Automated Male Milking
As noted before some Gynarchic societies have esoteric uses for male ejaculate.
By controlled breeding, diet, exercise, supplements and drugs this slave man is one of many bred for milking. Physical virility is cultivated. Over time, the system of creating slaves who frequently produce a high quantity of sperm achieved perfection.
The automated milking machine drains maximum ejaculate from helpless men. The machine’s milking process is excruciating causing the bull to scream. Noise goes ignored since it does not hinder sperm extraction.
Except when sedated for recuperation, the slave lives attached to the device.
During productive years, he has no other activity. When the slave’s production begins to flag, a younger slave male takes his place on the milking machine.
Discarded bulls have no use. Their final fate is unknown.