Males are seasonal breeders, corresponding with that of the females. Spermatogenesis continues throughout the year but at a higher rate during the breeding season. Females do not have regular estrous cycles but are induced ovulators. Ovulation can occur within 48 hours for Old World camelids and within 24 36 hours for South American camelids following mating. They demonstrate polyestrus seasonally, which occurs with the decrease of day length from October to May for Old World camelids and during the rainy months from December to April for South American camelids. Further, Old World camelids calve a single baby every 2 years and wean newborns at 12 18 months, whereas South American camelids calve every year and wean newborns at 6 12 months (Table 1).
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