The aim of project is development of genetic evaluation and optimization of selection strategies in the breeding of selected breeds of horses in the Czech Republic. One of the parts of project will be the proposal of method of collecting of data and creation of databases in electronic form, as well as modification of performance testing to obtain data from the largest part of the population within each breed. Further genetic parameters will be estimated and breeding values for important traits will be predicted. Certified methodology for prediction of breeding values of important traits will be written. An important part of the project will be analysis of populations of horse genetic resources (calculation of coefficients of inbreeding and effective population size) and proposal of selection strategies in these populations.