Heikes, K.A.2012-10-042012-10-042012-10-04http://hdl.handle.net/2097/14779For maximal genetic progress in a dairy, proven AI sires should be selected to use on replacement heifers. To minimize problems at calving, these sires should be selected from bulls that are breed average or better for calving ease.DairyArtificial Insemination (AI)Calving-easeReplacement heifersConference paper