Oyster or egg

[redstar14]

Whats better crushed oyster or eggshells for calcium

 

[Percheron chick]

The both contain the same amount of Ca. Eggshells are free so in my book that makes them better.

 

[donrae]

My hens like the egg shells better. As stated, they're free, and free is a great price!

 

[BrendaJ]

I use both. I buy 1 - 2 small bags of OS a yr then use crushed shells the rest of the time. Flock doesn't seem to care.

 

[Sophia5]

I use oysters for calcium and they seem to be fine with it.

 

[Den in Penn]

Consider the calcium circulation. They ingest calcium and use it to make egg shells and bone and a thousand other things a body uses calcium for. They get rid of the calcium with the eggs shells and poop. Now in a perfect closed system there is no loss, but in our universe nothing is perfect. The poop does get recycled, but it can also be carried away by rain or something else can eat the plants it supports. The shells can be given back, but do you sell or give any eggs away? Do they return the shell with the cartons? That calcium is lost to the flock. That is why I mostly give oyster shells.