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Information × Registration Number 0221U104496, 0116U005008 , R & D reports Title To research the polymorphism of a series of loci of quantitative traits and to determine their association with the display of productivity qualities of pigs of different genotypes for marker selection popup.stage_title Head Balatskyi Viktor M, Registration Date 28-03-2021 Organization Institute of Pig Breeding and Agro-Industrial Production of the National Academy of Agrarian Sciences of Ukraine popup.description2  The technologies of DNA typing of pigs by genes: family of cathepsins CTSB g. 72 A> C, CTSL g.143C> T, CTSS g.171G> A, CTSK g.15G> A, CTSF g.22 G> C, CTSD g.70 G> A, LEP (g.3469T> C, g.2845A> T, g.3996C> T) and LEP (g.3469T> C, g.2845A> T, g.3996C> T. The distribution of alleles and genotypes of these genes is specific to the populations of pigs of the Great White breeds of different types of domestic and English selection, Great Black, Pietren and Meishan. Associations of independent loci characteristic of breeds of different direction of productivity are determined. The distribution of alleles and genotypes and the found interlocus associations can be the basis for DNA certification of breeds. The established associations of cathepsin L and cathepsin K genes are associated with separate indicators of meat quality of pigs of large white breed UVB1. Thus, CTSLg.143T> C affects the protein content and pH of pig meat, there is a tendency to link this polymorphism with the amount of ash after burning the meat sample. The CTSK g.15G> A single nucleotide polymorphism is associated with tenderness of meat. Regarding the SNP g.72A> C of the cathepsin B gene, there is a tendency for it to be related to the tenderness and pH of the meat. Therefore, these SNPs can be tested in MAS as genetic markers of certain parameters of meat quality in UVB-1 pigs. However, these SNPs have not been linked to a number of other important meat quality indicators. Analysis of the associations of cathepsin D and F genes with meat quality and meat qualities of UVB pigs showed their unequal "contribution" to the manifestation of the studied signs of productivity. The cathepsin D gene (SNP g.70G> A) affected the content of intramuscular fat, moisture in meat and its moisture-retaining ability, as well as had an additive effect on an important breeding trait - the thickness of pig fat. Product Description popup.authors popup.nrat_date 2021-03-28 Close