I went on the web looking for information on DiCal and posted above and below some information on it. Apparently in the mixes it simply adds calcium and phosphorus to the mix in high amounts. The bag I purchased calls the stuff "DICAL 21" and was manufactured by lakeland animal nutrition. The incredients in the bag are simply monocalcium phosphate and dicalcium phosphate. So felllas just start calling them feed stores.

I pulled the statement below right off the web:
Calcium and phosphorous cannot be synthesized by the body and must be provided at adequate levels in the daily diet of animals. Their primary function is to provide structural support for the body (i.e., bones and teeth
Calcium and phosphorous cannot be synthesized by the body and must be provided at adequate levels in the daily diet of animals. Their primary function is to provide structural support for the body (i.e., bones and teeth). Typical natural animal feeds have a relatively low content of these minerals. Therefore, animal feed supplements are often utilized to meet this deficiency.
Due to low cost, one type of animal feed supplement that has been used historically is recycled animal parts. However, as has been highly publicized, this practice is suspected of transmitting "Mad-Cow" disease by sub-viral prions that are not destroyed in normal sanitization techniques. These prions pose a threat to humans as well. Animal feed supplements from phosphate rock, however, have a high biological availability and nutrient content that can safely enhance feed formulations without the risk of prion transmission.
). Typical natural animal feeds have a relatively low content of these minerals. Therefore, animal feed supplements are often utilized to meet this deficiency.
Due to low cost, one type of animal feed supplement that has been used historically is recycled animal parts. However, as has been highly publicized, this practice is suspected of transmitting "Mad-Cow" disease by sub-viral prions that are not destroyed in normal sanitization techniques. These prions pose a threat to humans as well. Animal feed supplements from phosphate rock, however, have a high biological availability and nutrient content that can safely enhance feed formulations without the risk of prion transmission.