They are not new to the feed and have actually been on it for months - Ive been doing a battle of the wills for them to eat it and Im afraid Im loosing!
I use a home-mixed feed that they have has since hatching but I just moistened it when they were young and they would gobble it up. Since switching to the fermented they barely touch it. I use the one-bucket method of taking out what I need daily and replacing it. I used to do the individual bucket method but switched as my feed demand went up with growing numbers, They reacted the same to the fermented feed in both methods.
They really seem to be picky and wont try new things at all. Not yogurt, cooked rice, other scraps or even vegtables and greens that are foreign to them. Are all ducks like this (first time with ducks for me) or just khakis? Its actually frustrating! My hens and guineas gobble up everything I bring them especially the fermented feed and the ducks turn up their bills.
Ill try chopping the greens up and mixing them into their feed and see if that helps. Crazy quackers.