A characterization of Chinese breeds of swine using cluster analysis

Li, M. D.; Enfield, F. D.

doi:10.1111/j.1439-0388.1989.tb00254.x

Cited by 19 publications

(17 citation statements)

References 1 publication

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“…Consolidation of genetic distance estimates (Fig. 2) is in agreement with the cluster analysis of phenotypic data for western and Chinese pig breeds reported by Li and Enfield (1989). Similar results have been obtained for other domesticated species.…”

Section: Discussionsupporting

confidence: 79%

“…Formulas for estimation and comparisons were reported by Paetkau and Strobeck (1994) b Animals of Meishan breed were not genotyped for microsatellite S0035 were large (1.18 to 1.34), indicating that breed divergence between these populations occurred much earlier than divergence among western breeds. This finding is not surprising based on the phenotypic differences between western breeds and Meishan, distant geographical location, and significant differences in the selection of performance traits (Li and Enfield 1989). All genetic distance estimates based on the haplotyped MS were similar.…”

Section: Genetic Variationsupporting

confidence: 56%

“…Several studies have compared growth and carcass performance between western breeds of swine and the highly prolific Chinese breeds (Li and Enfield 1989;Bidanel et al 1991;Yen et al 1991;White et al 1993). Western breeds are reported to be larger in body mass, to have increased growth rates, and to have slowed maturation in comparison to the Meishan breed.…”

Section: Discussionmentioning

confidence: 99%

“…Linkage maps also enhance the identification of quantitative trait loci (QTL) and the implementation of marker-assisted selection (MAS). A study based on phenotypic data for Chinese and several US pig breeds reported separate phylogenetic tree branches for Yorkshire and Duroc breeds from Landrace and Meishan breeds (Li and Enfield 1989). Initial information on relative heterozygosity between western swine breeds and the Chinese Meishan breed (Fredholm et al 1993;Paszek et al 1997) provides an opportunity to test whether markers linked to an economically important locus affecting meat quality in several breeds of western swine, but absent in Chinese breeds can be used to determine evolutionary relationships.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating Evolutionary Divergence with Microsatellites

et al. 1998

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We report the use of microsatellites (MS) to track the recent evolution of swine. Allelic frequencies for nine MS loci linked on swine chromosome 6 (SSC6) representing four western and one Chinese swine breeds were used to estimate genetic distances and times of breed divergence. A phylogenetic tree was constructed which partitioned into western and Meishan breed branches. Yorkshire and Hampshire breeds exhibited the most recent divergence with a calculated distance of 391 years. The oldest divergence, of 2,227 years, was between Meishan and Hampshire swine. Estimates of breed divergence are consistent with historical records. Additional analysis suggests that polymorphic MS linked on a single chromosome are sufficient to determine evolutionary relationships within a single species.

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Section: Discussionsupporting

confidence: 79%

Section: Genetic Variationsupporting

confidence: 56%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluating Evolutionary Divergence with Microsatellites

et al. 1998

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“…This result is consistent with those of other studies on the evolutionary relationships between Chinese and Western pig breeds (Li & Enfield, 1989;Chang et al, 1999;Giuffra et al, 2000). Within the cluster of Asian pig breeds, Erhualian pigs were located in a separate branch in the tree constructed by the use of mtDNA Dloop sequences, suggesting the Erhualian breed is genetically different from not only European pig breeds, but also other Chinese native breeds.…”

Section: Discussionsupporting

confidence: 83%

Molecular genetic analysis of the Chinese Erhualian pig breed

Yue¹,

Gl²

2004

SA J. An. Sci.

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The Chinese Erhualian is one of the most prolific pig breeds in the world, but it is in danger of being replaced by other exotic pig breeds because of its slow growth rate and high fat content in the body. To obtain some genetic information for conservation, we analysed the Erhualian pigs by using a PCR-RFLP for the calcium-release-channel (CRC) gene, nine polymorphic microsatellites and the complete mtDNA D-loop sequences, and compared these data with those from other pig breeds from Europe and Asian. The PCR-RFLP analysis of the CRC gene showed that the frequency of the C allele associated with stress resistance was 100% in the Erhualian pigs. Neighbour-Joining trees constructed on the basis of mtDNA D-loop sequences and the microsatellite analysis clearly showed that the Erhualian pigs were located in a separate branch. These data suggest that the Erhualian pigs are different from other breeds. Microsatellite analysis showed that the average allele number (5.3/locus) in the Erhualian pig was intermediate as compared with that (4.8-7.0/locus) in the three European pig breeds. The expected heterozygosity was higher in the Erhualian pig (0.78) than that in these European pig breeds (0.59-0.72), whereas the observed heterozygosity was higher in the European breeds (0.51-0.64) than in the Erhualian pig (0.46). In the Erhualian pig, the fixation index (F IS ) was as high as 0.41. These data suggest a high level of inbreeding and/or subpopulation in the Erhualian pigs. For conservation of the germplasm in the Erhualian pigs, it is necessary to take measures to reduce inbreeding and/or subpopulation.

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Microsatellite Heterozygosity: Functional Constraints on the Development and Use of Comprehensive Genomic Maps for Livestock

Beattie

1996

Genomes of Plants and Animals

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A characterization of Chinese breeds of swine using cluster analysis

Cited by 19 publications

References 1 publication

Evaluating Evolutionary Divergence with Microsatellites

Evaluating Evolutionary Divergence with Microsatellites

Molecular genetic analysis of the Chinese Erhualian pig breed

Microsatellite Heterozygosity: Functional Constraints on the Development and Use of Comprehensive Genomic Maps for Livestock

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