Feeding trials have shown that the Dietary inclusion of specific levels of copper, zinc and manganese proteinated (chelated) minerals in conjunction with the oxide and/or sulfate forms of the same minerals can increase the reproductive potential of dogs. Tests have shown an increased potential as high as 1.3 additional puppies per litter. The proteinated (chelated) minerals appear to reach the point in the digestive tract, best suited for absorption of that mineral, with very little loss of potency. Testing of proteinates on other live stock has shown a strengthening of bones and hooves, as well as the increased reproductive potential.

References: Lowe, J.A.,D.J.A. Cole and J. Wiseman, 1994. Absorption and retention of zinc when administered as an amino acid chelate in dog. J. Nutr. 124:2572S. McDowell, L.A., 1992. Minerals in Animals and Human Nutrition. Academic Press, Inc., San Diego.

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