8- 9 cups of fermented feed for my 16 chickens a day ...sometimes they finish it sometimes they dont .
If you are overfeeding them they wont lay ..the fat blocks the vent I believe .
But as you werent feeding them layer ..they may have not had enough calcium .
You can increase their protein other ways ...
Add some milk or yogurt , cheese or fish or meat to their diet
I give them bread cubes as a treat & moisten it with a little yogurt & milk in it
or try the fermented feed that increases the protein
Well it doesn't sound like I'm over feeding. I feel if anything I feed them less because they all free range. Well except the silkies, but those aren't the ones I'm worried about. I'll figure this out....sooner or later