Would Rabbit Bedding for Tomato Mulch Prevent Blossom End Rot?

I was cleaning out the barn this morning, and had the realization that if blossom end rot in tomatoes is caused by a calcium deficiency, and rabbit urine is high in calcium, perhaps my rabbit bedding would make the perfect mulch for my tomatoes?
Has anyone tried this? I'm using maple leaves for my rabbit bedding, so I don't see any problems with putting that on my gardens. Any other problems you can forsee? I'm excited to try it out this summer!

(September 2015 Update - it looks like it worked! Not a sign of blossom end rot in my garden this year!)