the Idea disturb me but if the experiment proved to be successful and is approved this could help a lot of people who are in need of body organs. besides, this isn't the first time animal parts are used to treat someone. I remember reading once that tilapia skin is being used to treat burn injuries. anyway, I am pretty sure this experiment will definitely disturb a lot of people.
I am not sure what's the disturbing part in this would be? Scientific progress is cool and most human parts have surprisingly simple function that can be replaced, or will be replaced in the future.
Consider this as a placeholder for artificial organs that most definitely coming. I guess some people are distrurbed by prostate legs, walking sticks, wheel chairs, ostomy bags or eye glasses. All of those invented to keep us moving and living our lives.