This study was aimed to investigate the relationship between GHRH gene and sheep growth traits and to search the potential molecular marker associated with the growth traits of sheep. The polymorphisms of rs400079090 and rs419322328 loci of GHRH gene in Suffolk and Kazak crossbred adult ewes were determined. Furthermore, the association of their polymorphisms with the growth traits of the ewes was assessed. The results showed that 3 genotypes were identified at rs400079090 locus and TT genotype was absent a...