Under feral conditions, breeding activity is affected greatly by nutrition and in good seasons it is possible to have two kid crops in one year. The length of estrus cycle averages between 19 and 20 days. The presence of bucks acts as an exteroceptive factor in stimulating the onset of estrus at the beginning of the breeding season. 21 Estrus could be successfully synchronized during the regular breeding season by the use of intravaginal progestagen pessaries, subcutaneous progestagen implants or with prostaglandin. Gestation length is approximately 147 days.
Parturition is usually uneventful with dystocia a rare problem.
150-180 Twins are common but surprisingly, there are few triplets. For the first 3-4 days the kids rarely move from the kidding site but thereafter will rejoin the mob with their dam. Birthweight of kids is approximately 6.5 lbs. Kid losses result from stillbirth, predation and starvation. Starvation is usually the result of faulty udders.