Description
What it is. Marine shell calcium carbonate is a product of natural origin obtained from marine shells, such as oyster shells or seashells, ground or granulated. Its composition is mainly mineral, with a calcium dominance.
What it is for. This raw material is generally used as a source of calcium in compound feed for animals. It is notably used in formulating diets requiring calcium supply, for example in laying hens for eggshell quality. The particle size (ground or granulated) allows adjustment of calcium release speed depending on the physiological stage and target species.
Points to watch. The calcium content must be declared, as well as acid-insoluble ash if it exceeds 5%, reflecting possible purity variability depending on origin and grinding process. Storage must limit moisture uptake, which could affect the product's texture and homogeneity.
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