In a dystopian future, livestock has become scarce. But one mad scientist has come up with a solution; he created a serum that would turn whoever is injected into a combo-farm-animal; it would have the udder of a fully-developed dairy cow, the egg-laying organs of a hen, the wool of the softest sheep, the fatness of a pig, excretes flesh to be cooked, eagerness to obey, and more. Not only would they give society what it needs; he would also have a creature to train to be loyal and perfectly obedient to him, which would be easy with the serum including the ability to completely reprogram their mind exactly to his liking. He would even be able to control where and when the creature went to the bathroom down to the last second, as well as for how long. He could make then hold it for days at a time or piss and poop non-stop for days if he wanted to.
He decides to put out an ad seeking a long-term participant of a scientific study of at least 16 years of age. He also plans to eventually transform some else into the same species but has the ability to impregnate the first subject.
Soon he receives a response from.....