no, thin shells will be the first problem - bone loss will happen if it keeps going.
if they are getting green grass at the moment, thats plenty of calcium for now. its when they dont have access to grass, due to caging conditions, or weather that it starts becoming an issue for *most* of us.
my farm is a bit more commercial than most, i have to add green leafy items to my feed; and supply calcium. its not something that i would recommend to others, natural (as far as feed goes) is *normally* better.
if they are getting green grass at the moment, thats plenty of calcium for now. its when they dont have access to grass, due to caging conditions, or weather that it starts becoming an issue for *most* of us.
my farm is a bit more commercial than most, i have to add green leafy items to my feed; and supply calcium. its not something that i would recommend to others, natural (as far as feed goes) is *normally* better.