A balanced, accessible discussion of whether and on what grounds animal research can be ethically justified.

Few human uses of nonhuman animals have incited as much controversy as the use of animals in biomedical research. The political exchanges over this issue tend to produce much more heat than light, as representatives of both biomedicine and the animal protection community accuse opponents of being and the like. However, a healthy number of individuals within these two communities offer the possibility of a more illuminating discussion of the ethics of animal research.

Pediatric health care workers often perform, promote, and advocate use of public funds for animal research . We aim to determine whether HCW consider common arguments in support of AR convincing.

BackgroundTo determine whether the public and scientists consider common arguments in support of animal research convincing.MethodsAfter validation, the survey was sent to samples of public, Amazon Mechanical Turk, a Canadian city festival and children’s hospital), medical students, and scientists. We presented questions about common arguments to justify the moral permissibility of AR. Responses were compared using Chi-square with Bonferonni correction.ResultsThere were 1220 public [SSI, n = 586; AMT, n = 439; Festival, n = 195; Hospital n = 107], (...) 194/331 medical student, and 19/319 scientist [too few to report] responses. Most public respondents were <45 years, had some College/University education, and had never done AR. Most public and medical student respondents considered ‘benefits arguments’ sufficient to justify AR; however, most acknowledged that counterarguments suggesting alternative research methods may be available, or that it is unclear why the same ‘benefits arguments’ do not apply to using humans in research, significantly weakened ‘benefits arguments’. Almost all were not convinced of the moral permissibility of AR by ‘characteristics of non-human-animals arguments’, including that non-human-animals are not sentient, or are property. Most were not convinced of the moral permissibility of AR by ‘human exceptionalism’ arguments, including that humans have more advanced mental abilities, are of a special ‘kind’, can enter social contracts, or face a ‘lifeboat situation’. Counterarguments explained much of this, including that not all humans have these more advanced abilities [‘argument from species overlap’], and that the notion of ‘kind’ is arbitrary [e.g., why are we not of the ‘kind’ ‘sentient-animal’ or ‘subject-of-a-life’?]. Medical students were more supportive of AR at the end of the survey.ConclusionsResponses suggest that support for AR may not be based on cogent philosophical rationales, and more open debate is warranted. (shrink)

Research ethics is a core component of undergraduate psychology curricula, typically first encountered in introductory textbooks. Previous analyses of introductory textbooks focused on human research ethics. Given growing concerns about animal research—particularly among college students—we analyzed discussions of animal research ethics in 18 introductory psychology textbooks. Our results revealed that while most textbooks address this topic, defenses of animal use and mentions of oversight account for a majority of content, while (...) discussions of ethics were lacking. We discuss implications of these results and suggest improvements for engaging students to think critically about animal research ethics. (shrink)

This volume presents a framework of general principles for animal research ethics together with an analysis of the principles' meaning and moral requirements. Tom L. Beauchamp and David DeGrazia's comprehensive framework addresses ethical requirements pertaining to societal benefit and features a thorough, ethically defensible program of animal welfare. The book also features commentaries on the framework of principles by eminent figures in animal research ethics from an array of relevant disciplines: veterinary medicine, biomedical (...) research, biology, zoology, comparative psychology, primatology, law, and bioethics. (shrink)

Committees established for the ethical review of research involving animals have become a widespread legal standard around the world. Despite many differences in their composition, powers, and institutional settings, they share many common problems related to the well-established standards of procedural justice in administrative practice. The paper adapts the general theory of procedural justice to the specific context of ethical review committees. From this perspective, the main concerns over the procedural aspects of the ethical evaluation of research projects (...) are identified and examined. They include in particular the standards of the committees’ composition, impartiality, fair hearing, appeal, transparency, and benevolence. Their proper reflection in the regulatory regimes of animal ethics committees is necessary to secure the standards of fairness of the ethical review itself. This, in turn, is a condition of the moral and social legitimacy of all administrative and quasi-administrative procedures, including the committees’ operations. (shrink)

The ethics of using nonhuman animals in biomedical research is usually seen as a subfield of animal ethics. In recent years, however, the ethics of animal research has increasingly become a subfield within research ethics under the term “animal research ethics”. Consequently, ethical issues have become prominent that are familiar in the context of human research ethics, such as autonomy or self-determination, harms and benefits, justice, and (...) vulnerability. After a brief overview of the development of the field and a discussion of relevant theoretical ethical frameworks, I consider two of these issues, namely autonomy and self-determination on the one hand, and harms and benefits on the other hand. My concern is with philosophical and ethical issues, rather than animal research oversight. I focus my discussion on nonhuman primates, as the most plausible nonhuman candidates for this approach. I conclude that the approach, although promising, depends strongly on the moral status of nonhuman research subjects. (shrink)

