For TAI, cows were bred 18 hours after the second GnRH
injection with X-sorted sperm or nonsorted semen. Cows
selected for TET received an embryo 1 week later. Embryos
were transferred 7.5 to 8.0 days after oocyte fertilization for
recipients with a CL detected by ultrasonic examination.
Cows were given a caudal epidural (5 mL of 2% [wt/vol]