This article makes me go "Ick" inside. I know you can raise some fish on rabbit manure, and do it successfully, but the idea of using it to raise ruminants.. so goats, cows and the like, for some reason just raises my "ick" factor. The article notes there are some concerns about using it, but thinks with time is a viable option.
" Running the Daisy system for rabbit feces in rumen fluid gave some inconsistencies, weakened the functional relationships, and appeared not to be correlated with the potential values of IVTD and NDFD. Nevertheless, the energetic potential of feces appears to be similar to some conventional crops at different degrees of maturity. Thus we conclude that rabbit feces has potential value as a ruminant feed and for biogas production."
It is winter now and so protecting your rabbits from the elements is a good idea. Michigan State University puts out this timely article. For my rabbits it means putting an extra tarp over the rabbitry and switching from bottles to crocks. The guinea pigs get a light over them. Other than for bitterly cold winters, this keeps my rabbits comfortable (as they reproduce and grow well).