U_Stormcrow
Crossing the Road
Thanks for your detailed responses. That all makes sense and is consistent with my general understanding and why synthetic methionine is added to so many chicken feeds.
Sure. I don't know anything someone can't learn in a few weekends of study. Well, some trivia, but most of what I answer here on BYC can be uncovered pretty quickly (and isn't particularly disputed) with just a little bit of research or a good keyword search. It was actualy BYC that led me to most of the research, actually. I only started my own chicken journey a couple years back.