Now, I have been told by Cornell University that cocci is RARE in ducks. If you look at the Long Island Duck Research Lab website, they list the most common illnesses in ducks and you will see that Cocci is not even listed there. This Lab is part of Cornell and I have a friend who works closely with them and was nice enough to hook me up with one of the duck care specialists to answer a ton of questions for me.
I feed my ducks non-medicated crumbles with a small sprinkilng of dried kelp. Treats: peas, green beans (cut up), mashed up boiled egg. When they are a couple of weeks old, I add a small amount of crushed alfalfa pellets and switch to a duck grower pellet as soon as they can eat it to get the protein down.
Actually, the medicated feed isn't exacly an urban legend because at one time, the medication used in the feed was not good for ducks, but over time, the types of medication have changed and the most prevalently used medications are fine for ducks.
Personally, I prefer not to give them medications of any kind if they don't require it.
