Open AccessMONITORING VARIABILITY OF LEPTIN GENE (LEP) ALLELES OF LARGE CATTLE, DEPENDING ON THE DIRECTION OF PRODUCTIVITY
Author(s) -
Н. Ю. Сафина,
N.Yu. Safina
Publication year - 2018
Publication title -
vestnik kazanskogo gosudarstvennogo agrarnogo universiteta
Language(s) - English
Resource type - Journals
ISSN - 2073-0462
DOI - 10.12737/article_5a5f04fdcc20d2.43676819
Subject(s) - productivity , allele , livestock , breed , biology , genotype , dairy cattle , population , selection (genetic algorithm) , milking , allele frequency , microbiology and biotechnology , genetics , zoology , gene , ecology , medicine , environmental health , macroeconomics , economics , artificial intelligence , computer science
It is necessary to use the achievements of molecular genetics, based on the selection of DNA markers, so that to manage the biodiversity of farm animals and the distribution of utility indicators of productivity among cattle populations. The leptin gene, which plays a major role in the metabolism and accumulation of fat, is one of the potential markers of the dairy productivity of cattle. For the study, 301 first-calf cow of Holstein breed was genotyped by “Lenin tribal factory” of Atninskiy district of the Republic of Tatarstan. The variability of the alleles of the leptin gene of cattle was monitored, depending on the direction of productivity of different authors. During the work, the following allelic variants and genotypes were identified: C - 0.58 and T - 0.42; CC - 29.9% (90 heads), TC - 55.5% (167 heads), TT - 14.6% (44 heads). Chi-square test between the observed and expected distribution of genotypes indicates a genetic equilibrium in the studied population. Analysis of ranking of C and T alleles in other authors showed a predominance of LEPC allele, which is favorable for evaluation of milk and meat productivity, which can be the result of targeted selection for the desired economic utility among dairy and meat breeds of cattle. The data obtained in the course of the work suggest the possibility of using genetic marker breeding when drawing up livestock management plans.