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Differentiation of wild boar and domestic pig populations based on the frequency of chromosomes carrying endogenous retroviruses

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DOI: 10.4236/ns.2010.26066    5,347 Downloads   10,331 Views   Citations

ABSTRACT

Analysis of the frequencies of chromosomes carrying various classes of porcine endogenous retroviruses (PERVs) and combinations of these classes was performed in the swine species Sus scrofa L. by using maps constructed in two principal component coordinates. Four population clusters can be recognized in the maps. Cluster 1 is formed by wild boars,cluster 2 by domestic meat breeds, cluster 3 by meat-and-lard (universal) breeds, and cluster 4 by miniature pigs. The maps indicate that modern domesticated swine meat breeds are the closest to the wild type. Meat-and-lard domestic swine breeds are more distant from wild boars, and miniature pigs are diverged the most. The maps showed that microevolution processes associated with PERV carriership frequency had two basic dimensions, or vectors: the vector of fat deposition variation and the “minus” selection vector (determination of commercial traits). Thus, PERVs may cause variation in pig physiology.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Nikitin, S. , Yudin, N. , Knyazev, S. , Aitnazarov, R. , Bekenev, V. , Deeva, V. , Goncharenko, G. , Kobzev, V. , Savina, M. and Ermolaev, V. (2010) Differentiation of wild boar and domestic pig populations based on the frequency of chromosomes carrying endogenous retroviruses. Natural Science, 2, 527-534. doi: 10.4236/ns.2010.26066.

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