10-25-2011, 09:34 AM
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I found this...
The biochemical pathway which produces both pigments involves an enzyme that uses copper ions as an electron acceptor. Thus for the pigments to be produced fully there needs to be copper present in the cell.
If the horse is short of copper then the enzyme can't do it's job and the pigments are produced slowly if at all and sometimes in a different form.
So to ensure that the animal gets it's full dose of pigment synthsized you need to ensure a supply of copper in the diet.
Paprika is rich in copper flavenoids, especially the Hungarian paprika.
Thus as long as you feed a supplement rich in copper the hairs will get their full dose of pigment. BUT this only happens when the hairs are being produced as they grow, once they are grown, you cannot add any more pigment, you can only either lose it to the action of sunlight and or chemicals.
This is by an article by Melyni (PhD) PAS, Dipl. ACAN.