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Oyster shells VS. clam shells

post #1 of 5
Thread Starter 

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.

post #2 of 5

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.

post #3 of 5

The oyster shells sold here, are actually crushed limestone.

post #4 of 5
Quote:
Originally Posted by 2manyRoosters 

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.


Mmmm... fine New England clams.  droolin


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.

Wheaten / Blue Wheaten Ameraucanas, and 2 cats

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Wheaten / Blue Wheaten Ameraucanas, and 2 cats

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post #5 of 5

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.

Keeper of 6 Rhode Island Reds (born June/2010).
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Keeper of 6 Rhode Island Reds (born June/2010).
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