Last 60 days they were on a ryegrass/crimson clover mix. It seems to have put a nice finish on them. I wish I would have weighed them the day they went on the ryegrass. They were putting the weight on those last 60 days. I'm working on a forage chain that will work in my environment. Right now centered on the native grasses. Ryegrass/crimson is not a native. I used it to help get me out of a bad situation (drought). Eastern Gamma grass was the most productive grass thru the drought period. I planted about 40 acres of it this past spring. It takes a while to get started. In the mean time I'll be grazing a corn-LabLab mix this july/aug if the weather works out (grazing corn before milk stage). LabLab is a nitrogen fixer which will climb the corn giving the cows a nice mix with each bit and give the corn a little nitrogen. I've got a few other experiments going on as well. My goal is to have a forage chain of native grasses. I believe it is doable. But I can also see that some of the introduced grasses/plants may help fill the voids. One other note- I have not even gone into animal genetics. It plays an important role on the ability to finish on grass. Was happy with the finish we got in the picture. But working to get it a notch or two higher.