A similar experiment performed in America (at least...more than likely elsewhere too.)
The idea was to study properties of a beating heart. In short, they cracked a heavily sedated dog's chest open and exposed all organs. Some connections were made to arteries and veins to directly measure things like cardiac output. Responses of cardiac output, heart rate, and a bunch of other things I can't remember at 2:30am in response to things like drugs and fluid injections. It gave us the knowledge that is now used to perform heart transplants and treat heart attacks. I've seen video of one of the runs of the experiment, and it's a bit disturbing to watch.
I consider myself to respect other living things, but there are experiments done on animals that have allowed us to save countless lives. Half of me thinks its a fair trade, the other half says I wouldn't feel the same if I was the dog.
By the way - the experiment I'm describing is very well documented, and not some random thing I saw on the internets. Not that I'm doubting this video. I'm not sure whether it's real or not.