Talvez "No Celeiro" , uma novidade de Piers Anthony .Você pode ter lido em Again, Visions Dangerous , uma antologia de histórias originais de 1972 editada por Harlan Ellison . A única outra possibilidade que conheço (supondo que você a leia em inglês) é a coleção de Anthony de Anthonology .
Trecho da história:
As his eyes adjusted completely, Hitch felt a paralysis of shock coming over him. These were not bovine or caprine snouts greeting him; these were human heads. The fair features and lank tresses of healthy young women. Each stood in her stall, naked, hands grasping the slats since there was room only for the head to poke through. Blondes, brunettes, redheads; tall, petite, voluptuous—all types were represented. This group, clothed, could have mixed enhancingly into any festive Earth-Prime crowd.
Except for two things. First, their bosoms. The breasts were enormous and pendulous, in some cases hanging down to waist-level, and quite ample in proportion. Hitch was sure no conventional brassiere could confine these melons. They were long beyond cosmetic control. It would require a plastic surgeon with a sadistic nature to make even a start on the job.
Second, the girls' expressions. They were the blank, amiable stares of idiocy.
Milkers . . .
Resumo da trama de Variedade SF :
Imagine a parallel earth ("Counter-Earth #772") where there are no mammals save humans. Add slavery to the picture - some humans are the property of others. Now distort slavery to a point where slaves become truly animal:
1. Newborn babies are immediately separated from their mothers, have the use of thumb of their hands physically curtailed, tongue surgically cut off to ensure they will never speak, deprived of all sensory experience during their development years by being confined to a tank where they cannot sense anything & to a dark cell in older years, consciously malnourished so they will develop as mental retards, ...
2. Females are grown as "cows" in barns, & are used primarily as milk animals. With living conditions similar to those we see in cow sheds here.
3. Most male newborns are killed because they're useless. Only a few potential "studs" are saved for breeding.
The whole setup is to contrast the situation of these "animals" with the treatment cattle receive in our cowsheds.
Story is from the point of view of Hitch, an investigator from "Earth-Prime" (presumably our earth) to a newly discovered parallel one. He's out to discover why this world is overrun with barns, when there are no cattle. He will spend a day as a barn-hand there.