POLYMORPHISM OF DNA MARKERS MEAT AND LARD SHEEP BREED OF KAZAKHSTAN BY GENES OF GROWTH HORMONE (GH2) AND INSULIN-LIKE GROWTH FACTOR 1 (IGF-1)
DOI:
https://doi.org/10.47100/herald.v1i2.42Keywords:
kers associated with the level of productivity has become particularly important. The introduction of these technologies into domestic lamb production is an urgent task, the solution of which is of important social and economic importance. During the study of polymorphic systems of blood proteins, the degree of differentiation of genetic structures of Kazakh fat-tailed and Edilbay breeds by alleles and genotypes of polymorphic proteins was determined, as well as their relationship with productive qualities. Testing revealed that the GH2 gene is polymorphic in the population of Kazakh fat-tailed sheep. The highest incidence is the allele G (0,7169), which was found homozygous in 51,4% of sheep and heterozygous in 40,7% of sheep. The СС genotype was predominant in the IGF1 gene in the population of sheep of Kazakh fat-tailed breed (70,9%). In the IGF1 gene, two genotypes have been identified in the Edilbay breed population: СС and CT, with the СС genotype being predominant in the studied sheep population – 56,7%, Kazakh fat-tailed breed, Edilbay breed, meat productivity, DNA markers, allels, meat and greasy sheep breeding, live weight, fat tail, heredity, precocity.Abstract
In recent years, research aimed at developing methods for selecting DNA - markers associated with the level of productivity has become particularly important. The introduction of these technologies into domestic lamb production is an urgent task, the solution of which is of important social and economic importance. During the study of polymorphic systems of blood proteins, the degree of differentiation of genetic structures of Kazakh fat-tailed and Edilbay breeds by alleles and genotypes of polymorphic proteins was determined, as well as their relationship with productive qualities. Testing revealed that the GH2 gene is polymorphic in the population of Kazakh fat-tailed sheep. The highest incidence is the allele G (0,7169), which was
found homozygous in 51,4% of sheep and heterozygous in 40,7% of sheep. The СС
genotype was predominant in the IGF1 gene in the population of sheep of Kazakh
fat-tailed breed (70,9%). In the IGF1 gene, two genotypes have been identified in the
Edilbay breed population: СС and CT, with the СС genotype being predominant in
the studied sheep population – 56,7%.
