None! I'm talking about meat from large chain companies. The meat that I saw at the store had preservatives in it so I buy from local butcher shops now and make sure they don't have anything added to them.
I'll get a picture of the next label I find with a preservative on it. I don't buy meats from the dollar store, as the closest one to me is an hour away and I didnt see meats their last time I was in there. I buy all of my meats from a local butcher shop :)
My friend sent this to me and she does actually have a website and I'm pretty sure she has posted it on there. I did get permission from her to post it on here :)
And sometimes I do pick up meats that say USDA, FDA ect. and it has preservatives in them. So I guess just make sure it doesn't have any weird ingredients or preservatives in them before feeding it to your flock :)
https://www.thehappychickencoop.com/can-chickens-eat-rice/
https://chickenpets.com/diet/uncooked-rice
https://ranchr.ag/blog/can-chickens-eat-rice/
https://www.farmanimalreport.com/2022/01/02/can-chickens-eat-uncooked-rice/
Those are just a few of the links I found saying that it is...
Most meat at the store comes with preservatives and they aren't healthy for chickens. Most un preserved raw meat is good for them though! Make sure not to feed raw chicken because that could cause salmonella :)