The peripheral plasma progesterone profile during the reproductive cycle of the WAD goat was similar to that reported elsewhere (Thornburn and Schneider, 1972). The current observations suggest a similar luteal function to that of cattle (Kindahl et al, 1976) where there was an increase from day 4. The levels from day 6 until 24 h prepartum confirm that progesterone is exclusively derived from the ovaries during caprine pregnancy (Linzell and Heap, 1968). The abrupt progesterone decline 24 h prepartum is also consistent with earlier reports (Heap and Linzell, 1966; Blom and Lyngset, 1970; Challis and Linzell, 1971) and confirm that spontaneous parturition in the goat occurs as a result of luteal regression (Curie, 1974). The low levels of progesterone during the postpartum period show that ovarian cyclicity did not resume during the sampling period. The mean interval from parturition to the first postpartum oestrus was 55.7 ± 4.6 d. The mean level of 0.78 ± 0.39 ng/ml observed at 25 d to 30 d postpartum is an indication of some degree of ovarian activity in some of the does during this period