I use purina green. I don't have any trouble getting my does to breed (well not usually) it happens ocasionally, but I think it does for everyone, and it is more a question of timing and weather. They have changed the formula recently and added pappaya and probiotics. They also now state that the use alfalfa meal where before it was "high protien forage components"
The rabbits took to it fine. The only problem I have had is that a few weeks ago, the tack shop I was geting it at stopped selling feed. TSC has started though so I began buying it there although it is more expensive. When I first started using the purina from TSC, by rabbits didn't eat as well for a day or two. I looked at the feed tag, and it has the same ingredient list, but is shipped from a different regional mill. (I don't know where, they only give a mill number, the original feed came from the mill outside St.Louis as mf former supplier picked it up there) Anyway, the must be using a different kind of molassas or something. After a day or two they started eating it just fine, so I am assuming it is just the normal situation one encounters when the feed tastes a bit different. I have been feeding it a few weeks now with no problems. Somone said the "Manna Pro" feed is good if you don't like the Purina.
I would like to state that was bought out by Nestle' a several years back, and the Purina now made in Canada is different than what is made in the US, it may have to do with Agricultural laws or something. I have not heard anyone in Canada that likes it, so if you live there you might want to stay away from it.