Abstract:
Results of studies about fattening and meat qualities of Large White young pigs of different genotypes by melanocortin
receptor gene 4 (MC4R) are presented, as well as level of correlations between these traits and some biochemical
indicators of blood serum. It was established that biochemical parameters of blood serum and concentration of total
lipoproteins (mg%) of young pigs correspond to physiological norm of clinically healthy animals, fattening and meat
qualities of animals of different genotypes by melanocortin receptor gene 4 (MC4R) correspond to I and elite class.
Considering intrabreed differentiation by genotype, difference between animals of II (MC4RAG) and I (MC4RAA)
groups in average daily gain in live weight during the control fattening period is 91.9 g (td = 7.00, P<0.001), in length
of chilled carcass is 0.8 cm (td = 0.78, P>0.05), in length of the bacon side of chilled half carcass is 1.2 cm (td = 0.48,
P>0.05), in thickness of fatback at the level of 6-7 thoracic vertebrae is 1.8 mm (td = 2.22, P<0.01) and in age of
reaching live weight of 100 kg is 9.9 days (td = 5.78, P<0.001).
