Ehhh. Don't enjoy that...Medical experiments, animal fodder, catch of the day.. the possibilities are endless.
I think with nearly 100% you're right. Maybe they ate them or whatever. Slavery would be the best case..of the choice they had. If I were in such a situation, I'd maybe prefer killing myself...if I had the possibility. Where I have my doubts...Whatever happened, methinks what they did to Blair was nothing compared to what others probably went through after being captured.