INTER AND INTRASPECIFIC COMPARATIVE ANALYSIS OF GROWTH HORMONE GENE FOR SOME FARM RUMINANT SPECIES

Abstract

Growth hormone affects a lot of physiological processes and traits, such as metabolism, milk and meat production. Polymorphism at DNA level might affect gene function and consequently the trait. The aim of this study was to identify the variation in the growth hormone gene between and within species (cattle, sheep and goat). The results showed that all variations between species located at intronic region, whereas exon 3 didn’t have any species-specific genetic variations. There is no SNPs identified between the breeds of cattle, whereas the variation within breeds of sheep and goat located at an intronic and exonic region.