Ways of knowing the health of livestock populations: the age of surveys, 1928-65.

This article advances historical understandings of health, veterinary medicine and livestock agriculture by examining how, in mid-twentieth-century Britain, the diseases of livestock were made collectively knowable. During this period, the state extended its gaze beyond a few, highly impactful notifiable diseases to a host of other threats to livestock health. The prime mechanism through which this was achieved was the disease survey. Paralleling wider developments in survey practices, it grew from small interwar beginnings into a hugely expensive, wide-ranging state veterinary project that created a new conception of the nation's livestock as a geographical aggregation of animals in varying states of health. This article traces the disease survey's entanglements with dairy cows, farming practices, veterinary professional politics and government agendas. It shows that far from a neutral reflection of reality, surveys both represented and perpetuated specific versions of dairy cow health, varieties of farming practice and visions of the veterinary professional role. At first, their findings proved influential, but over time they found it harder to discipline their increasingly complex human, animal and disease subjects, resulting in unconvincing representations of reality that led ultimately to their marginalization.

Writing the History of Endemic Viral Disease: The Case of Bovine Viral Diarrhoea, c.1945-1980.

In Western countries during the post-World War II decades, endemic viral diseases were increasingly important to health. Such diseases have attracted limited historical attention. Due to changing methods of livestock production, they were particularly prevalent on the farm. This article uses a case study of the cattle disease, bovine viral diarrhoea (BVD), to demonstrate their historical significance. Spanning North America, the UK and Australia, it reveals the complex nature of BVD, and how and why its clinical, aetiological, epidemiological and host species identities evolved over time. This analysis sheds new light on how endemic viral diseases of livestock were experienced, understood and distributed in this period, and the influence exerted by changing agricultural practices, concerns about biological warfare and the development of virology as applied to veterinary medicine.

Introduction to "Working Across Species".

Comparison between different animal species is omnipresent in the history of science and medicine but rarely subject to focussed historical analysis. The articles in the "Working Across Species" topical collection address this deficit by looking directly at the practical and epistemic work of cross-species comparison. Drawn from papers presented at a Wellcome-Trust-funded workshop in 2016, these papers investigate various ways that comparison has been made persuasive and successful, in multiple locations, by diverse disciplines, over the course of two centuries. They explore the many different animal features that have been considered to be (or else made) comparable, and the ways that animals have shaped science and medicine through the use of comparison. Authors demonstrate that comparison between species often transcended the range of practices typically employed with experimental animal models, where standardised practises and apparatus were applied to standardised bodies to produce generalizable, objective data; instead, comparison across species has often engaged diverse groups of non-standard species, made use of subjective inferences about phenomena that cannot be directly observed, and inspired analogies that linked physiological and behavioural characteristics with the apparent affective state of non-human animals. Moreover, such comparative practices have also provided unusually fruitful opportunities for collaborative connections between different research traditions and disciplines.

From One Medicine to Two: The Evolving Relationship between Human and Veterinary Medicine in England, 1791-1835.

This article offers a novel perspective on the evolving identities and relationships of human medicine and veterinary medicine in England during the decades that followed the 1791 foundation of the London Veterinary College. Contrary to the impressions conveyed by both medical and veterinary historians, it reveals that veterinary medicine, as initially defined, taught and studied at the college, was not a domain apart from human medicine but rather was continuous with it. It then shows how this social, cultural, and epistemological continuity fractured over the period 1815 to 1835. Under the impetus of a movement for medical reform, veterinarians began to advance an alternative vision of their field as an autonomous, independent domain. They developed their own societies and journals and a uniquely veterinary epistemology that was rooted in the experiences of veterinary practice. In this way, "one medicine" became "two," and the professions began to assume their modern forms and relations.

Animal roles and traces in the history of medicine, c.1880-1980.

This paper argues for the need to create a more animal-centred history of medicine, in which animals are considered not simply as the backdrop for human history, but as medical subjects important in and of themselves. Drawing on the tools and approaches of animal and human-animal studies, it seeks to demonstrate, via four short historical vignettes, how investigations into the ways that animals shaped and were shaped by medicine enables us to reach new historical understandings of both animals and medicine, and of the relationships between them. This is achieved by turning away from the much-studied fields of experimental medicine and public health, to address four historically neglected contexts in which diseased animals played important roles: zoology/pathology, parasitology/epidemiology, ethology/psychiatry, and wildlife/veterinary medicine. Focusing, in turn, on species that rarely feature in the history of medicine - big cats, tapeworms, marsupials and mustelids - which were studied, respectively, within the zoo, the psychiatric hospital, human-animal communities and the countryside, we reconstruct the histories of these animals using the traces that they left on the medical-historical record.

One health, many histories.

In another of Veterinary Record's series of articles on One Health, Abigail Woods and Michael Bresalier discuss the complex history of veterinary-medical collaboration and highlight the social, political and institutional factors that have contributed towards shaping the One Health model.

Recapturing the history of surgical practice through simulation-based re-enactment.

This paper introduces simulation-based re-enactment (SBR) as a novel method of documenting and studying the recent history of surgical practice. SBR aims to capture ways of surgical working that remain within living memory but have been superseded due to technical advances and changes in working patterns. Inspired by broader efforts in historical re-enactment and the use of simulation within surgical education, SBR seeks to overcome some of the weaknesses associated with text-based, surgeon-centred approaches to the history of surgery. The paper describes how we applied SBR to a previously common operation that is now rarely performed due to the introduction of keyhole surgery: open cholecystectomy or removal of the gall bladder. Key aspects of a 1980s operating theatre were recreated, and retired surgical teams (comprising surgeon, anaesthetist and theatre nurse) invited to re-enact, and educate surgical trainees in this procedure. Video recording, supplemented by pre- and post-re-enactment interviews, enabled the teams' conduct of this operation to be placed on the historical record. These recordings were then used to derive insights into the social and technical nature of surgical expertise, its distribution throughout the surgical team, and the members' tacit and frequently sub-conscious ways of working. While acknowledging some of the limitations of SBR, we argue that its utility to historians - as well as surgeons - merits its more extensive application.

