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The aim of this study is to determine the relationship between some growth and development characteristics in Anatolian Black cattle from birth to twelve months of age with the Pit-1, GHR and Myostatin genes. PCR-RFLP method was used to detect the polymorphism. Genotype and allele frequencies were found to be AA/AB/BB: 0.096/0.519/0.385 and A/B: 0.356/0.644; AA/AG/GG: 0.346/0.385/0.269 and A/G: 0.538/0.462 in the Pit-1 and GHR genes respectively. Myostatin gene was found to be also monomorphic in all genotypes. Although the chi-square  χ2  test in the Pit-1 gene showed an agreement to Hardy–Weinberg equilibrium ( p  &gt; 0.05), in the GHR gene did not showed an agreement ( p  &lt; 0.05). The results of the statistical analysis indicated an association between Pit-1 and GHR genes polymorphism and growth traits at different stage ages in Anatolian Black cattle. But Pit-1/ Hinf I gene and GHR/ Alu l polymorphisms were not found statistically significant in the specified periods, at all characters. On the other hand, since the MSTN/ BstF5 I gene was found to be monomorphic, no association analysis was performed between the measured values and this gene. In conclusion, mutation of these genes is difficult to suggest as a potential marker in a herd selection regarding the growth and development characteristics.

Determination of the relationship between Anatolian black cattle growth properties and myostatin, GHR and Pit-1 gene