Domesticated human slaves

[Coley]

didn't the british try this with african & irish slaves in caribbeans?
I order to end up with slaves better suited to the climate (african slaves being resistant, but expensive and irish slaves being cheap and expendable, but not well suited for the hot climates )
i recall reading something about it a long time ago.

Believe their descendants are known as Redlegs,in Barbados and Montserrat.

 

[Coley]

Don't think breeding humans in ancient times would have worked.But as others have mentioned,an invented religion for slaves,with a karma rebirth as a master for being compliant in this life,combined with a basic slave language with narrow worldview might work.But if you've got personal slaves,then throw that all out,because they've got to communicate with each other.A vast isolated workforce for mining,agriculture,manufacturing,like the gulags of USSR,North Korea and China is about as close as I think you could get.

 

[The Gunslinger]

I honestly think humans are way too phylogenetically homogenous to breed selective traits for slaves. There's just not much sense in doing it for the marginal gains you'd receive. And since slaves were more disposable you just endlessly end up diluting your breeding stock.

You'd have better luck just training them from birth for complacency.