I'm sorry I missed your post. Becky's Recipe is a disaster.
Becky's with corn formula works out as about 15.8% Protein, that's low, 8.1% fiber that's high, 14.1% Fat (that's 4x what's recommended for a chicken, and more than twice what's recommended for a CornishX when fattening for the table in its last weeks of life). Among the Amino Acids, its 0.31% Methionine (low - a few commercial feeds are this low, but its below the recommends for all growing birds and some birds generally. Lysine of 0.6% (see comment re: Met), Threonine of 0.55 (you won't find this on nutritional labels, but its borderline), and just barely hits the recommends for Tryptophan @ 0.21.
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Oyster shell - with or without crushed egg shell, should always be served in a seperate dish, not mixed in with the feed.
Adding the liver was the smartest thing you could have done. Any idea how much lever you added, pounds wise???
and yes, grind what you have up, serve it damp to help keep them from choosing favorites and reducing waste. There's no way to take fat out of the recipe - all you can do is thin it out somehow.
*ASSUMING* you added a 5# liver, the cheapest way to thin the recipe out, and improve it somewhat? Prepare 10# (dry weight) of black eyed peas with 10# (dry weight) of enriched polished white rice, mix that in. Your new numbers are: 16.63, 6.9 (many commercial feeds are this high), 11.5% (still way too high), 0.33 (bottom of the commercial feed range), 0.74 (acceptable), 0.60 (acceptable), 0.21.
I rarely troll the Chicken Behavior forums, and missed your "thin egg shells" posts there. Apologies. Also, lay off the treats - BOSS, BSFL, various larvae, grubs, etc are all super high fat. And oatmeal is high in beta glucans - for human digestion, that's a good thing (to a point), in chickens, in contributes to sticky poops and can inhibit some vitamin absorption.
and for what its worth, GBetty's recipe has FAR too many seeds, in far too great a quantity - that's where the majority of the fat in her recipe is coming from - some of those ingredients are almost half fat by weight. She's doing it to inflate here protein numbers (she isn't looking at amino acids at all) - cheap lean animal proteins are a better source of both the protein, and a better AA profile. Liver (unless you process your own animals) sadly isn't cheap [anymore].