Okay, I've just actually read through all 10 pages here....phew!
That's a lot of info!
Here's my story: I started out with Southern States brand feed, which is an "all grain poultry layer/breeder" feed. It states that it is a complete vegetarian formulated feed, and it does not list "soy" specifically.
After some problems with a Marans rooster, it was mentioned by a friend that she found that breed seems to need higher protein. She suggested what she uses ~ Purina Flock Raiser. I bought that for a while, but when it got up to $15/50lb bag, I went back to Southern States again. After a new discussion on feed among local chicken keepers, it was pointed out that although the Purina cost more, it seemed to be more filling and stretch further. I went back to Purina again.
However, I am now slightly concerned with the amount of soy that seems to be in Purina and the fact that it lists "ruminant meat & bone meal free". First, I think the key to good nutrition for not only ourselves but also the chickens is diversity in the diet. If the feed is primarily soy, then that just doesn't seem good. It also occurred to me that maybe the reason that it stretches further is because it has more soy filler in it...?? Secondly, I also have to wonder--why specify no "ruminant" meat/meal? Does that mean that it includes chicken, like someone else said, or possibly pork?? Ruminating animals include most farm type animals other than poultry or swine. I guess I'm a pessimist when it comes to trusting big business ~ my gut says that if they specify no "ruminant", then that means it has everything else in there.
As far as "animal protein" in my chickens' feed, I'm all for it ~
IF I thought they were using "quality" animal product rather than all the garbage that gets shoveled out when they're done. My chickens can't free range (too many predators), but they have a large run where they can search for any bugs that happen that way. However, I clearly see that they would be lacking in "insect protein", so what would you all suggest for a way to supplement if I use the 16% So. States feed with no animal by-product? I do throw-out scratch one or twice a day that has BOSS in it.
Lastly, HLAC, I have the Purina "Flock Raiser" tag and it does list DL-methionine (11th on the list). I think I have to agree--I'd rather "real" amino acids than synthetic ones. I think we consume far too much synthetic garbage and GM stuff already.