Cows with dead or
dying conceptuses (at Days 32 or 35) were considered not
pregnant. Fetal deaths were determined between first
check and approximately Day 60. In addition, calving data
were recorded. Cows that left the herd before the first
pregnancy check were excluded from the experiment.
Cows with pyometritis when checked for pregnancy were
included in the data (N ¼ 5 at Dairy 1).