Let's try to come up with an inexpensive way to feed our chickens, that way, the feed companies will have to lower their prices to increase sales again
. If you have any organic recipes, that would be awesome!
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While fermentation might change the protein content a bit by the bacteria using some free nitrogen to produce protein you will not double or treble the protein content of a fermentation product if you keep all of the contents of the fermentation vat. In most fermentation processes the protein content is not the primary product, in ethanol it is alcohol, in brewing it is the beer.Lazy J maintains one cannot compare our FF with brewers grains because one is distilled into a concentrate and the other is not. He could be right about that and I have no way of actually knowing for sure how much our proteins are augmented by fermentation or if they are just changed into a more usable form and that is what the study was trying to convey.
I think your lysine will be just fine according to this article...if you can trust the validity of it:
http://www.fao.org/docrep/x2184e/x2184e06.htm
Here's a good link about feed ingredients and their nutritive values....it shows brewers yeast at being pretty high: http://ingredients101.com/bydried.htm You can see other ingredients in a column at the right of that page.