"too high" for chickens is generally thought to be somewhere north of 30%. There's some scant research suggesting 24% or so for ducks and other waterfowl. I can't speak to the needs of guineas, turkeys, quail, etc.
For practical benefit? I've found somewhere around 24% in the growing stage, and 20% in the maintenance (adult) stage works best for me and my mixed flock of mutts. Your experience may vary a bit.
CP isn't the be all/end all. Its used as an analog for what we are really interested in, the AA profile. We assume that a feed with ahigh CP has high amounts of Methionine, Lysine, Threonine and Tryptophan (the big four, only two of which appear on most feed labels). That's not always the case. A lower CP feed with higher levels of Met and Lys is generally superior to a higher CP feed w/ less of those two key AAs, pound per pound.
Hope that helps!
Haven't been to Bushnell in an age.
For practical benefit? I've found somewhere around 24% in the growing stage, and 20% in the maintenance (adult) stage works best for me and my mixed flock of mutts. Your experience may vary a bit.
CP isn't the be all/end all. Its used as an analog for what we are really interested in, the AA profile. We assume that a feed with ahigh CP has high amounts of Methionine, Lysine, Threonine and Tryptophan (the big four, only two of which appear on most feed labels). That's not always the case. A lower CP feed with higher levels of Met and Lys is generally superior to a higher CP feed w/ less of those two key AAs, pound per pound.
Hope that helps!
Haven't been to Bushnell in an age.
