E3S Web of Conf.
Volume 222, 2020International Scientific and Practical Conference “Development of the Agro-lndustrial Complex in the Context of Robotization and Digitalization of Production in Russia and Abroad” (DAIC 2020)
|Number of page(s)||8|
|Section||Efficient Production, Storage, Processing and Pre-sale Preparation of Agricultural Products. Creation of Safe and High-quality, Including Functional Food Products Based on Modern Genetic and Breeding Methods in Crop Production and Animal Husbandry|
|Published online||22 December 2020|
Genotyping of selection-significant polymorphisms of cattle of the Western Siberia
1 Novosibirsk State Agrarian University, Novosibirsk, Russia
2 Siberian Federal Research Centre for AgroBiotechnology, RAS, Krasnoobsk, Novosibirsk region, Russia
* Corresponding author: email@example.com
The article presents the results of genotyping of 156 Simmental cows for the genes of kappa casein (CSN3), beta-lactoglobulin (BLG), alpha-lactalbumin (LALBA) and leptin (LEP). Studies have shown that the population for all genes is in a state of equilibrium distribution of genotypes, which indicates the absence of factors that change allele frequencies. For the CSN3 gene, the frequency of genotypes A/A, A/B, and B/B is 0.583, 0.385, and 0.032; alleles A and B - 0.776 and 0.224. For the BLG gene, the frequency of the corresponding genotypes is 0.449, 0.455, and 0.096; alleles A and B - 0.676 and 0.324. The occurrence of the LALBA gene genotypes is as follows: A/A – 0.513, A/B – 0.429, B/B – 0.058; allele A – 0.728, allele B – 0.272. Distribution of genotypic classes of the LEP gene: C/C – 0.429, C/T – 0.481, T/T – 0.09; frequency of alleles C and T – 0.67 and 0.33. The observed population structure with a low frequency of B/B genotypes for the CSN3 and BLG genes associated with protein-milkability, but a relatively high level of heterozygosity, demonstrates a stable equilibrium of allele frequencies, which is possible in the case of selection in favor of heterozygotes.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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