The Coastal Brand Calcium and Poultry Shells is a blend made of 30% oyster shells, 45% core calcium, and 25% clam shells. Since these are all animal calcium carbonate sources (as opposed to limestone that is a rock source), they have a better calcium bio-availability than limestone as it has been predigested by the animal it came from.
It can be fed free choice to poultry as a superior calcium source, promoting egg shell strength and quality.
Coastal Calcium & Poultry Oyster Shell is an excellent source of calcium and stays in suspension throughout the feed line making calcium available to all birds. This high and consistent form of calcium is available to the bird many hours after feeding to help protect the medullary bone and provide stronger bones.