Meat & bone meal is the dried and rendered production from mammal tissues. It does not contain horn, hair, hide trimmings manure, stomach contents, added blood meal or poultry by-product. The calcium content should not be more than 2.2 times the phosphorus content. Calcium higher than this indicates additional calcium from a source other than bone. The protein in meat meal & bone meal is degraded relatively slowly is rumen. Meat & bone meal can be fed as a protein source. It may be included in the grain mix at a rate of up to 5% or fed at up to 1.5 pounds (0.68kgs) per cow per dry. It is not very palatable and should be introduce in to the ration gradually.