Duck Feed Question

[dragonshiner]

Okay,
So until recently my flock of babies has been raised as free range ducks/ducklings. I would feed them about 3-16oz scoops of 18% Duck Grower, a few handfuls of rolled corn, and two scoops of corn and oats mix, then they would spend the rest of the day foraging for themselves. But with winter coming up I'm going to have to be their sole source of feeding and was wondering how much feed you give your ducks daily? I don't want them to starve and I don't want to break the bank either.
Also what do you feed your adult flock? I was told that I could keep them on Duck Grower all their life by the lady at the feed mill. Especially seeing as they don't carry flock maintenance for waterfowl.

 

[ChickenToes]

Once my ducks start laying (a long, l-o-n-g) time from now, I'll put them on layer feed, just like my chickens. I can't answer your question about how much to feed, though, because I just keep the feeders full all the time. I do plan on not giving them feed and water at night because they make such a mess.

Almost forgot: A lot of people just use flock raiser for all their birds.