One hundred sixty subjects acted as members of a hypothetical Institutional Animal Care and Use Committee and evaluated five proposals in which animals were to be used for research or educational purposes. They were asked to approve or reject the proposals and to indicate what factors were important in reaching their ethical decisions. Gender and differences in personal moral philosophy were related to approval decisions. The reasons given for the decisions fell into three main categories: metacognitive statements, factors (...) related to the animal, and factors related to the design of the experiment. (shrink)

The use of experimental animals, mostly rodents, in biomedical research and especially in oncology and immunology should be acknowledged with respect, recognizing the contribution of animal experimentation in the fascinating scientific progress in these disciplines of research. It is an obligation of the investigator to justify the scientific and ethical aspects of each study requiring the use of animals. The international guiding principles for using animals in biomedical research are well defined and have been distributed worldwide (...) by the International Council for Laboratory Animal Science (ICLAS) since 1956, when this Organization was founded. In Poland the ICLAS philosophy and principles are highly respected and were implemented firstly by the members of the Commission on Biology of Experimental Animals appointed in 1962 by the Department of Medical Science of the Polish Academy of Science in Warsaw. Animal Protection Acts, first proclaimed in 1928 were gradually modified and improved. Actual legislation (enacted in 1997, 2003 and 2005) is consistent with EU Directives (86/609/EEC) and follows the internationally recommended principles that include ICLAS guidelines concerning animal welfare and care condition in biomedical research. The problem of “alternative methods” is briefly discussed. Dr. Donald Boisvert, CCAC — Canadian Council on Animal Care. (shrink)

In Principles of Animal Research Ethics, Tom Beauchamp and David DeGrazia (hereafter B&D) aim to replace the well-known “3Rs”—Replacing animal research with non-animal methods, Reducing the numbers of animals, and Refining experiments to reduce harms and improve welfare—as the guiding principles regulating animal research. . . B&D present their principles as “useful” for people engaged in animal research and as a “philosophically sound” (p. 4) framework for a new ethic for (...) animal research. Regrettably, I have doubts about both these overall claims and so am pessimistic about the book. (shrink)

The history of the regulation of animal research is essentially the history of the emergence of meaningful social ethics for animals in society. Initially, animal ethics concerned itself solely with cruelty, but this was seen as inadequate to late 20th-century concerns about animal use. The new social ethic for animals was quite different, and its conceptual bases are explored in this paper. The Animal Welfare Act of 1966 represented a very minimal and in (...) many ways incoherent attempt to regulate animal research, and is far from morally adequate. The 1985 amendments did much to render coherent the ethic for laboratory animals, but these standards were still inadequate in many ways, as enumerated here. The philosophy underlying these laws is explained, their main provisions are explored, and future directions that could move the ethic forward and further rationalize the laws are sketched. (shrink)

Research ethics -- The ethical perspective -- The 3rs and good scientific practice -- Applying ethical thinking and social relevance -- Regulation and legislation : overview and background -- Public involvement : how and why? -- The future of animal research : guesstimates on technical and ethical developments -- New refine.

The significance of animals in research cannot be over-emphasized. The use of animals for research and training in research centres, hospitals and schools is progressively increasing. Advances in biotechnology to improve animal productivity require animal research. Drugs being developed and new interventions or therapies being invented for cure and palliation of all sorts of animal diseases and conditions need to be tested in animals for their safety and efficacy at some stages of their (...) development. Drugs and interventions for human use pass through a similar development process and must be tested pre-clinically in laboratory animals before clinical trials in humans can be conducted. Therefore, animals are important players in research processes which directly and indirectly benefit animals and humans. However, questions remain as to whether these uses of animals consider the best interests of animals themselves. Various research and training institutions in Tanzania have established some guidelines on animal use, including establishing animal ethics committees. However, most institutions have not established oversight committees. In institutions where there may be guidelines and policies, there are no responsible committees or units to directly oversee if and how these guidelines and policies are enforced; thus, implementation becomes difficult or impossible. This paper endeavours to raise some issues associated with the responsible use of animals in research and training in Tanzania and highlights suggestions for improvement of deficiencies that exist in order to bridge the gap between what ought to be practised and what is practised. (shrink)

The debate on animal research has entered a new phase, involving a reevaluation of the moral status of animals, a detailed examination of the biological and philosophical meaning of animal pain and suffering, and a closer examination of the benefits of different types of knowledge. We need a clearer understanding of the ethical issues in animal research to provide the groundwork for public policy.

