The effect of active immunization against androstenedione on reproductive performance was investigated in a flock of 151 Angora ewes. Although differences occurred between groups in some of the reproductive parameters recorded, the eventual number of kids produced was virtually the same for treated and untreated ewes. These results suggest that the concept of androstenedione immunization to increase ovulation rate in sheep is less effective in the goat when the same treatment procedure is followed.