a). In a population at mutation-drift equilibrium, there is approximately an equal probability that a locus shows gene diversity excess or a gene diversity deficit.…”

Section: F Estimatesmentioning

confidence: 99%

Microsatellite based diversity analysis of native pigs of North-Eastern India

Sahoo

Naskar

Banik

et al. 2015

IJAR

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The native pigs of North Eastern region have unique traits such as early sexual maturity and quality bristles compared with exotic/ crossbreds. An attempt was made to measure the genetic variation available within Niang Megha and Tenyi Vo pigs using 22 FAO-ISAG microsatellite markers. The analysis of microsatellite data revealed average number of observed alleles as 6.95±0.54 (Niang Megha) and 7.18±0.45 (Tenyi Vo) where as the effective average number of alleles were 3.55±0.33 and 3.81±0.41, respectively. The mean observed heterozygosities were found to be 0.61± 0.04 and 0.68± 0.05, whereas expected values were 0.67±0.03 and 0.69±0.03, for Niang Megha and Tenyi Vo pigs, respectively. Abundant genetic variations were displayed within the native pigs with the PIC values ranged between 0.41 (Sw2008) to 0.86. (S0218) for Niang Megha and between 0.45 (S0026) to 0.88 (S0005) in Tenyi Vo pigs. The mean F value was 0.15±0.05 in Niang Megha which is more than that found in Tevyi Vo. There was no genetic bottleneck observed in the studied population. A total of 23 and 22 private alleles observed in Niang Megha and Tenyi Vo pigs.

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“…Wang et al (0.6446), but Diannan small-ear pigs are higher than their reported (0.5950)[25].Interpopulation genetic diversityGenetic diversity across breedsExcept for Mingguang small-ear pigs, the rest of the breeds in this study are clearly classified have a clear classification in "Animal Genetics Resources in China Pigs" [26]. The Mingguang small-ear pigs are mainly bred in Mingguang towns and other areas in Tengchong County, Yunnan province.…”

mentioning

confidence: 74%

Genetic diversity analysis in Chinese miniature pigs using swine leukocyte antigen complex microsatellites

Liu

et al. 2021

Anim Biosci

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Background: The sSwine leukocyte antigen (SLA) gene group, which is, a closely linked and highly polymorphic gene group, has important biomedical significance in the protection and utilization of germplasm resources. However, studiesthe study onof genetic polymorphismpolymorphisms analysesis of SLA microsatellite markers (MS) in Chinese miniature pigs areis limited. Methods: To study the genetic diversity of Chinese miniature pigs, eEighteen pairs of microsatellite primers were used designed to amplify the SLA regions of seven miniature pig breeds and three wild boar breeds (n = 346) from in different regions of China. The indexes of genetic polymorphism, including expected heterozygosity (He), polymorphic information content (PIC), and haplotype, were analyzed. The geneticGenetic differentiation coefficient (Fst) and neighbor-joining (NJ) methodsmethod were used for cluster analysis ofamong the breeds. Results: In miniature pigs, tThe results showed that Thethe microsatellite polymorphism of the SLA I region had the was the highest numbers of polymorphisms,, followed by the SLA II and SLA III regions in the miniature pigs;, and the region near the centromere had the lowest number of polymorphismsshowed the lowest polymorphism. Among the seven miniature pig breeds, Diannan small-ear pigspig had the highest genetic diversity (PIC value = 0.6396), whereasile the genetic diversity of the Hebao pig was the lowest (PIC value = 0.4330). The Fst valuesvalue

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Genetic Diversity of 10 Indigenous Pig Breeds in China by Using Microsatellite Markers

Cited by 21 publications

References 9 publications

Evaluation of the genetic structure of indigenous Okinawa Agu pigs using microsatellite markers

Evaluation of the genetic structure of indigenous Okinawa Agu pigs using microsatellite markers

Microsatellite based diversity analysis of native pigs of North-Eastern India

Genetic diversity analysis in Chinese miniature pigs using swine leukocyte antigen complex microsatellites

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