I give mine raw shrimp bits. They go crazy for shrimp cooked and raw.My niece gives her hens shrimp shells uncooked which freaks me out! I cook stuff like that if I were to feed my gals it.
Of course then I catch them cracking and eating snails! ??? Who knows if it will be good or bad for them.
I did a fecal sample for worms and it came back clear, so guess they are ok.