Relationship of polymorphism of untranslated region (5-UTR) of the insulin-like growth factor (IGF-1) gene with milk production and growth traits in local black goats

Abstract

The study was conducted on a sample of 34 local goats in a private field of a breeder in Canaan sub-district / Diyala governorate. Laboratory work was conducted in the laboratory of the College of Agriculture - University of Diyala and the Office of Scientific Advancement - Al-Harithiya – Baghdad- Iraq for the period from 13/11/2021 to 1/5/ 2022 with aim of studying the genetic polymprphism of the untranslated region (5-UTR) of the IGF-1 gene and its relationship to milk traits (daily milk production - DMY and total milk production - TMY) and growth traits (birth weight -BWT, weaning weight -WWT and weight gain pre-weaning-WG). The results of the study showed a highly significant (P < 0.01) between the genotypes, as two genotypes of 5-UTR were observed, namely, GG and AG, with frequency distribution ratios of 91% and 9%, respectively, while the frequency of the G allele was more) 94%) compared frequency A allele (6%) in the studied sample.