The fourth NAV routine evaluation this year took place as scheduled. NAV Bull Search has been updated with the new EBV’s and GEBV’s.
In this evaluation single step method was introduced for fertility and it replaces the so called two step method. Single step uses all information from genotyped and non-genotyped animals simultaneously.
In the calculation of conformation indices, the breed averages have been updated for all breeds, and that especially affects the frame index for all breeds. For Holstein the weights and optimum in the udder index have been changed.
Read more about the changes: