Structure of Subpopulations of Ayrshire, Holstein, and Jersey Cattle in the Southern Regions of Russia by CSN2 (rs43703011), CSN3 (rs43703016), and Microsatellite Loci (BM1818, BM1824, BM2113, ETH10, ETH225, ETH3, INRA023, SPS115, TGLA126, TGLA122, TGLA227, TGLA53)
N. V. Kovalyuk, A. E. Volchenko, E. V. Shiryaeva, L. I. Yakusheva, Yu. Yu. Shakhnazarova
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引用次数: 0
Abstract
During studies using molecular biological methods, 3000 cow blood samples of the Ayrshire, Holstein, and Jersey breeds from the herds of Krasnodar and Stavropol krais were genotyped by the loci BM1818, BM1824, BM2113, ETH10, ETH225, ETH3, INRA023, SPS115, TGLA126, TGLA122, TGLA227, TGLA53, CSN2 (rs43703011), and CSN3 (rs43703016). On average, the frequency of occurrence of homozygous genotypes for 12 microsatellite loci in Jersey cattle was 0.38; in Holstein and Ayrshire cattle, it was 0.30 and 0.27, respectively; the highest allelic diversity was found in Holstein cattle (9.0 ± 1.7 alleles per locus). It should be noted that there are significant differences in the genetic profile of Ayrshire cattle. For Ayrshire animals, the following allelic variants turned out to be typical (but rare in Jersey and Holstein cattle): 270 of the locus BM1818, 137 of the locus BM2113, 213 of the locus ETH10, 119 of the locus ETH3, 142 of the locus ETH225, 87 of the locus TGLA227, 166 of the locus TGLA53. In the studied subpopulation of Jersey cattle, the frequency of occurrence of the A2A2 genotype of the CSN2 locus (rs43703011) (beta casein) was 0.68, and in the Ayrshire and Holstein groups, it was only 0.25 and 0.31, respectively. The BB genotype of the CSN3 locus (rs43703016) (casein kappa) was found in the Jersey group of animals with a frequency of 0.76, and in Ayrshires and Holsteins, it was 0.04 and 0.15, respectively. The genotyped groups of Jersey, Ayrshire, and Holstein animals are significant in volume; we assume that the identified patterns are typical of cattle of these breeds in the south of Russia. We believe that the data obtained can be used in the future in practical work on classifying certain groups of livestock as typical Holstein, Ayrshire, or Jersey and when creating herds that produce milk of a certain type (for example, type A2 milk).
期刊介绍：
Russian Journal of Genetics is a journal intended to make significant contribution to the development of genetics. The journal publishes reviews and experimental papers in the areas of theoretical and applied genetics. It presents fundamental research on genetic processes at molecular, cell, organism, and population levels, including problems of the conservation and rational management of genetic resources and the functional genomics, evolutionary genomics and medical genetics.
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