Beef without borders: genetic parameters for Charolais and Limousine Interbeef genetic evaluation of weaning weights

Following the setting up of the new Interbeef service at the Interbull Centre and the entry of Denmark and Sweden into the project, the complete Interbeef process has been rerun in 2008-2009. This new analysis of weaning weights from Denmark, France, Ireland, United Kingdom and Sweden pointed out large difference in data amount, data structure and low connection level between countries. A multiple country model with direct genetic effects and only permanent environment maternal effect has been chosen and corresponding genetic parameters have been estimated to provide all the tools necessary to run a new joint genetic evaluation.