Parámetros genéticos y tendencias para características de crecimiento en el ganado criollo sanmartinero en los Llanos Orientales de Colombia

摘要: The aim of this work was to estimate the genetic parameters for growth traits and tendency their genetic values in a population Bovine Creole cattle Sanmartinero, located Meta, Colombia. Was used an animal model with direct maternal effects as well as permanent environmental were analyzed birth weight, weaning (adjusted at 240 d), weight at 16 months, daily gain, and daily gain months. Were analyzed total 2812 productive records from animals were found direct heritability moderate values, ranging between from 0.16 0.3 GP16m GP respectively. always higher than maternal heritability environmental effects ranged 0.024 ± 0.033 PN until 0.067 ± 0.041 P16m, but repeatability higher for PD (0.41) GPD (0.37) traits. With reference to the average yearly genetic direct effects, displayed positive increase tendency however high variation years were found, conversely values than generally near zero, their tendency also increase. Is noteworthy in spite be conservation herd, do not has been used selection programs those traits, a genetic that suggest change.