This work aimedto evaluate body measures of colts and fillies of Mangalarga Marchador breedwith principal components analysis. Measures were performed at birth week, in55 colts and 41 fillies; at six months of age, in 35 colts and 37 fillies; andat twelve months of age, in 19 colts and 31 fillies. There were made 25 linearmeasures, including height, length, width and girth, and 11 angular measures.Evaluation of animals with 12 months of age was made with 19 linear and 11 angularmeasures. Analysis of linear measures in newly born reduced the number of measuresfrom 25 to 7 and 9 in fillies and colts, respectively, while for angular measuresthe reduction was from 11 to 6 and 7 in the fillies and colts, respectively.Analysis of linear measures in animals with six months age reduced the numberof measures from 25 to 8 and 9, in the fillies and colts, respectively, whilefor angular measures the reduction was from 11 to 6, in both sexes. At twelvemonths of age the reduction of linear measures was from 19 to 6 and 5, for filliesand colts, respectively, while for angular measures the reduction was from 11to 6 and 5, for fillies and colts, respectively. Principal components analysiswas efficient to reduce the number of linear and angular measures for morfometricevaluation of colts and fillies, with larger reduction among linear measures.The two first principal components, in the different evaluated ages, did notexplained 80% of total variation available, and were not possible to judge attwo-dimensional level
