Mixing animal and human dna

I was listening to CBC radio this morning about the making of "spare parts" for fixing people when they are ill by making what is needed by mixing animal and human dna. So far here, they have made pigs with human blood so the pig parts used won't be rejected by the human body. A U of Manitoba proffessor admitted that this could lead to ethical issues. China has been doing experiments in this area and we all KNOW their record on Human Rights. Anyway to me this sounds like a some sci-fi making of "drones" that do the will of man- kind. PLEASE NO MORE CHANGE (see previous blog)