I’m a stem girl. Science matters.
currently I only have two choices. I have scoured sources and short of making my own feed I’m stuck. One is back ordered, (my favorite grower crumble) and the other is a layer feed.
Do you think i can stretch my current supply if I do a 2/1 ratio with the layer feed? 2 cups grower crumble 1 cup layer?
At risk of sounding corny, I have all my eggs in one basket, and I’m getting worried. I have about 40lbs left for 9 chickens (bag and a 1/2)
Ok, so an essential component of good science is to be aware of your own biases. You have a pressing need, so what you seem to want from us is confirmation that you can feed layer to a rooster (and pullets) and everything will be fine.
We're saying, it will not be fine. However, he won't keel over right away. Plenty of people feed layer to roosters and see them live for a while, years even. But one day, when they do die, their kidneys and other affected organs will be the reason why. Unless they get eaten by a predator first, or some other tragedy occurs, obfuscating the data.
Another choice you have might be to wear a mask and long dishwashing gloves when you go to scoop feed. An all flock or 20% chick grower should be easy to find if you don't have to make it safe for yourself to swallow.
I'd like to point out, that set feeding schedules of only twice a day are not enough for an animal that naturally forages throughout the daylight hours. Unless the chickens find a lot of goodies out free ranging (in a suitable environment), a "mealtime" minimum should be every 4 hrs. Free feeding is a lot easier.