Yes. Get some. It is "stemmier" than tift 85 or 44. And therefore supposedly less likely to cause impaction. My horses love it.
You can contact the GA Ag Dept Division in Tifton. Or Abraham Baldwin Ag. College which is also in Tifton. Both do a lot of testing on hay. (Which is why there are a lot of different "types" of hay named "tift.") Both can tell you all about hays, including russell hay.
My goodness, cloudyandcallie. I post a question and not 20 minutes latter I get the PERFECT answer! Thank you so much. I was told to contact "UGA" and couldn't find any connection between the hay and what I think is meant as "Univ. of Georgia" (but I'm not sure). So you've given me the institution I needed to find as well as info about what had me most worried (the colic issue). I may very well make a trip to Tifton, if I can find someone with Russell or Tifton 85 up there.
There are growers in central Florida who grow Tifton 85 and Tifton 44. I have used both and much prefer them to Coastal, which I never buy. If they are well fertilized, they can test out at 16% protein, pretty good for a grass hay. I don't recall off hand the rest of the nutrient testing.