Influence of DGAT1 and GH genes on milk productivity of red belarusian cow group
https://doi.org/10.31043/2410-2733-2020-2-31-36
Abstract
The work presents the results of studies on the influence of diacylglycerol O-acyl transferase 1 (DGAT1) and somatotrophin (GH) genes taking into account their polymorphism on the milk productivity of red Belarusian cows. The object of the research was biological material from cows of red Belarusian breed contained in the USP "Novi Dvor-Agro" of the Svislochsky district of the Grodno region. DNA diagnostics of genotypes by the genes diacylglycerol O-acyl transferase 1 (DGAT1) and somatotrophin (GH) were carried out using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). As a result of the research carried out on the population of cows of the red Belarusian breed, the polyforphism of the gene somatotrophin (GH), represented by two alleles - GHL and GHV, with three genotypes GHLL, GHLV and GHVV identified. Among the test animals, individuals with a GHLL allele variant of 66% were more likely to cows, the GHLV was identified in 32%, and the GHVV was detected in only 2% of cows. By the gene diacylglycerol O-acyl transferase 1 (DGAT 1) polymorphism was identification, all animals had only one genotype, DGAT1KK. Results of studies conducted on the effects of diacylglycerol O-acyl transferase 1 genes (DGAT1) and somatotrophin (GH) on milk productivity indices of cows of the red Belarusian breed group showed that in most cases animals with genotype GHLL outnumbered their peers GHLV and GHLL, in terms of 305 days of lactation per 0.9-10.1%, fat and protein flakiness per 0.2-0.3 p.p., the amount of milk fat and protein in milk per 1.1-9.1%. Evaluation of milk productivity of cows by the gene diacylglycerol O-acyl transferase 1 (DGAT 1) in dynamics shows that with increase of lactation sequence number milk productivity indices increase.
About the Authors
A. Mikhaliuk
UO «Grodno State Agrarian University»
Belarus
PhD (Biol. Sci.)
230008, Grodno, ul. Tereshkova, 28
L. Tanana
UO «Grodno State Agrarian University»
Belarus
Dr. Habil. (Agr. Sci.), Professor
230008, Grodno, ul. Tereshkova, 28
O. Epishko
UO «Grodno State Agrarian University»
Belarus
PhD (Agr. Sci.)230008, Grodno, ul. Tereshkova, 28
T. Kuzmina
Russian Research Institute of Farm Animal Genetics and Breeding — Branch of the L. K. Ernst Federal Science Center for Animal Husbandry
Russian Federation
Dr. Habil. (Biol. Sci.), Professor
196601, St. Petersburg, Pushkin, Tyarlevo, Moscovskoe sh. 55a
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For citations:
Mikhaliuk A.,
Tanana L.,
Epishko O.,
Kuzmina T.
Influence of DGAT1 and GH genes on milk productivity of red belarusian cow group. Genetics and breeding of animals. 2020;(2):31-36.
(In Russ.)
https://doi.org/10.31043/2410-2733-2020-2-31-36
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