CHROMOSOME MARKERS SURVEY OF DUROC PIGS

B. Danielak-Czech, U. Kaczor, M. Sharan

The aim of this study was to evaluate the nucleolar organizing regions (NORs) size variants as markers for genetic characteristics of the Duroc breed pigs. Size polymorphism of NORs in 16 Duroc pigs was identified by Ag-I staining method and fluorescent in situ hybridization (FISH). On the basis of microscope and computer image analysis four size variants of rDNA-FISH-signal and Ag-NOR silver deposits were classified. In general, the proportions of rDNA signals and silver deposits in 8 and 10 chromosome pairs were similar. The results obtained suggested that these markers can be used for characteristics of Duroc breed.

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