Select I and Select II are made using the finest ingredients of the highest bio-availability, no "secret" or "super" ingredients. Select I and Select II formulas are good, sound nutrition based on university research and data provided by the National Research Council. Select I and Select II formulas provide significant amounts of nutrients in a proper balance. Your horse better utilizes calcium and phosphorus when they are fed in certain ratios. Alfalfa hay is high in calcium and low in phosphorus, so a high phosphorus supplement like Select I is required when you feed alfalfa hay. Grass hay is low in calcium and phosphorus, so Select II is required to properly supplement grass hay or pasture rations. Now you can correctly supplement for the type of hay you are feeding rather than using a shotgun approach for all hays.

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