The present work was conducted on 10 females Zariabi goats to determine both the pattern of estrous behavior and vaginal traits as well as the plasma LH concentration was measured. The present results revealed that, during the postpartum period the LH was low and its level doesn’t exceed 3.93±0.1 1 ng/ml. The LH pulse frequency increased from 1.7 1±0.13 ng/ml to 3.93±0.14 ng/ml with no change in the pulse and frequency. Mean LH value rose from its basal level (1.71±0.13 ng/ml) to 110.7±1.70 ng/ml, 14 hours after the onset of estrus, which was 34.41 k3.91 hours in length and occurred 29.20 ±1.70 days. The conception rate was 60%. Does sought out the buck and displayed tail wagging, bleating and restlessness at the onset of estrus (time 0). Tail wagging but not bleating or restlessness, also increased with the doe actively sought out the buck. Vulva1 redness, swelling and onset of a clear thin vaginal discharge were observed maximally on day 0. It was concluded that onset of frequency tail wagging was the most useful trait for detecting onset of oestrus together with the increased amount of LH.