I have been feeding x-cel for a few months now. I also feed Mazuri waterfowl. I asked this same question awhile back and most of the responses I received were positive. I don't think there's an X-cel website because it's a small, local mill.
All my ducks and geese will eat it. One pair of ducks that were raised on and only ate Mazuri for a couple years have kind of turned their noses up at it, but they do eat it. The other ducks and geese eat it just fine.
I have not had any health issues. When there was the Mazuri Waterfowl recall a little while back, I was glad that I have been feeding a mixture of both. None of my birds got sick (possibly because Mazuri wasn't their sole diet).
I still think Mazuri is a better quality feed, but the x-cel seems to be fine, too. All my birds are outside on grass all day, too. I figure they get a lot of healthy benefits out of the fresh green grass, weeds, bugs, and sunshine.
