The development of the gene pool in the microevolution of Sus scrofa and the role of heterozygosity in the breed-forming process

The development of the gene pool in the microevolution of Sus scrofa and the role of... The gene pool formation of the modern domestic breeds of pig Sus scrofa domestica and their genesis based on hybridization of wild ancestral forms of the European and Asian origin were studied using molecular immunogenetic methods. Males of the European and Central Asian S. scrofa subspecies (S. s. scrofa and S. s. nigripes were hybridized with domestic pigs of the Swedish Landrace and Vietnamese Black Masked breeds. In addition, we examined the genotypic structure of 65 wild, aboriginal, and local populations as well as cultured breeds, including the stock breeds with different levels of selection. Frequencies of alleles and suballelles of the chromosome 4 locus controlling antigens of the L blood group system were analyzed. The origin of marker suballeles of the European and Asian origin was estimated in the most widespread world pig breeds. Unexpectedly, a strikingly high frequency of the Asian elements was found in the most productive European and American breeds, as well as in the best breeds of Russia and other CIS countries. Only one form of heterozygosity (bcgi/bdfi) was found in a population of wild European ancestors, whereas domestic pig breeds displayed heterozygosity for far more numerous suballeles of the locus studied. Animals with heterozygosity for alleles of the European and Asian origin showed higher adaptivity and fertility. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

The development of the gene pool in the microevolution of Sus scrofa and the role of heterozygosity in the breed-forming process

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2005 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics; Microbial Genetics and Genomics; Animal Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1007/s11177-005-0109-6
Publisher site
See Article on Publisher Site

Abstract

The gene pool formation of the modern domestic breeds of pig Sus scrofa domestica and their genesis based on hybridization of wild ancestral forms of the European and Asian origin were studied using molecular immunogenetic methods. Males of the European and Central Asian S. scrofa subspecies (S. s. scrofa and S. s. nigripes were hybridized with domestic pigs of the Swedish Landrace and Vietnamese Black Masked breeds. In addition, we examined the genotypic structure of 65 wild, aboriginal, and local populations as well as cultured breeds, including the stock breeds with different levels of selection. Frequencies of alleles and suballelles of the chromosome 4 locus controlling antigens of the L blood group system were analyzed. The origin of marker suballeles of the European and Asian origin was estimated in the most widespread world pig breeds. Unexpectedly, a strikingly high frequency of the Asian elements was found in the most productive European and American breeds, as well as in the best breeds of Russia and other CIS countries. Only one form of heterozygosity (bcgi/bdfi) was found in a population of wild European ancestors, whereas domestic pig breeds displayed heterozygosity for far more numerous suballeles of the locus studied. Animals with heterozygosity for alleles of the European and Asian origin showed higher adaptivity and fertility.

Journal

Russian Journal of GeneticsSpringer Journals

Published: May 10, 2005

References

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