Genetic characterization of Colombian Brahman cattle using microsatellites markers

Abstract

Genetic structure and diversity of 3789 animals of the Brahman breed from 23 Colombian regions were assessed. Considering the Brahman Zebu cattle as a single population, the multilocus test based on the HW equilibrium, shows significant differences (P < 0.001). Genetic characterization made on the cattle pop ulation allowed to examine the genetic variability, calculating a Ho = 0.6621. Brahman population in Colom bia was a small subdivision wthin populations (Fit = 0.045), a geographic subdivision almost nonexistent or low differentiation (Fst = 0.003) and the Fis calculated (0.042) indicates no detriment to the variability in the population, despite the narrow mating takes place or there is a force that causes the variability is sustained without inbreeding actually affect the cattle population. The outcomes of multivariate analyses, Bayesian inferences and interindividual genetic distances suggested that there is no genetic substructure in the popu lation, because of the high rate of animal migration among regions.