Genetic polymorphism of the RORC, BGH, BGHR, LEP, LEPR genes in Russian hornless cattle breed
2017
Gorlov, I., Volga Region Research Inst. of Manufacture and Processing of Meat and Milk Production, Volgograd (Russian Federation);Volgograd State Technical Univ. (Russian Federation) | Sulimova, G. 3, Russian Academy of Sciences, Moscow (Russian Federation). Vavilov Inst. of General Genetics | Perchun, A. 3, Russian Academy of Sciences, Moscow (Russian Federation). Vavilov Inst. of General Genetics | Slozhenkina, M., Volga Region Research Inst. of Manufacture and Processing of Meat and Milk Production, Volgograd (Russian Federation);Volgograd State Technical Univ. (Russian Federation)
The purpose of this work is to describe the new beef breed Russian Hornless in terms of the genes associated with the formation of economically valuable traits (RORC, bGH, bGHR, LEP, LEPR) and to evaluate its genetic potential in comparison with the parent Aberdeen-Angus breed. The significant differences were found for the LEPR gene: the C allele, the C/C (td = 3.981, p 0.001) and C/T (25 % and 1.7 % for Russian Hornless and Aberdeen Angus, respectively) genotypes. Both breeds were registered to have high content of the CC genotype (Leu/Leu) of the bGH gene (68.3 % and 66.1 %). In the populations of the Russian Hornless and Aberdeen Angus breeds under study, there were revealed 29 and 25 coupled genotypes of 91 ones. There were 6 complex genotypes with a frequency of more than 5 %; the RORC/bGH/bGHR/LEP/LEPR genotypes: AA/CC/AA/AA/CC (13.3 %), AA/CC/AG/AA/CC (11.7 %), and AG/CC/AA/AA/CC (10 %) had the highest frequency. The first two genotypes were present in both breeds and had the same frequency (11.7-15.2 %), the third genotype (AG/LL/AA/AA/CC) occurred 2 times more often in the Aberdeen -Angus breed than in the Russian Hornless breed (20.3 % and 10 %, respectively). The high resource potential of the new Russian Hornless cattle breed was confirmed at the molecular genetic level. It should be noted that the developed breed can be used as a beef breed, and the dairy breed as well, as evidenced by the high content of genotypes preferred for obtaining high meat and milk performance.
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