[scary_dream]

This is novel, but I'm not too worried about it because I doubt that it will come anywhere near being a common practice. Society will have too hard of a time accepting it, not to mention I expect the animal rights activists will be all over this.

I personally think it's wrong to use sheep as our own expendable organ orchard, not to mention it irks me about the mentioned viruses this could introduce to the human race.

Bad idea, scientists. Bad idea.