That's true for cottonseed meal also. Too much of it and your yolks will turn salmon, green, or almost black. And I've heard repeatedly on here never give your chickens dairy (except yogurt). My chickens have no problem with ACV in their water - I even put it in my dog's water - but my cat won't touch it. I give my chickens black oil sunflower seeds mixed with their scratch and during the winter gave them a higher protein layer pellet and they layed all winter - never missed a beat.
