Growth hormone (GH) plays an important role in growth and development because it?s direct effects on metabolism in various animal species. In this study, a single nucleotide polymorphism at nucleotide C3199T in intron 4 of the chicken growth hormone was identified and its? relationship with carcass parameters was analyzed in a population of 170 Tau Vang chickens. As a result, statistically significant difference between genotypes and some observed traits, in which abdominal fat weight and abdominal fat weight ratio of chickens with CC genotype performed lowest while gizzard weight and leg quarter weight of them were highest (P?