Reproductive timing in O. leucoryx varies. However, in favorable conditions, a female can produce a calf once a year during any month. Most births among introduced herds in Oman and Jordan occur from October to May. Gestation period in this species is about 240 days. Young are weaned by 4.5 months, and captive females initially give birth at age 2.5-3.5 years. The potential longevity of these animals seems to be about 20 years (Nowak, 1999).

Range number of offspring: 1 (low) .

Average number of offspring: 1.

Range gestation period: 8 (low) months.

Average gestation period: 8 months.

Range weaning age: 4.5 (high) months.

Average weaning age: 4.5 months.

Average number of offspring: 1.

Average age at sexual or reproductive maturity (female)

Sex: female: 794 days.

Parental Investment: post-independence association with parents