The past one hundred fifty years of debate over the use of animals in research and testing has been characterized mainly byad hominem attacks and on uncritical rejection of the other sides’ arguments. In the classroom, it is important to avoid repeating exercises in public relations and to demand sound scholarship.

Alongside in vitro studies, researchers are increasingly exploring the transplantation of human brain organoids (HBOs) into non-human animals to study brain development, disease, and repair. This paper focuses on ethical issues raised by such transplantation studies. In particular, it investigates the possibility that they might yield enhanced brain function in recipient animals (especially non-human primates), thereby fundamentally altering their moral status. I assess the critique, raised by major voices in the bioethics and science communities, according to which such concerns are (...) premature and misleading. I identify the assumptions underlying this skeptical critique, and mention some objections against them, followed by some possible replies. I proceed to argue that the skeptical position is ultimately implausible, because it presupposes an unreasonably high standard of full moral status. My argument appeals to David DeGrazia’s idea of a “borderline person”, and to the need for consistency with existing animal research regulations. I outline the practical implications of my view for the conduct of studies that might result in the development of full moral status in a transplanted animal. I also discuss some of the ethical implications of animal enhancement (particularly of rodents) below the threshold associated with full moral status. I conclude that far from being premature, further debate on these issues is urgently needed to help clarify the prospects that a neural chimera might attain full moral status in the foreseeable future, and the level of quality of life required to make it acceptable to knowingly create such a being via HBO transplantation. (shrink)

To determine whether ethical issues concerned with field research are addressed in the peer-review process, instructions to authors and reviewers of 141 (mainly natural science) journals were examined to ascertain how often ethical issues were mentioned. Only one-third (n=41) of responding journals addressed ethical issues in their instructions to authors or reviewers. When ethical issues were considered, most of the journals limited their concerns to ethical issues associated with animal and general human experimentation. No journal mentioned ethical practices (...) in working with indigenous peoples or on traditional lands. Only two journals addressed the ethics of research in sensitive areas in their instructions to authors, only one in its instructions to reviewers. We suggest that peer-reviewed journals respond to an emerging issue in ecological research by formally incorporating research ethics into their instructions to authors and reviewers. Furthermore, these instructions should address the ethical issues associated with field research and in working with indigenous peoples and on traditional lands. (shrink)

Values in Bioethics (ViB), co-sponsored by the International Association of Bioethics, makes available original philosophical books in all areas of bioethics, including medical and nursing ethics, health care ethics, research ethics, environmental ethics, and global bioethics. --.

Health care workers often perform, promote, and advocate use of public funds for animal research ; therefore, an awareness of the empirical costs and benefits of animal research is an important issue for HCW. We aim to determine what health-care-workers consider should be acceptable standards of AR methodology and translation rate to humans.

The aim of this essay is to identify the significance of animal research and its benefits in cognitive neuroscience research. This essay will evaluate the advantages of conducting research using animal models, its history, and the ethical issues surrounding this technique. It will further evaluate how the research has contributed to improve our knowledge of human brain functioning.

Standards for farm animal welfare are variously managed at a national level by government-led regulatory control, by consumer-led welfare economics and co-regulated control in a partnership between industry and government. In the latter case the control of research to support animal welfare standards by the relevant industry body may lead to a conflict of interest on the part of researchers, who are dependent on industry for continued research funding. We examine this dilemma by reviewing two case (...) studies of research published under an Australian co-regulated control system. Evidence of unsupported conclusions that are favourable to industry is provided, suggesting that researchers do experience a conflict of interest that may influence the integrity of the research. Alternative models for the management of research are discussed, including the establishment of an independent research management body for animal welfare because of its public good status and the use of public money derived from taxation, with representation from government, industry, consumers, and advocacy groups. (shrink)

