FIG. 7.

Mean (±SEM) changes in CL blood flow (percent of CL area) as determined by color Doppler ultrasonography during luteolysis in heifers in which all follicles ≥4 mm were ablated every day from Day 9 to Day 17. Heifers were assigned to receive two i.m. injections of 1.0 mg of estradiol benzoate diluted in sesame oil on Day 13 and Day 15 (FAE2) or the equivalent volume of vehicle (sesame oil; FAV). Main effects of group (G), day (D), and their interaction (GD) are shown. An asterisk (*) indicates differences among means within a group.