Surface area makes a huge difference in how much the fermentation process alters the chemical composition of the food. Ground meal makes a much better fermentation target than whole grains as the bacteria has a lot more surface area to eat into. Same reasoning as pulping grapes for wine rather the simply using raw/half grapes.
If you are fermenting, then chicken feed is the far better target. You can add scratch grains, but don't count on a high percentage of it to be consumed during the fermentation process.
Thanks!
I have a whole barrel full of barley that won't sprout, so I'm trying to find ways to use it. It will be of SOME more use as food when it's soaked and fermented than just dry, right?
So time is not an issue, it's not going to increase in value the longer it sits in the fermenting-bucket?

Barley is, I think about 14% protein. Make sure you are adding it to a balanced formula that you aren't diminishing the protein value too much. Not less than 16% in general for layers. It's the amino acids in the protein that is important.
So, the whole barley takes a little longer to ferment than if it were ground. You could get your barley soaking an extra day before adding it to your ferment, or experiment with extra dayS. Even un-fermented, barley is better than corn all day long! So use it up. I just recommend not going overboard on whole grains, as many of them are missing key nutrients and much lower in protein than most formulated rations.


