Abstract: Farm animals and their products have a longstanding and successful history of providing significant contributions to human. T here is a huge gap in supply versus demand of human organs for transplantation. Human organs are being grown inside sheep and pigs in a bid to save the lives of those on organ donation waiting lists. Scientists in Japan plan to start systematically growing human organs inside of pigs within 12 months. The goal is to increase the number of organs available for medical transplants. Japan’s government is creating new guidelines for scientists to govern them as they grow human organs inside animals. Researchers in USA are taking human stem cells, injecting them into animal embryos and then implanting into a sheep or pig where they were gestate and possibly be able to provide viable organs to human. Ethical arguments expressed about transplantation from transgenic animals to human are wide and have various ranges, based on their subject and they are the arguments in two main categories deontological and consequential list.