Cows were assigned to l of 3 treatments : l FTAL (concurrent with GnRH ,66 h after CIDR removal with conventional semen regardless of estrous expression.2 FTAL with sex-sorted semen regardless of estrous expression .or 3) FTAL with sex-sorted semen for cows having expressed estrus and delayed AL 20 h after final GnRh for cows failing to express estrus