I understand why this is being considered, and I know that it is intended to help save human lives. But it’s the stuff out of science-fiction horror novels.
What could go wrong?
How about a complete loss of the distinction between human life and animal life? Once we begin mixing the growth of human tissue with animal tissue, we begin to change the actual nature of that creature. At what point do something like this become human? Or semihuman?
If our worldview is based on a Darwinist view of nature, then there’s nothing to see here. But if human beings are something different from animals, and this is very troubling indeed.