I've seen several people say that they switch over at the first egg, I plan on trying to, depending on how much I have left, if it's quite a bit i'll just mix the two to use it up. I believe your supposed to blend the feeds anyway to transition them onto a new feed. I would definitely offer some sort of calcium though.
Yay! I'm very happy for you - mine are about 17 weeks, I'm hoping to get eggs soon because my husband is getting impatient and wanting to know when our investment is going to pay off
Thats great and only 17 weeks!!! I agree, switch to layer food, however I have never been able to get my chickens to eat pellets, they prefer crumbles and here where I live crumbles do not seem to be anymore expensive.