Scanning results from the farm this week show sexed semen can work and achieve conception rates as good as conventional "unsorted" semen. Earlier this year, 98 cows on the Greenfield Farm were selected as suitable cows for a fixed time AI trial comparing sexed semen to ordinary unsexed semen.

Three trial subgroups were created: fixed-timed AI using sexed semen at 9am (early insemination); fixed-timed AI using sexed semen at 3pm (later insemination); and conventional semen.