This doesn't cause obesity problems which inhibit laying? There's so much to read out there, it sounds like their meals must come out of a test tube or they'll all get sick and stop laying. But when I feed myself, I just eat a variety of healthy foods and it all works out fine. I appreciate your advice!
Ask a dozen BYC folks and you'll get at least 14 different replies. I have no qualms about feeding layer to my roos. My avatar roo will be 4 this spring, and sadly will need to go in order to make room for new blood. I expect he'd easily live an other 4 or more years. My routine is this: if I have youngsters, the entire flock gets unmedicated starter. The entire flock goes on layer any time after the pullets get their cluck. This means they are entering "puberty".
I have changed my stance regarding the protein issue over the last few years. I used to be in the "more is better" camp. Now, not so much. While "they say" that birds should not have layer if they are not actively laying, some of the "they say" folks also advocate for higher protein. I get that. Theory goes that is birds are getting extra snacks, that decreases the overall protein content of the diet, and layer is "bare bones" (what ever will meet the standard is what goes into the bag. The manufacturer is bagging that feed to make a profit, not to provide superior nutrition)
Where I leave the pack and march to my own drummer is regarding "extra protein". I don't molly coddle my flock. They get fermented feed (that process actually increases the total protein, specifically Methionine and Lysine, and B vitamins in the feed.) My birds don't get scratch unless it's used as black mail to get them back into their run in a hurry. They get plenty of free range (IMO free range provides a nice balance of veggies and protein)
So, I don't have a need to buy the more expensive, higher protein feed. What "they say" folks fail to take into consideration is the correlation between high protein diets and the incidence of gout.
While some literature indicates that extra calcium in layer CAN cause gout and renal failure in non laying birds, that does not mean that it WILL. Am I irresponsible in my approach? Depends on who you ask!
One very important consideration, no matter what you choose to give your flock: Feed older than 6 weeks is rapidly loosing it's nutrients. The grains are becoming rancid. The proteins are breaking down. What ever you choose to feed, be sure it's not old feed! Check the mill date on the bottom of every bag of feed. I walk out of the store empty handed before buying old feed.