In the relatively short time since 2006—when Theoretical Medicine and Bioethics published an issue on moral issues relevant to the use of nonhuman animals in research [1]—significant changes have occurred for nonhuman animals in many quarters. Public sentiment, new policy initiatives, and scientific studies of nonhuman animals’ capacities have all influenced the ways in which nonhuman animals are perceived and treated in research. Today, a large body of information is available for use in decision making about the acceptability (...) of using nonhuman animals in research. The articles in this issue assess how moral argument and empirical studies stand to guide animal research policies and practices in future years.Many in bioethics have come to regard issues of animal research as a subfield of research ethics, bringing it closer to human research ethics. Animal ethics, like public health ethics, has struggled for recognition in bioethics. As the contributions to this issue show, some in bioe. (shrink)

A common assumption in the selection of nonhuman animal subjects for research and the approval of research is that, if the risks of a procedure are too great for humans, and if there is a so-called scientific necessity, then it is permissible to use nonhuman animal subjects. I reject the common assumption as neglecting the central ethical issue of the permissibility of using nonhuman animal subjects and as being inconsistent with the principle of justice used (...) in human subjects research ethics. This principle requires that certain classes of individuals not be subjected to a disproportionate share of the burdens or risks of research. I argue for an extension of this principle to nonhuman animal research and show that a prima facie violation of the principle occurs because nonhuman animals bear an overwhelmingly disproportionate share of the risks of research without sufficient justification or reciprocal benefit. (shrink)

The Institutional Animal Care and Use Committee is entrusted with assessing the ethics of proposed projects prior to approval of animal research. The role of the IACUC is detailed in legislation and binding rules, which are in turn inspired by the Three Rs: the principles of Replacement, Reduction, and Refinement. However, these principles are poorly defined. Although this provides the IACUC leeway in assessing a proposed project, it also affords little guidance. Our goal is to provide (...) procedural and philosophical clarity to the IACUC without mandating a particular outcome. To do this, we analyze the underlying logic of the Three Rs and conclude that the Three Rs accord animals moral standing, though not necessarily “rights” in the philosophical sense. We suggest that the Rs are hierarchical, such that Replacement, which can totally eliminate harm, should be considered prior to Reduction, which decreases the number of animals harmed, with Refinement being considered last. We also identify the need for a hitherto implicit fourth R: Reject, which allows the IACUC to refuse permission for a project which does not promise sufficient benefit to offset the pain and distress likely to be caused by the proposed research. (shrink)

The past one hundred fifty years of debate over the use of animals in research and testing has been characterized mainly byad hominem attacks and on uncritical rejection of the other sides’ arguments. In the classroom, it is important to avoid repeating exercises in public relations and to demand sound scholarship.

Animal ethics committees typically focus on the welfare of animals used in experiments, neglecting the potential welfare impact of that animal use on the animal laboratory personnel. Some of this work, particularly the killing of animals, can impose significant psychological burdens that can diminish the well-being of laboratory animal personnel, as well as their capacity to care for animals. We propose that AECs, which regulate animal research in part on the basis of reducing (...) harm, can and ought to require that these harms to researchers are reduced as well. The paper starts by presenting evidence of these burdens and their harm, giving some examples showing how they may be mitigated. We then argue that AECs are well placed to account for these harms to personnel and ought to use their power to reduce their occurrence. We conclude by responding to four potential objections: that this problem should be addressed through health and safety administration, not research ethics administration; that the proposal is unjustifiably paternalistic; that these harms to laboratory animal personnel ought to occur, given their treatment of animals; and that mitigating them may lead to worse treatment of research animals. (shrink)

The purpose of this article is to show that animal rights are not necessarily at odds with the use of animals for research. If animals hold basic moral rights similar to those of humans, then we should consequently extend the ethical requirements guiding research with humans to research with animals. The article spells out how this can be done in practice by applying the seven requirements for ethical research with humans proposed by Ezekiel Emanuel, David (...) Wendler and Christine Grady to animal research. These requirements are i) social value, ii) scientific validity, iii) independent review, iv) fair subject selection, v) favorable risk-benefit ratio, vi) informed consent, and vii) respect for research subjects. In practice, this means that we must reform the practice of animal research to make it more similar to research with humans, rather than completely abolish the former. Indeed, if we banned animal research altogether, then we would also deprive animals of its potential benefits – which would be ethically problematic. (shrink)

