Feeding calcareous marine algae as a rumen buffer

Rumen buffers such as sodium bicarbonate are commonly included in lactating cow diets to stabilize rumen pH. Recently, calcareous marine algae have been used for buffering dairy diets. Lithothamnion calcareum is a red alga of the Corallinacea family whose main feature is the formation of calcium and magnesium carbonate precipitates in its cell walls. Calcium and magnesium are the major minerals of this alga, and other trace elements include iron, manganese, boron, nickel, copper, zinc, molybdenum, selenium, and strontium.

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