Associations Between IGF-II Gene Polymorphism and Milk Yield Characteristics In Brown Swiss Cattle

This study was carried out on 114 Brown Swiss cattle reared in intensive conditions at Ataturk University Food and Livestock Application Research Center the private farm found Erzurum province. Genotypic structures were examined terms of Insulin-like growth factor (IGF)-II gene locus distribution genotypes allele frequencies concerning genes determined. The identified associated with milk yield traits such as actual yield, 305-day, daily yield. determined by using Polymerase Chain Reaction (PCR)- Restriction fragment length polymorphism (RFLP) method from blood samples taken cattle. CC, CT, TT genotype population 41 (34%), 65 (54%), 14 (12%), frequency C T to be 0.61 0.39. general averages true 305-day 4317±272.9 kg, 5277±240.7 kg 18±0.9 respectively, while CT 4168±515.8, 3756±321.7 5382±600.3 respectively. As a result, correctly IGF-II detected PCR-RFLP obtained Genotype for can considered sufficient demonstrate diversity race. According Hardy-Weinberg genetic equilibrium test, observed equilibrium.