I will. I have a bag sitting on my carport right now waiting to be opened. Only issue is most show it needs to be 28% protein and even game bird starter around here is only 22 to 24%. I have pork liver from our butchered pigs that I am going to cook and top dress the feed with.
You an also use eggs, cooked dry beans. Heck I've even feed them ground turkey. My meat birds go nuts for it. Don't leave it out though since it can spoil quickly.
How long do they need to be setting before I can substitute?
Try putting them under her at night, but I usually like to let them sit some eggs for a few days at least, but normally a week and they're good to go.