Making the Uruk-hai

[Kyani]

Okay, I know that asking this question is going to out me as a total weirdo but I'm just wondering...

Urku-hai are supposedly hybrids between men and orcs. So... did Saruman use human men or women for this lovely job? Seems to me that perhaps male humans might not work so well, so would that mean captive women used as breeders?

And I'm pretty sure that Tolkein talks about orc-imps, so we have little orcs, but I don't remember reading anything about orc WOMEN. Does anyone have any clues to the existance of orc women? Surely if the orcs reproduce in the manner of men, then there must be? But do they fight or stay at home or what? I can hardly see them "keeping house" lol...

I know probably some of this will be speculation, obviously we are not told that Saruman has human females spawning uruk-hai imps, but I've always been a little curious to what's most likely here, and also curious about the nature of orc/uruk-hai communities.

Any thoughts?