I did read here recently that it takes four crunched-up eggshells to supply the amount of Ca needed to lay one egg. It was just a casual mention, so I don’t know how accurate it is. At any rate, I do think you’ll need more than eggshells, unless you’re eating a ton of eggs from the store.
Therefore, you’ll also need to supply oyster shell. Mine weren’t going for the big chunk oyster shells, so I’ve ordered oyster shell flakes and will start providing them tomorrow.
Therefore, you’ll also need to supply oyster shell. Mine weren’t going for the big chunk oyster shells, so I’ve ordered oyster shell flakes and will start providing them tomorrow.