Well let me tell you about an experience I had with fresh rabbit manure. Two winters ago, the iris bed next to my house was a gathering place for rabbits to get shelter. They left their calling card in many places there. That next spring I had the worst case of rot I ever had only in that bed. No other beds were affected. It wasn't about burning, it was about the undesirable bacteria. Since then I fence that off during the winter to keep them out, and I haven't had a problem since in that bed. It might be fine for other crops, but I wouldn't use it fresh on my irises. IMHO
