Research Article Allelic and genotypic frequencies of the DMRT3 gene in the Brazilian horse breed Mangalarga Marchador and their association with types of gait

batida; 105 marcha picada).Two threshold models were used to determine the proportion of phenotypic variance explained by DMRT3 genotypes.The average coancestry for animals with marcha batida was 0.04 ± 0.00, whereas in marcha picada it was 0.05 ± 0.01 (higher than the population mean of 0.04 ± 0.00).The inbreeding coefficient was 1.71% and 3.48% for marcha batida and marcha picada animals, respectively.Effects of the DMRT3 gene ranged from 9.94 to 10.77% (as a proportion of phenotypic variance) when included as an uncorrelated random effect and as a covariable, respectively.The genotypic frequencies of the DMRT3 and the patterns of kinship and inbreeding could be a result of selection in this breed, resulting in statistical confusion between the DMRT3 effects and population structure.