Turmeric Powder is actually a human food cooking ingredient, it is what makes curry powder yellow it is one spice of many in the curry mix, turmeric sometimes occurs in other foods as a food colouring (example custard). To get the most medical use you need the straight turmeric powder.Blue kote says cattle can be treated with it, aren't cattle considered to be a food animal? Anyways anything that contains antibiotics should not be eaten same goes for eggs for about 28 days. I am sure turmeric powder tells you that you should not to eat the animal or eat the eggs for certain amount of days am I correct?
From my research on it, it is antibacterial, anti-viral, anti-microbes, anti-cancer, does tons of different stuff all good for the body and immune system both human & animal. It is heavily used in Asian/Middle Eastern cultures in both cooking and as a medical herb for healing both people and most often roosters in those cultures. Supplements are available in the West, but I strongly suggest you research any pills before paying big bucks for a common spice.
I used Reg Yellow Turmeric Powder in my healing of my critters (who hurt themselves). I am currently adding it to my dog's diet to boost her immune system.