Oyster shells VS. clam shells

2manyRoosters

In the Brooder
11 Years
Feb 20, 2008
10
0
22
Gloucester, MA
I see lots of crushed Oyster shells for sale as a calcium supplement, but never see any crushed clam shells. Is there any difference? I thought they both had the same calcium content. Just wondering because I've got PLENTY of clamshells.
 
I'm interested in the answer too because I can get plenty of freshwater mussel shells where I live.

I would think oyster / clam / mussel should all be the same in terms of calcium content, but I would like to hear from someone who is an expert.
 
Quote:
Mmmm... fine New England clams.
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Another easy source of calcium is to crush up their eggshells and feed it back to them. Just make sure the shells don't look like eggs anymore.
 
I would think hardness would be the main difference between clams an oysters. I don't see any reason you couldn't use clam shells. Mussels might be too sharp when crushed.
 

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