I was just looking through one of my magazines & saw the 27% protein & . It didn't say anything about carbon but 5#=$15 10#=$20. There is no way I could afford that. Do you pay that much for yours?
All of what I'm going to say is probably pointless except for a little insight. Feed is made from mostly plants or some animal product. All living things have carbon in them so unless extra carbon is added (which I don't have a great enough understanding to know why) I don't think it has...