In recent decades, the demand for ethically acceptable treatment of animals – especially in case of livestock animals – has increased significantly in western societies and can thus have a significant impact on the consumption of animal products. Therefore, it is of great importance to understand the influence and the mode of action of animal-ethical values. In consumer research, the consumer value-attitude system consisting of global values, domain-specific values and attitudes is essential in many studies. However, there (...) have been no attempts so far to operationalise domain-specific values in the context of human-animal relationship empirically. This means that an essential component for the analysis of animal product consumption behaviour is missing. Therefore, the present study includes animal ethics into the consumer value-attitude system as domain-specific values. The aim is, to analyse the influence of animal-ethical values on consumer behaviour concerning animal products. As a concrete example, the consumption of game meat is chosen in this study, because the consumption of game meat is often judged in a contradictory way in terms of animal welfare. This offers the possibility to cover the entire spectrum of societal animal-ethical values. The study is based on a virtually representative online survey with 523 German participants. A structural equation model is used for analysis. It was found, that animal ethics can be perfectly integrated into the value system as domain-specific values. Furthermore, the results show that especially the two extreme positions in animal ethics, original anthropocentrism and abolitionism, have a significant influence on consumer behaviour – in this case on the consumption of game meat. Overall, this first study on domain-specific values in the context of human-animal relationship contributes to a deeper understanding of which animal-ethical values affect the behaviour of consumers. This is of great importance for marketing and consumer theory concerning animal products. (shrink)

For animal research, the precautionary principle was written into public policy through the so-called three R’s of replacement, reduction, and refinement. These guidelines, as developed by Russell and Burch six decades ago, aimed to establish safeguards against the abuse of animals in the pursuit of science. While these safeguards, which started from the basic premise that science itself would benefit from a reduction of animal suffering, seem compelling at first, the three R’s have in practice generated a (...) degree of confusion while opening up loopholes that have enabled researchers to effectively dismiss some of the more inconvenient aspects of ethical concerns. Such problems have been discussed in detail by multiple authors. Here, we suggest a different approach by arguing that a clear parallel can be drawn between the shortcomings evident in the current three R’s model and the flawed practice of early modern judicial torture, in which a set of elaborate safeguards that were designed to prevent abuses served instead to create the same combination of confusion and easily exploited loopholes. In the case of judicial torture, attempts to refine the system from within produced limited results, and effective change only took place when individual legal systems succeeded in enforcing clear absolutes. We explore the implications of this for the regulation of animal research by pointing to the need for achievable absolutes, based on a clear, evidence-based, and publicly deliberated rationale, in order to facilitate and improve research ethics. (shrink)

Even to begin discussing the ethics of animal experimentation we must locate our place in the “ethical three‐ring circus” of the debate among “human welfarists,” “animal rightists” and those in the “troubled middle.” A philosophy of “nature alive,” recognizing that some animals are more equal than others, can inform the troubled middle and ethically justify judicious animal research.

. . Tom Beauchamp and David DeGrazia's principles do improve upon the 3Rs which don’t mention the need for benefits from animal experimentation, the need to compare these benefits to animal harms, and provide no hard limits on experimentation. -/- However, they present their principles as “useful” for people engaged in animal research and as a “philosophically sound” (p. 4) framework for a new ethic for animal research. Regrettably, I have doubts about both these (...) overall claims and so am pessimistic about the book. (shrink)

The use of legislative and other controls on animal research to meet public expectations and improve animal welfare -- Animal rights and animal welfare : philosophy and science -- Species choice and animal welfare -- The harm/benefit judgement -- Improving the welfare of animals used in research : the 3Rs -- Science and animal welfare : a partnership.

We argue that the ecological research community should develop a plan for improving the ethical consistency and moral robustness of the field. We propose a particular ethics strategy—specifically, an ongoing process of collective ethical reflection that the community of ecological researchers, with the cooperation of applied ethicists and philosophers of biology, can use to address the needs we identify. We suggest a particular set of conceptual and analytic tools that, we argue, collectively have the resources to provide an (...) empirically grounded and conceptually complete foundation for an ethics strategy for ecological research. We illustrate our argument with information gathered from a survey of ecologists conducted at the 2013 meeting of the Canadian Society of Ecology and Evolution. (shrink)

