JusticeItEasy said: Mesu isn't a derrogative female term? like saying bitch, sow and similar derrogative terms aimed to females?
I mean I recall afew animes and other J-Productions that say "MESU!" as a way to describe a female as a Sow or a Bitch.
It would make sense considering the theme you mentioned Platina.
Yes, "mesu" means female (animal), so when used towards a human woman, it's a derogatory term (particularly when you specify an unappealing animal, like "mesubuta.") Since yukkuris aren't human, though, it doesn't come across as an insult here, especially in this context where they're being treated like livestock or merchandise.