I have a pekin duck that has a leg problem. Help!!! Hes two weeks old and hasnt been able to walk on his one leg for about 4 days. I have added poly vi sol without iron to hos water and added brewers yeast to his food thinkig it was a niacin problem. His foot started to swell so i wrapped it for 5 minutes in a towel soaked in epsom salt and water. It now looks like the knee is turning kind of purple and i cant see the veins in the webbing of his feet. Im trying everything. Please help!!!!