Originally Posted by
Sumdumho
And what in the original post (since you didn't quote anyone) do you mean to refer to with that? The constitution of the shell? I mean that depends to a degree on diet which would have to do with how the chickens are raised, but it also has to do with breed of chicken and other specific genetic markers of the chicken. Since chickens are not vegetarians, letting them roam outside and pick and worms or mice would allow them to better meet their nutritional needs and thus allow them more protein and calcium when it comes to the production of eggs which may result in a more firm shell. The rest of your post seems venture in an entirely different direction from the quality of the egg though, while your grammar suggests that you intend to connect the two seemingly separate points, so this seems like a bit of a bizarre answer.