The breeder I got my AO's from. He said to aid in long tail growth feed fish and lettace or cabbage if I don't want fertile eggs. He did say it is only temporary. And the hen will still lay if she is going to during winter. I really hope mine just stops laying. In about 5 days, I will be putting my last eggs in the bator for this year. I'm only collecting the AO's eggs. My other roo for my EE had to be culled the other day. She is probably still fertile but it would be by the AO rooster. I want to be able to sell the eggs so I can't hatch any of their eggs to get more hens for selling eggs for hatching.