I read a long time ago about a fellow who feeds nothing but compost to his chickens. I found it fascinating. I doubt many of us could have enough compost on hand to do what he does...but it's interesting stuff.I was wondering the same thing. I'm sure these farm store chicks were bred for high egg production rates, and that could very well be while their immature reproductive tracts are trying to push out so many eggs.
I fed them the high protein feed because of the amount of time I was letting them forage in the yard, and was giving them snacks/scratch at times. I thought it would balance things out protein-wise.
Like you said, it may be that my pullets were bred to do best on a 16% protein feed. Maybe the higher protein was throwing things out of whack, and causing their egg laying machinery to work too fast.
https://www.permaculturenews.org/2013/12/06/grow-chickens-without-buying-grain-feeding-compost/
And here's what the FOA has to say about raising chickens that way.
https://www.fao.org/family-farming/detail/en/c/1615843/
Editing to add that maybe high proteins has nothing to do with it. Still reading and thinking...
