The purpose of the study was to evaluate the stability of results from genetic evaluations for growth traits in Mexican populations of Tropicarne and Braunvieh cattle. The analyzed information came from the genetic evaluations for Tropicarne cattle in 2002 and 2003, and Braunvieh in 2003 and 2004. Stability of genetic evaluations considered animals present in both evaluations, using the criteria: changes in expected progeny differences (EPD) and accuracies of previous and recent evaluations, correlation between subsequent predicted EPD, percentage of coincidence of animals within the selected group, regression of recent on previous EPD, regression of differences in genetic trends of genetic evaluations on year of birth, and frequency of animals from previous evaluation within range (68 %) of expected EPD in recent evaluation. Changes in the rank of animals in consecutive evaluations were detected, and lack of stability of evaluations for some traits; however, essentially all the animals had changes in EPD as expected, for all traits and the two breeds studied (0.9613 to 0.9997). Considering the increase of information and the use of different models and genetic parameters, changes were as expected and reasonable. It is recommended to verify stability of future genetic evaluations routinely.
