The fawns remain with the mothers, nursing until the age of 15 months. The act of nursing prevents the mother s sexual cycling to resume. It has been shown with animals in captivity that if the young can be removed from the females at 6 months, the females can become sexually receptive after one year instead of 2. The fawns must be raised by humans for approximately 6 months to ensure nourishment equivalent to that provided by the mother. This can be done for either half of the population or the entire population.
Costs are high because of the large amount of human intervention.
It is extremely difficult to separate fawns from mothers and often required sedating the mother. Human intervention to feed the young is also expensive requiring skilled biologists. Increasing the survival of juveniles. Survival of juveniles can be increased slightly based on research on similar species. Lions kills a significant number of juveniles each year.