Animals are used in biomedical research to study disease, develop new medicines, and test them for safety. As the Oxford Centre for Animal Ethics’ review Normalising the Unthinkable acknowledges, many great strides in medicine have involved animals. However, their contribution has not always been positive. Decades of attempts to develop treatments for diseases including asthma, cancer, stroke, and Alzheimer’s using animals have failed to translate to humans, leaving patients with inadequate treatments or without treatments at all. As (...) Normalising the Unthinkable points out, we have to confront the fact that animal research may have hindered progress, at least in some respects. For example, animal tests have been shown to have very little ability to predict the safety of medicines for human patients. A dramatic illustration of this failing is TGN1412, which almost killed 6 clinical trial volunteers in 2006, after crab-eating macaques showed the drug to be safe, even at massive doses. This failing contributes to adverse drug reactions, which are now one of the world’s leading causes of death, killing hundreds of thousands of people every year and hospitalizing millions. A revolution in science and technology has produced a new generation of more relevant and predictive tools, which could be used to create safer medicines more quickly and at less cost: a win-win situation that should be supported by everyone. The obstacle preventing this from happening is governments’ continued insistence on animal testing. Yet the evidence is clear that reliance on animals as surrogate humans puts patients at risk, can delay medical progress, and can cause effective treatments to be wrongly discarded. There is a compelling case to be made that animal research is an ethical issue for humans as well as for animals. (shrink)

In this paper, we outline how one might conduct a comprehensive ethical evaluation of human brain organoid transplantation in animals. Thus far, ethical concerns regarding this type of research have been assumed to be similar to those associated with other transplants of human cells in animals, and have therefore not received significant attention. The focus has been only on the welfare, moral status, or mental capacities of the host animal. However, the transplantation of human brain organoids introduces several (...) new ethical issues. Many of these are related to uncertainty regarding whether or not brain organoids might be conscious. While these concerns might not be immediately relevant, they warrant closer scrutiny. We discuss how various ethical issues are relevant to different stages of human brain organoid transplantation and can guide the ethical evaluation of research. Our examination would broaden the horizons of the debate on the transplantation of brain organoids. (shrink)

Animal ethics committees (AECs) appeal to utilitarian principles in their justification of animal experiments. Although AECs do not grant rights to animals, they do accept that animals have moral standing and should not be unnecessarily harmed. Although many appeal to utilitarian arguments in the justification of animal experiments, I argue that AECs routinely fall short of the requirements needed for such justification in a variety of ways. I argue that taking the moral status of animals seriously—even (...) if this falls short of granting rights to animals—should lead to a thorough revision or complete elimination of many of the current practices in animal experimentation. (shrink)

The articles collected in this special issue were originally presented at two workshops entitled "Ethical Issues of Animal Research" sponsored by Georgetown University's Kennedy Institute of Ethics and Indiana University's Poynter Center for the Study of Ethics and American Institution. Some of the most prominent and influential thinkers in the field present their diverse views.

Research that involves the creation of animals with human-derived parts opens the door to potentially valuable scientific and therapeutic advances, yet invokes unsettling moral questions. Critics and champions alike stand to gain from clear identification and careful consideration of the strongest ethical objections to this research. A prevailing objection argues that crossing the human/nonhuman species boundary introduces inexorable moral confusion (IMC) that warrants a restriction to this research on precautionary grounds. Though this objection may capture the intuitions (...) of many who find this research unsettling, it relies on mistaken views of both biology and moral standing, ultimately distorting the morally relevant facts. We critically examine IMC, identify mistaken essentialist assumptions, and reframe ethical concerns. The upshot is a stronger line of objection that encourages a more inclusive and productive ethical discourse. (shrink)

Intrinsic value and animal integrity are two key concepts in the debate on the ethics of the genetic engineering of laboratory animals. These concepts have, on the one hand, a theoretical origin and are, on the other hand, based on the moral beliefs of people not directly involved in the genetic modification of animals. This ‘external’ origin raises the question whether these concepts need to be adjusted or extended when confronted with the moral experiences and opinions of people (...) directly involved in the creation or use of transgenic laboratory animals. To answer this question, 35 persons from the practice of biomedical research who are directly involved in genetic engineering (scientists, biotechnicians, animal caretakers and laboratory animal scientists) were interviewed. They were asked to give their moral opinion on different aspects of the genetic engineering of animals and to react to statements about the concepts of intrinsic value and animal integrity. Analysis of the interviews showed that, contrary to what is often assumed, the respondents embraced these concepts, even those senses that (more) specifically apply to genetic engineering. And although the respondents raised some objections that go beyond issues of animal welfare, these objections could quite well be expressed in terms of the concepts of intrinsic value and animal integrity. In short, the results of the present study strongly suggest that these concepts do not have to be adjusted or extended in the light of the moral experiences and opinions from practice. (shrink)