Organ Farming

I have heard of a new and emerging medical technology called organ farming. There are many people across the world who die every day due to the shortage of organs.

Organ farming is where a genetically manipulated cow or pig (mostly a pig) is implanted with an embryo has been changed to have some human stem cells, so that the animal they give birth to is a pig but with say, a human liver. This organ would also have a better chance at lasting in the persons body, as the stem cell would come from the human who needs the liver.

I am interested in what the Jewish perspective would be on this medical technology, and if it is accepted as a possible option for a Jew who urgently needs an organ.