I've read about 40 pages of this thread and still can't find the answer.
Why would you mix such large quantities of scratch grains with bagged feed when fermenting? I understand that nutrients are more readily absorbed when feed is fermented but to deplete the total protein percentage with 50/50 mixes and the like seems too much. What am I missing here?
You are missing that your birds don't need all that protein in the first place to produce an egg...and particularly when they slow down for the winter months and are barely producing at all. You cannot increase rate of lay by merely increasing proteins, though many on this forum seem to believe that you can, so they pour on the proteins in an attempt to get more eggs...or to keep chickens "warm" for the winter. Mixing 16% layer ration with a cheaper grain like barley, at almost 12% protein, you really aren't lowering it all that much but are cutting some cost....all the while not affecting rate of lay or body condition one iota.
Why feed the higher proteins and suffer the cost of it when it does absolutely nothing to improve lay or maintain body condition during slack production times? Folks have been doing this for a long time before BYC ever came on the scene...my granny never fed anything more then field corn and was always in eggs, summer and winter.
I'm not a fan of high levels of protein for animals unless they are performing...hunting dogs, racing horses, working animals...and hens that are in peak laying season, wherein 16% protein is quite adequate. You could go even lower and get by quite well. I'm also not a fan of wasting money...hence the fermented feed experiment.
Right now I'm feeding 100% layer(
the cheapest feed at the mill right now, which is certainly not the norm) with a little BOSS thrown in and I'm getting one egg a day from a six year old hen...and the rest of the hens aren't laying a thing, though they are old enough to be putting them out. This same hen will produce that egg whether she is eating just the layer ration or if it is mixed half and half with barley or oats...I know this because she has been doing this for me for many years now on just that cut of feed.
Just take some time over the years to play with your feeds and see what produces results...and what doesn't...and you'll soon find that you really don't need high dollar feeds or high pro mixes to get production or keep birds in good condition.