Fig. 17-3. Effect of E+ fescue and domperidone (1.1, 1.65, or 2.2 mg/kg, PO, SID) treatment on serum prolactin levels in gravid mares. First detectable differences (P < 0.05) from pretreatment levels are indicated by stars. Unless otherwise indicated, data points represent four mares per treatment. Mares that were not showing signs of impending parturition 7 d after the calculated date of parturition, as determined by veterinary examination, were relocated to an E- pasture (from Redmond, 1994).