This paper considers the ethical issues raised by xenotransplantation underfour headings: interfering with nature; effects on the recipient; effects on other humans; and effects on donor animals. The first two issues raise no insuperable problems: charges of unnaturalness are misguided, and the risks that xenotransplantation carries for the recipient are a matter for properly informed consent. The other two issues raise more serious problems, however, and it is argued that if we take seriously the risk of transferring new infectious agents (...) from animal to human populations and the interests of donor animals, then a moratorium on xenotransplantation is called for. The paperfinds that the recent Nuffield Council and Department of Health reports on xenotransplantation are insufficiently cautious in the conclusions that they draw from these considerations. (shrink)

The invocation of moral rights in moral/social debate today is a recipe for deadlock in our consideration of substantive issues. How we treat animals and humans in part should derive from the value of their lives, which is a function of the quality of their lives, which in turn is a function of the richness of their lives. Consistency in argument requires that humans with a low quality of life should be chosen as experimental subjects over animals with a higher (...) quality of life. (shrink)

: Animal ethics has presented convincing arguments for the individual value of animals. Animals are not only valuable instrumentally or indirectly, but in themselves. Less has been written about interest conflicts between humans and other animals, and the use of animals in practice. The motive of this paper is to analyze different approaches to interest conflicts. It concentrates on six models, which are the rights model, the interest model, the mental complexity model, the special relations model, the multi-criteria model, and (...) the contextual model. Of these, the contextual model is the strongest, and carries clear consequences for the practical use of animals. (shrink)