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dc.contributor.authorBerthouly-Salazar, C.
dc.contributor.authorThevenon, S.
dc.contributor.authorThu Nhu, V.
dc.contributor.authorBinh Trong, N.
dc.contributor.authorLan Doan, P.
dc.contributor.authorCuong Vu, C.
dc.contributor.authorMaillard, J.-C.
dc.date.accessioned2013-02-19T10:08:00Z
dc.date.available2013-02-19T10:08:00Z
dc.date.issued2012
dc.identifier.citationBerthouly-Salazar, C., Thevenon, S., Thu Nhu, V., Binh Trong, N., Lan Doan, P., Cuong Vu, C. and Maillard, J.-C. (2012). Uncontrolled admixture and loss of genetic diversity in a local Vietnamese pig breed. Ecology and Evolution 2, 962-975.en
dc.identifier.urihttp://hdl.handle.net/123456789/1206
dc.description.abstractThe expansion of intensive livestock production systems in developing countries has increased the introduction of highly productive exotic breeds facilitating indiscriminate crossbreeding with local breeds. In this study, we set out to investigate the genetic status of the Vietnamese Black H’mong pig breed by evaluating (1) genetic diversity and (2) introgression from exotic breeds. Two exotic breeds, namely Landrace and Yorkshire used for crossbreeding, and the H’mong pig population from Ha Giang (HG) province were investigated using microsatellite markers. Within the province, three phenotypes were observed: a White, a Spotted and a Black phenotype. Genetic differentiation between phenotypes was low (0.5–6.1%). The White phenotypes showed intermediate admixture values between exotic breeds and the Black HG population (0.53), indicating a crossbreed status. Management practices were used to predict the rate of private diversity loss due to exotic gene introgressions. After 60 generations, 100% of Black private alleles will be lost. This loss is accelerated if the admixture rate is increased but can be slowed down if the mortality rate (e.g., recruitment rate) is decreased. Our study showed that a large number of markers are needed for accurately identifying hybrid classes for closely related populations. While our estimate of admixture still seems underestimated, genetic erosion can occur very fast even through indiscriminate crossbreeding.en
dc.format.extent824871 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherBlackwell Publishingen
dc.subjectAdmixtureen
dc.subjectcrossbreeden
dc.subjectexoticen
dc.subjecthybridsen
dc.subjectpigen
dc.subjectvietnamen
dc.titleUncontrolled admixture and loss of genetic diversity in a local Vietnamese pig breeden
dc.typeJournalArticlesen
dc.cibjournalEcology and Evolutionen
dc.cibprojectNAen


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