Understanding and managing zoonotic risk in the new livestock industries.

BACKGROUND: In many parts of the world, livestock production is undergoing a process of rapid intensification. The health implications of this development are uncertain. Intensification creates cheaper products, allowing more people to access animal-based foods. However, some practices associated with intensification may contribute to zoonotic disease emergence and spread: for example, the sustained use of antibiotics, concentration of animals in confined units, and long distances and frequent movement of livestock. OBJECTIVES: Here we present the diverse range of ecological, biological, and socioeconomic factors likely to enhance or reduce zoonotic risk, and identify ways in which a comprehensive risk analysis may be conducted by using an interdisciplinary approach. We also offer a conceptual framework to guide systematic research on this problem. DISCUSSION: We recommend that interdisciplinary work on zoonotic risk should take into account the complexity of risk environments, rather than limiting studies to simple linear causal relations between risk drivers and disease emergence and/or spread. In addition, interdisciplinary integration is needed at different levels of analysis, from the study of risk environments to the identification of policy options for risk management. CONCLUSION: Given rapid changes in livestock production systems and their potential health implications at the local and global level, the problem we analyze here is of great importance for environmental health and development. Although we offer a systematic interdisciplinary approach to understand and address these implications, we recognize that further research is needed to clarify methodological and practical questions arising from the integration of the natural and social sciences.

Rethinking the history of modern agriculture: British pig production, c.1910-65.

This article uses a study of pig production in Britain, c.1910-65, to rethink the history of modern agriculture and its implications for human-animal relationships. Drawing on literature written by and for pig producers and experts, it challenges existing portrayals of a unidirectional, post-Second World War shift from traditional small-scale mixed farming to large, specialized, intensive systems. Rather, 'factory-style' pig production was already established in Britain by the 1930s, and its fortunes waxed and waned over time in relation to different kinds of outdoor production, which was still prominent in the mid-1960s. In revealing that the progressive proponents of both indoor and outdoor methods regarded them as modern and efficient, but defined and pursued these values in quite different ways, the article argues for a more historically situated understanding of agricultural modernity. Analysis reveals that regardless of their preferred production system, leading experts and producers were keen to develop what they considered to be natural methods that reflected the pig's natural needs and desires. They perceived pigs as active, sentient individuals, and believed that working in harmony with their natures was essential, even if this was, ultimately, for commercial ends. Such views contradict received accounts of modern farming as a utilitarian enterprise, concerned only with dominating and manipulating nature. They are used to argue that a romantic, moral view of the pig did not simply pre-date or emerge in opposition to modern agriculture, but, rather, was integral to it.

From cruelty to welfare: the emergence of farm animal welfare in Britain, 1964-71.

There is a long history of concern in Britain for how animals are treated. Until the 1960s, these concerns were expressed largely in terms of cruelty or suffering, which was prevented through various acts of Parliament. Over the period 1964-71, amidst public debates about intensive farming, a new discourse of animal welfare emerged. To understand what welfare meant and how it became established as a term, a concept and a target of government regulation, it is necessary to examine farming politics and practices, the existing tradition of animal protection and attempts to rethink the nature of animal suffering.

A historical synopsis of farm animal disease and public policy in twentieth century Britain.

The diseases suffered by British livestock, and the ways in which they were perceived and managed by farmers, vets and the state, changed considerably over the course of the twentieth century. This paper documents and analyses these changes in relation to the development of public policy. It reveals that scientific knowledge and disease demographics cannot by themselves explain the shifting boundaries of state responsibility for animal health, the diseases targeted and the preferred modes of intervention. Policies were shaped also by concerns over food security and the public's health, the state of the national and livestock economy, the interests and expertise of the veterinary profession, and prevailing agricultural policy. This paper demonstrates how, by precipitating changes to farming and trading practices, public policy could sometimes actually undermine farm animal health. Animal disease can therefore be viewed both as a stimulus to, and a consequence of, twentieth century public policy.

The farm as clinic: veterinary expertise and the transformation of dairy farming, 1930-1950.

This paper explores the wartime creation of veterinary expertise in cattle breeding, and its contribution to the transition between two very different types of agriculture. During the interwar period, falling prices and steep competition from imports caused farmers to adopt a 'low input, low output' approach. To cut costs, they usually butchered, marketed or doctored diseased cows in preference to seeking veterinary aid. World War II forced a greater dependence on domestic food production, and inspired wide-ranging state-directed attempts to increase agricultural output. However, the weak connection between veterinary services and livestock productivity meant that the drive for greater milk yields did not automatically translate into a demand for improved veterinary health care. Rather veterinary expertise had to be actively created and made relevant to the new context. Leaders of the profession secured this goal through establishing a government-backed 'scheme for the control of certain diseases of dairy cows'. Drawing on pre-existing but rarely applied reproductive technologies, the scheme provided the opportunities and education necessary for more extensive veterinary interventions in cattle breeding. I show how its operation transformed understandings of fertility, raised veterinarians to the status of experts, won them the patronage of farmers and the state, and facilitated the shift to a productivity-oriented agriculture.