Genetic trends measured as mean yearly breeding values for FCR, RFI1, and RFI2 from 2008 to 2011 are shown in Fig. 1, 2, and 3, respectively. The additive genetic level of feed efficiency (FCR, RFI1, and RFI2) increased over the 4 yr in all breeds. The decrease in additive genetic level of RFI was slightly greater for RFI2 compared with RFI1 in DD and YY. The existing selection program also reduces FCR in all breeds but most effectively in DD due to greater selection pressure being placed on FCR in this breed.