When enslaved males turned 15 years old–and younger in some cases–they had their first inspection. Boys who were under-developed, had their testicles castrated and sent to the market or used on the farm. Each enslaved male was expected to get 12 females pregnant a year. The men were used for breeding for five years. One enslaved man name Burt produced more than 200 offspring, according to the Slave Narratives.